CBRegistry Component

Properties   Methods   Events   Config Settings   Errors  

The CBRegistry component allows applications to intercept and control registry requests.

Syntax

callback.CBFSFilter.Cbregistry

Remarks

The CBRegistry component gives applications the ability to intercept and registry requests, allowing them to be altered, handled, and blocked. Applications use standard filter rules to specify which requests they are interested in intercepting; and special filter rules to enforce access restrictions.

To learn more about the component's capabilities, please refer to the product's General Information topics.

Getting Started

  1. If the component's system driver has not been installed yet, call the Install method to do so. This needs to be done only once.
    • In production, the driver can be installed (or updated) ahead of time by the application's installation script using the Installer DLL. Please refer to the Driver Installation topic for more information.
  2. Call the Initialize method to initialize the CBRegistry component. This must be done each time the application starts.
  3. Add one or more filter rules using methods like AddFilterRule. (Rules also can be added or removed after the filter is started.)
  4. Call the StartFilter method to start filtering filesystem requests.
  5. When finished, call the StopFilter method to stop filtering filesystem requests.
  6. To uninstall the component's system driver, call the Uninstall method. This should not be done as part of the driver upgrade process.
    • In production, the driver can be uninstalled by the application's uninstallation script using the Installer DLL. Please refer to the Driver Installation topic for more information.

Property List


The following is the full list of the properties of the component with short descriptions. Click on the links for further details.

ActiveThis property notes whether the component is active and processing requests.
AltitudeThis property specifies the altitude the component's system driver should use.
DefaultRulesThis property includes a collection of default rules.
FilterRulesThis property includes a collection of filter rules.
PassthroughRulesThis properly includes a collection of passthrough rules.
SerializeEventsWhether events should be fired on a single worker thread, or many.
TagThis property stores application-defined data specific to a particular instance of the component.

Method List


The following is the full list of the methods of the component with short descriptions. Click on the links for further details.

AddDefaultRuleThis method adds a default rule.
AddFilteredProcessByIdThis method adds a process, by process ID (PID), to the list of filtered processes.
AddFilteredProcessByNameThis method adds a process, by name, to the list of filtered processes.
AddFilterRuleThis method adds a standard filter rule or access rule.
AddIgnoredProcessByIdThis method adds a process, by process Id (PID), to the list of ignored processes.
AddIgnoredProcessByNameThis method adds a process, by name, to the list of ignored processes.
AddPassthroughRuleThis method adds a passthrough rule.
CloseDefaultRulesSnapshotThis method closes the previously created default rules snapshot.
ConfigSets or retrieves a configuration setting.
CreateDefaultRulesSnapshotThis method creates a snapshot of information about the default rules that have been added.
DeleteAllFilterRulesThis method deletes all standard filter rules.
DeleteAllPassthroughRulesThis method deletes all passthrough rules.
DeleteDefaultRuleThis method deletes a particular default rule.
DeleteFilterRuleThis method deletes a particular standard filter rule or access rule.
DeletePassthroughRuleThis method deletes a particular passthrough rule.
GetDriverStatusThis method retrieves the status of the component's system driver.
GetDriverVersionThis method retrieves the version of the component's system driver.
GetOriginatorProcessIdThis method retrieves the process Id (PID) that initiated the operation.
GetOriginatorProcessNameThis method retrieves the name of the process that initiated the operation.
GetOriginatorThreadIdThis method retrieves the thread Id that initiated the operation.
GetOriginatorTokenThis method retrieves the security token associated with the process that initiated the operation.
InitializeThis method initializes the component.
InstallThis method installs (or upgrades) the component's system driver.
RemoveFilteredProcessByIdThis method removes a process, by process Id (PID), from the list of filtered processes.
RemoveFilteredProcessByNameThis method removes a process, by name, from the list of filtered processes.
RemoveIgnoredProcessByIdThis method removes a process, by process Id (PID), from the list of ignored processes.
RemoveIgnoredProcessByNameThis method removes a process, by name, from the list of ignored processes.
ResetTimeoutThis method resets the timeout duration for the current event handler.
ShutdownSystemShuts down or reboots the operating system.
StartFilterThis method starts filtering registry operations.
StopFilterThis method stops filtering registry operations.
SuspendDefaultRulesThis method suspends all default rules until the application exits.
ToggleProcessProtectionThis method enables or disables termination protection for the application.
UninstallThis method uninstalls the component's system driver.

Event List


The following is the full list of the events fired by the component with short descriptions. Click on the links for further details.

AfterCloseKeyThis event fires after a registry key is closed.
AfterCreateKeyThis event fires after a registry key is created.
AfterDeleteKeyThis event fires after a registry key is deleted.
AfterDeleteValueThis event fires after a registry value is deleted.
AfterEnumerateKeyThis event fires after a subkey's information is retrieved during key enumeration.
AfterEnumerateValueThis event fires after a registry value's information is retrieved during key value enumeration.
AfterGetKeySecurityThis event fires after a registry key's security attributes are changed.
AfterOpenKeyThis event fires after a registry key is opened.
AfterQueryKeyThis event fires after a registry key's information is retrieved.
AfterQueryValueThis event fires after a registry value's information is retrieved.
AfterRenameKeyThis event fires after a registry key is renamed.
AfterSetKeyThis event fires after a registry key's information is updated.
AfterSetKeySecurityThis event fires after a registry key's security attributes are changed.
AfterSetValueThis event fires after a registry value is set or updated.
BeforeCloseKeyThis event fires before a registry key is closed.
BeforeCreateKeyThis event fires before a registry key is created.
BeforeDeleteKeyThis event fires before a registry key is deleted.
BeforeDeleteValueThis event fires before a registry value is deleted.
BeforeEnumerateKeyThis event fires before a subkey's information is retrieved during key enumeration.
BeforeEnumerateValueThis event fires before a registry value's information is retrieved during key value enumeration.
BeforeGetKeySecurityThis event fires before a registry key's security attributes are retrieved.
BeforeOpenKeyThis event fires before a registry key is opened.
BeforeQueryKeyThis event fires before a registry key's information is retrieved.
BeforeQueryValueThis event fires before a registry value's information is retrieved.
BeforeRenameKeyThis event fires before a registry key is renamed.
BeforeSetKeyThis event fires before a registry key's information is updated.
BeforeSetKeySecurityThis event fires before a registry key's security attributes are changed.
BeforeSetValueThis event fires before a registry value is set or updated.
CleanupKeyContextThis event fires when the application-defined data stored in a registry key context need to be cleaned up.
CloseKeyHandleThis event fires when an application-provided registry key handle should be closed.
ErrorThis event fires if an unhandled error occurs during an event.
WorkerThreadCreationFires just after a new worker thread is created.
WorkerThreadTerminationFires just before a worker thread is terminated

Config Settings


The following is a list of config settings for the component with short descriptions. Click on the links for further details.

FilterOwnRequestsWhether the component's system driver should filter requests made by the application itself.
ForceAdminRightsForDefaultRulesSpecifies whether default rules can be added or deleted only by administrators.
ForceAppPermissionCheckWhether the driver should require the controller process to have elevated or system privileges.
ForceSecurityChecksWhether the driver should prevent the controller process from filtering files that it would not normally have access to.
LoggingEnabledWhether extended logging is enabled.
MaxWorkerThreadCountThe maximum number of worker threads to use to fire events.
MinWorkerThreadCountThe minimum number of worker threads to use to fire events.
ResolveNtNameToWin32NameWhether key names in NT native format are translated to common Win32 format.
WorkerInitialStackSizeThe initial stack size to create worker threads with.
BuildInfoInformation about the product's build.
LicenseInfoInformation about the current license.

Active Property (CBRegistry Component)

This property notes whether the component is active and processing requests.

Syntax

public bool Active { get; }
Public ReadOnly Property Active As Boolean

Default Value

False

Remarks

This property reflects whether the component is active and currently processing requests. It will be true after the filter has been attached successfully via a call to StartFilter.

This property is read-only and not available at design time.

Altitude Property (CBRegistry Component)

This property specifies the altitude the component's system driver should use.

Syntax

public string Altitude { get; set; }
Public Property Altitude As String

Default Value

"400055"

Remarks

This property specifies the altitude that the component's system driver should use. A driver's altitude determines its absolute position in the stack of filter drivers; drivers with higher altitudes are attached toward the top of the stack, closer to the user mode, which allows them to process requests earlier.

Registry filter drivers are not required to specify an altitude; and this property's default empty value is interpreted as "no altitude". However, registry filter drivers that do not specify an altitude will always be attached near the top of the filter driver stack, which may not be desirable. Please refer to the Driver Altitudes topic for more information.

DefaultRules Property (CBRegistry Component)

This property includes a collection of default rules.

Syntax

public RegDefaultRuleList DefaultRules { get; }
Public ReadOnly Property DefaultRules As RegDefaultRuleList

Remarks

This property holds a collection of RegDefaultRule objects, each of which represents a default rule. Please refer to the Default Rules topic for more information.

Use the following methods to manage default rules:

Note: Because default rules are managed by the component's system driver, this collection is not populated by default, nor is it updated by any of the aforementioned methods. Applications can call the CreateDefaultRulesSnapshot method to populate this collection; and must call the CloseDefaultRulesSnapshot method when finished working with it to release the associated memory.

Note: The methods and properties related to rule management are not intended to be used from multiple threads at once. Applications that wish to use said methods and properties from multiple threads are responsible for employing proper thread synchronization techniques to ensure that manipulation and enumeration of the rule lists occurs in a thread-safe manner.

This property is read-only and not available at design time.

Please refer to the RegDefaultRule type for a complete list of fields.

FilterRules Property (CBRegistry Component)

This property includes a collection of filter rules.

Syntax

public RegFilterRuleList FilterRules { get; }
Public ReadOnly Property FilterRules As RegFilterRuleList

Remarks

This property holds a collection of RegFilterRule objects, each of which represents a standard filter rule, access rule, or both. Please refer to the File and Registry Filter Rules and Access Rules topics for more information.

Use the following methods to manage the rules in this collection:

Note: The methods and properties related to rule management are not intended to be used from multiple threads at once. Applications that wish to use said methods and properties from multiple threads are responsible for employing proper thread synchronization techniques to ensure that manipulation and enumeration of the rule lists occurs in a thread-safe manner.

This property is read-only and not available at design time.

Please refer to the RegFilterRule type for a complete list of fields.

PassthroughRules Property (CBRegistry Component)

This properly includes a collection of passthrough rules.

Syntax

public RegPassthroughRuleList PassthroughRules { get; }
Public ReadOnly Property PassthroughRules As RegPassthroughRuleList

Remarks

This property holds a collection of RegPassthroughRule objects, each of which represents a passthrough rule. Please refer to the Passthrough Rules topic for more information.

Use the following methods to manage the rules in this collection:

Note: The methods and properties related to rule management are not intended to be used from multiple threads at once. Applications that wish to use said methods and properties from multiple threads are responsible for employing proper thread synchronization techniques to ensure that manipulation and enumeration of the rule lists occurs in a thread-safe manner.

This property is read-only and not available at design time.

Please refer to the RegPassthroughRule type for a complete list of fields.

SerializeEvents Property (CBRegistry Component)

Whether events should be fired on a single worker thread, or many.

Syntax

public CbregistrySerializeEvents SerializeEvents { get; set; }

enum CbregistrySerializeEvents { seOnMultipleThreads, seOnOneWorkerThread }
Public Property SerializeEvents As CbregistrySerializeEvents

Enum CbregistrySerializeEvents seOnMultipleThreads seOnOneWorkerThread End Enum

Default Value

0

Remarks

This property specifies whether the component should fire all events serially on a single worker thread, or concurrently on multiple worker threads. The possible values are:

0 (seOnMultipleThreads) The component fires events in the context of multiple worker threads. The MinWorkerThreadCount and MaxWorkerThreadCount configuration settings control how many worker threads are used for this.
1 (seOnOneWorkerThread) The component fires events in the context of one background worker thread.

Please refer to the Threading and Concurrency topic for more information.

Note: This property cannot be changed when Active is true, and it cannot be changed within events.

Tag Property (CBRegistry Component)

This property stores application-defined data specific to a particular instance of the component.

Syntax

public long Tag { get; set; }
Public Property Tag As Long

Default Value

0

Remarks

This property can be used to store data specific to a particular instance of the component.

AddDefaultRule Method (CBRegistry Component)

This method adds a default rule.

Syntax

public bool AddDefaultRule(string mask, int accessFlags, string productGUID);
Public Function AddDefaultRule(ByVal Mask As String, ByVal AccessFlags As Integer, ByVal ProductGUID As String) As Boolean

Remarks

This method adds a default rule for the registry keys that matches the specified Mask. Each rule in a ruleset is uniquely identified by its mask; if a rule with the specified mask already exists, the new rule's parameters are merged into it.

If the rule is added successfully, this method returns true; otherwise, it returns false.

Default rules, like access rules, instruct the component's system driver to apply certain access restrictions to matching registry keys. However, unlike access rules, default rules are managed by the driver directly; they are activated as soon as the driver loads at boot time, and then continue to be enforced at all times, regardless of whether or not the application that added them is open.

The Mask parameter must be a valid registry key mask according to the Registry Key Masks topic. Only the registry keys that match the specified mask will be covered by the rule.

The AccessFlags parameter specifies which access restrictions the component's system driver should apply to matching registry keys. The value passed for this parameter should be constructed by ORing together zero or more of the following flags:

ACCESS_NONE0x00No access restrictions.

ACCESS_READ_ONLY0x01Read-only access; writing and deleting are prohibited.

ACCESS_WRITE_ONLY0x02Write-only access; reading and deleting are prohibited.

ACCESS_DELETE_PROTECT0x04Deleting and renaming are prohibited.

ACCESS_EXECUTE_PROTECT0x08Execution is prohibited.

ACCESS_NO_CHANGE_DAC0x10Change of security attributes is prohibited.

ACCESS_NO_CHANGE_OWNER0x20Change of owner is prohibited.

ACCESS_RENAME_PROTECT0x40Renaming is prohibited.

ACCESS_DELETE_ONLY_PROTECT0x80Deleting is prohibited (renaming is not affected).

ACCESS_REMOTE_ACCESS_PROTECT0x100Access from other systems is prohibited.

ACCESS_DENY_ALL0x200All access is denied.

ACCESS_ALL_FLAGS-1Used to denote all currently set access restriction flags.

The ProductGUID parameter identifies the application that the rule should be associated with in the registry. In most cases, the value passed for this parameter should be the same one that was used to call the Initialize method.

This method requires administrative rights to execute successfully. If the user account of the process that calls this method doesn't have such rights, the call will fail with an ERROR_PRIVILEGE_NOT_HELD (0x0522) error. Please refer to the Default Rules topic for more information.

Note: The methods and properties related to rule management are not intended to be used from multiple threads at once. Applications that wish to use said methods and properties from multiple threads are responsible for employing proper thread synchronization techniques to ensure that manipulation and enumeration of the rule lists occurs in a thread-safe manner.

AddFilteredProcessById Method (CBRegistry Component)

This method adds a process, by process ID (PID), to the list of filtered processes.

Syntax

public void AddFilteredProcessById(int processId, bool includeChildren);
Public Sub AddFilteredProcessById(ByVal ProcessId As Integer, ByVal IncludeChildren As Boolean)

Remarks

This method adds the process with the specified ProcessId (PID) to the list of processes whose requests should be filtered (i.e., that the component should fire events for).

This method is provided for compatibility with CBFS Registry 2017. Use of the new AddFilterRule, DeleteFilterRule, and related methods is recommended instead.

The ProcessId parameter specifies the PID of the process whose requests should be filtered. The value passed for this parameter must either be the PID of an existing process; or -1, which means "all processes". When adding a PID-based rule, you need to be aware of the PID Reuse behavior of Windows.

The IncludeChildren parameter specifies whether requests made by the specified process's children should also be filtered.

Note: This method can be called only when Active is true.

AddFilteredProcessByName Method (CBRegistry Component)

This method adds a process, by name, to the list of filtered processes.

Syntax

public void AddFilteredProcessByName(string processName, bool includeChildren);
Public Sub AddFilteredProcessByName(ByVal ProcessName As String, ByVal IncludeChildren As Boolean)

Remarks

This method adds the process with the specified ProcessName to the list of processes whose requests should be filtered (i.e., that the component should fire events for).

This method is provided for compatibility with CBFS Registry 2017. Use of the new AddFilterRule, DeleteFilterRule, and related methods is recommended instead.

The ProcessName parameter must be a valid process executable name. It may optionally begin with a path, and both the name and the path (if present) may include wildcards (* and ?). A process with a matching executable name does not actually need to exist when this method is called.

The IncludeChildren parameter specifies whether requests made by the specified process's children should also be filtered.

Note: This method can be called only when Active is true.

AddFilterRule Method (CBRegistry Component)

This method adds a standard filter rule or access rule.

Syntax

public bool AddFilterRule(string mask, int accessFlags, long controlFlags);
Public Function AddFilterRule(ByVal Mask As String, ByVal AccessFlags As Integer, ByVal ControlFlags As Long) As Boolean

Remarks

This method adds a standard filter rule or access rule for the registry keys that matches the specified Mask. Each rule in a ruleset is uniquely identified by its mask; if a rule with the specified mask already exists, the new rule's parameters are merged into it. If the rule is added successfully, this method returns true; otherwise, it returns false.

Standard filter rules determine which registry operations, of those performed on matching registry keys, the component should fire its events for. Access rules instruct the component's system driver to apply certain access restrictions to matching registry keys.

The Mask parameter must be a valid registry key mask according to the Registry Key Masks topic. Only the registry keys that match the specified mask will be covered by the rule.

The AccessFlags parameter specifies which access restrictions the component's system driver should apply to matching registry keys. The value passed for this parameter should be constructed by ORing together zero or more of the following flags:

ACCESS_NONE0x00No access restrictions.

ACCESS_READ_ONLY0x01Read-only access; writing and deleting are prohibited.

ACCESS_WRITE_ONLY0x02Write-only access; reading and deleting are prohibited.

ACCESS_DELETE_PROTECT0x04Deleting and renaming are prohibited.

ACCESS_EXECUTE_PROTECT0x08Execution is prohibited.

ACCESS_NO_CHANGE_DAC0x10Change of security attributes is prohibited.

ACCESS_NO_CHANGE_OWNER0x20Change of owner is prohibited.

ACCESS_RENAME_PROTECT0x40Renaming is prohibited.

ACCESS_DELETE_ONLY_PROTECT0x80Deleting is prohibited (renaming is not affected).

ACCESS_REMOTE_ACCESS_PROTECT0x100Access from other systems is prohibited.

ACCESS_DENY_ALL0x200All access is denied.

ACCESS_ALL_FLAGS-1Used to denote all currently set access restriction flags.

The ControlFlags parameter specifies which registry operations the component should fire Control Events for. The value passed for this parameter should be constructed by ORing together zero or more of the following flags:

REG_CE_NONE0Don't fire for any registry operations.

Control Events will not fire for any registry operations.

REG_CE_BEFORE_CREATE_KEY0x00000001LFire before registry key creation operations.

The BeforeCreateKey event will fire anytime the OS attempts to create a registry key.

REG_CE_AFTER_CREATE_KEY0x00000002LFire after registry key creation operations.

The AfterCreateKey event will fire after a registry key creation request has been processed, before the response is returned.

REG_CE_BEFORE_OPEN_KEY0x00000004LFire before registry key open operations.

The BeforeOpenKey event will fire anytime the OS attempts to open a registry key.

REG_CE_AFTER_OPEN_KEY0x00000008LFire after registry key open operations.

The AfterOpenKey event will fire after a registry key open request has been processed, before the response is returned.

REG_CE_BEFORE_CLOSE_KEY0x00000010LFire before registry key close operations.

The BeforeCloseKey event will fire anytime the OS closes a registry key.

REG_CE_AFTER_CLOSE_KEY0x00000020LFire after registry key close operations.

The AfterCloseKey event will fire after a registry key close request has been processed, before the response is returned.

REG_CE_BEFORE_DELETE_KEY0x00000040LFire before registry key delete operations.

The BeforeDeleteKey event will fire anytime the OS attempts to delete a registry key.

REG_CE_AFTER_DELETE_KEY0x00000080LFire after registry key delete operations.

The AfterDeleteKey event will fire after a registry key delete request has been processed, before the response is returned.

REG_CE_BEFORE_RENAME_KEY0x00000100LFire before registry key rename operations.

The BeforeRenameKey event will fire anytime the OS attempts to rename a registry key.

REG_CE_AFTER_RENAME_KEY0x00000200LFire after registry key rename operations.

The AfterRenameKey event will fire after a registry key rename request has been processed, before the response is returned.

REG_CE_BEFORE_ENUM_KEY0x00000400LFire before subkey enumeration operations.

The BeforeEnumerateKey event will fire anytime the OS attempts to enumerate a registry key's subkeys.

REG_CE_AFTER_ENUM_KEY0x00000800LFire after subkey enumeration operations.

The AfterEnumerateKey event will fire after a subkey enumeration request has been processed, before the response is returned.

REG_CE_BEFORE_QUERY_KEY0x00001000LFire before registry key metadata retrieval operations.

The BeforeQueryKey event will fire anytime the OS attempts to retrieve a registry key's metadata.

REG_CE_AFTER_QUERY_KEY0x00002000LFire after registry key metadata retrieval operations.

The AfterQueryKey event will fire after a registry key metadata retrieval request has been processed, before the response is returned.

REG_CE_BEFORE_SET_KEY0x00004000LFire before registry key metadata update operations.

The BeforeSetKey event will fire anytime the OS attempts to update a registry key's metadata.

REG_CE_AFTER_SET_KEY0x00008000LFire after registry key metadata update operations.

The AfterSetKey event will fire after a registry key metadata update request has been processed, before the response is returned.

REG_CE_BEFORE_DELETE_VALUE0x00010000LFire before registry value delete operations.

The BeforeDeleteValue event will fire anytime the OS attempts to delete a registry value.

REG_CE_AFTER_DELETE_VALUE0x00020000LFire after registry value delete operations.

The AfterDeleteValue event will fire after a registry value delete request has been processed, before the response is returned.

REG_CE_BEFORE_ENUM_VALUE0x00040000LFire before value enumeration operations.

The BeforeEnumerateValue event will fire anytime the OS attempts to enumerate a registry key's values.

REG_CE_AFTER_ENUM_VALUE0x00080000LFire after value enumeration operations.

The AfterEnumerateValue event will fire after a value enumeration request has been processed, before the response is returned.

REG_CE_BEFORE_QUERY_VALUE0x00100000LFire before registry value query operations.

The BeforeQueryValue event will fire anytime the OS attempts to query a registry value.

REG_CE_AFTER_QUERY_VALUE0x00200000LFire after registry value query operations.

The AfterQueryValue event will fire after a registry value query request has been processed, before the response is returned.

REG_CE_BEFORE_SET_VALUE0x00400000LFire before registry value set/update operations.

The BeforeSetValue event will fire anytime the OS attempts to set or update a registry value.

REG_CE_AFTER_SET_VALUE0x00800000LFire after registry value set/update operations.

The AfterSetValue event will fire after a registry value set or update request has been processed, before the response is returned.

REG_CE_BEFORE_GET_KEY_SECURITY0x001000000LFire before get registry key security operations.

The BeforeGetKeySecurity event will fire before the OS queries the security attributes of a registry key.

REG_CE_AFTER_GET_KEY_SECURITY0x002000000LFire after registry value query operations.

The AfterGetKeySecurity event will fire after a get security operation has been processed, before the response is returned.

REG_CE_BEFORE_SET_KEY_SECURITY0x004000000LFire before registry value set/update operations.

The BeforeSetValue event will fire anytime the OS needs to change the security attributes of a registry key.

REG_CE_AFTER_SET_KEY_SECURITY0x008000000LFire after registry value set/update operations.

The AfterSetValue event will fire after a security attributes change request has been processed, before the response is returned.

REG_CE_ALL-1Fire for all registry operations.

Control Events will fire for all registry operations.

Note: The methods and properties related to rule management are not intended to be used from multiple threads at once. Applications that wish to use said methods and properties from multiple threads are responsible for employing proper thread synchronization techniques to ensure that manipulation and enumeration of the rule lists occurs in a thread-safe manner.

AddIgnoredProcessById Method (CBRegistry Component)

This method adds a process, by process Id (PID), to the list of ignored processes.

Syntax

public void AddIgnoredProcessById(int processId, bool includeChildren);
Public Sub AddIgnoredProcessById(ByVal ProcessId As Integer, ByVal IncludeChildren As Boolean)

Remarks

This method adds the process with the specified ProcessId (PID) to the list of processes whose requests should be ignored (i.e., that the component should not fire events for).

This method is provided for compatibility with CBFS Registry 2017. Use of the new AddFilterRule, DeleteFilterRule, and related methods is recommended instead.

The ProcessId parameter specifies the PID of the process whose requests should be ignored. The value passed for this parameter must be the PID of an existing process. When adding a PID-based rule, you need to be aware of the PID Reuse behavior of Windows.

The IncludeChildren parameter specifies whether requests made by the specified process's children should also be ignored.

Note: The component's system driver ignores all processes' requests by default; applications should use this method only to explicitly exclude a process that would otherwise be filtered because of a process filtering rule added with AddFilteredProcessById or AddFilteredProcessByName.

Note: This method can be called only when Active is true.

AddIgnoredProcessByName Method (CBRegistry Component)

This method adds a process, by name, to the list of ignored processes.

Syntax

public void AddIgnoredProcessByName(string processName, bool includeChildren);
Public Sub AddIgnoredProcessByName(ByVal ProcessName As String, ByVal IncludeChildren As Boolean)

Remarks

This method adds the process with the specified ProcessName to the list of processes whose requests should be ignored (i.e., that the component should not fire events for).

This method is provided for compatibility with CBFS Registry 2017. Use of the new AddFilterRule, DeleteFilterRule, and related methods is recommended instead.

The ProcessName parameter must be a valid process executable name. It may optionally begin with a path, and both the name and the path (if present) may include wildcards (* and ?). A process with a matching executable name does not actually need to exist when this method is called.

The IncludeChildren parameter specifies whether requests made by the specified process's children should also be ignored.

Note: The component's system driver ignores all processes' requests by default; applications should use this method only to explicitly exclude a process that would otherwise be filtered because of a process filtering rule added with AddFilteredProcessById or AddFilteredProcessByName.

Note: This method can be called only when Active is true.

AddPassthroughRule Method (CBRegistry Component)

This method adds a passthrough rule.

Syntax

public bool AddPassthroughRule(string mask, int accessFlags, long controlFlags);
Public Function AddPassthroughRule(ByVal Mask As String, ByVal AccessFlags As Integer, ByVal ControlFlags As Long) As Boolean

Remarks

This method adds a passthrough rule for the registry keys that matches the specified Mask. Each rule in a ruleset is uniquely identified by its mask; if a rule with the specified mask already exists, the new rule's parameters are merged into it.

If the rule is added successfully, this method returns true; otherwise, it returns false.

Passthrough rules exclude matching registry keys from being processed by other filter rules.

The Mask parameter must be a valid registry key mask according to the Registry Key Masks topic. Only the registry keys that match the specified mask will be covered by the rule.

The AccessFlags parameter specifies which access restrictions the component's system driver should lift from matching registry keys. The value passed for this parameter should be constructed by ORing together zero or more of the following flags:

ACCESS_NONE0x00No access restrictions.

ACCESS_READ_ONLY0x01Read-only access; writing and deleting are prohibited.

ACCESS_WRITE_ONLY0x02Write-only access; reading and deleting are prohibited.

ACCESS_DELETE_PROTECT0x04Deleting and renaming are prohibited.

ACCESS_EXECUTE_PROTECT0x08Execution is prohibited.

ACCESS_NO_CHANGE_DAC0x10Change of security attributes is prohibited.

ACCESS_NO_CHANGE_OWNER0x20Change of owner is prohibited.

ACCESS_RENAME_PROTECT0x40Renaming is prohibited.

ACCESS_DELETE_ONLY_PROTECT0x80Deleting is prohibited (renaming is not affected).

ACCESS_REMOTE_ACCESS_PROTECT0x100Access from other systems is prohibited.

ACCESS_DENY_ALL0x200All access is denied.

ACCESS_ALL_FLAGS-1Used to denote all currently set access restriction flags.

The ControlFlags parameter specifies which registry operations the component should not fire Control Events for. The value passed for this parameter should be constructed by ORing together zero or more of the following flags:

REG_CE_NONE0Don't fire for any registry operations.

Control Events will not fire for any registry operations.

REG_CE_BEFORE_CREATE_KEY0x00000001LFire before registry key creation operations.

The BeforeCreateKey event will fire anytime the OS attempts to create a registry key.

REG_CE_AFTER_CREATE_KEY0x00000002LFire after registry key creation operations.

The AfterCreateKey event will fire after a registry key creation request has been processed, before the response is returned.

REG_CE_BEFORE_OPEN_KEY0x00000004LFire before registry key open operations.

The BeforeOpenKey event will fire anytime the OS attempts to open a registry key.

REG_CE_AFTER_OPEN_KEY0x00000008LFire after registry key open operations.

The AfterOpenKey event will fire after a registry key open request has been processed, before the response is returned.

REG_CE_BEFORE_CLOSE_KEY0x00000010LFire before registry key close operations.

The BeforeCloseKey event will fire anytime the OS closes a registry key.

REG_CE_AFTER_CLOSE_KEY0x00000020LFire after registry key close operations.

The AfterCloseKey event will fire after a registry key close request has been processed, before the response is returned.

REG_CE_BEFORE_DELETE_KEY0x00000040LFire before registry key delete operations.

The BeforeDeleteKey event will fire anytime the OS attempts to delete a registry key.

REG_CE_AFTER_DELETE_KEY0x00000080LFire after registry key delete operations.

The AfterDeleteKey event will fire after a registry key delete request has been processed, before the response is returned.

REG_CE_BEFORE_RENAME_KEY0x00000100LFire before registry key rename operations.

The BeforeRenameKey event will fire anytime the OS attempts to rename a registry key.

REG_CE_AFTER_RENAME_KEY0x00000200LFire after registry key rename operations.

The AfterRenameKey event will fire after a registry key rename request has been processed, before the response is returned.

REG_CE_BEFORE_ENUM_KEY0x00000400LFire before subkey enumeration operations.

The BeforeEnumerateKey event will fire anytime the OS attempts to enumerate a registry key's subkeys.

REG_CE_AFTER_ENUM_KEY0x00000800LFire after subkey enumeration operations.

The AfterEnumerateKey event will fire after a subkey enumeration request has been processed, before the response is returned.

REG_CE_BEFORE_QUERY_KEY0x00001000LFire before registry key metadata retrieval operations.

The BeforeQueryKey event will fire anytime the OS attempts to retrieve a registry key's metadata.

REG_CE_AFTER_QUERY_KEY0x00002000LFire after registry key metadata retrieval operations.

The AfterQueryKey event will fire after a registry key metadata retrieval request has been processed, before the response is returned.

REG_CE_BEFORE_SET_KEY0x00004000LFire before registry key metadata update operations.

The BeforeSetKey event will fire anytime the OS attempts to update a registry key's metadata.

REG_CE_AFTER_SET_KEY0x00008000LFire after registry key metadata update operations.

The AfterSetKey event will fire after a registry key metadata update request has been processed, before the response is returned.

REG_CE_BEFORE_DELETE_VALUE0x00010000LFire before registry value delete operations.

The BeforeDeleteValue event will fire anytime the OS attempts to delete a registry value.

REG_CE_AFTER_DELETE_VALUE0x00020000LFire after registry value delete operations.

The AfterDeleteValue event will fire after a registry value delete request has been processed, before the response is returned.

REG_CE_BEFORE_ENUM_VALUE0x00040000LFire before value enumeration operations.

The BeforeEnumerateValue event will fire anytime the OS attempts to enumerate a registry key's values.

REG_CE_AFTER_ENUM_VALUE0x00080000LFire after value enumeration operations.

The AfterEnumerateValue event will fire after a value enumeration request has been processed, before the response is returned.

REG_CE_BEFORE_QUERY_VALUE0x00100000LFire before registry value query operations.

The BeforeQueryValue event will fire anytime the OS attempts to query a registry value.

REG_CE_AFTER_QUERY_VALUE0x00200000LFire after registry value query operations.

The AfterQueryValue event will fire after a registry value query request has been processed, before the response is returned.

REG_CE_BEFORE_SET_VALUE0x00400000LFire before registry value set/update operations.

The BeforeSetValue event will fire anytime the OS attempts to set or update a registry value.

REG_CE_AFTER_SET_VALUE0x00800000LFire after registry value set/update operations.

The AfterSetValue event will fire after a registry value set or update request has been processed, before the response is returned.

REG_CE_BEFORE_GET_KEY_SECURITY0x001000000LFire before get registry key security operations.

The BeforeGetKeySecurity event will fire before the OS queries the security attributes of a registry key.

REG_CE_AFTER_GET_KEY_SECURITY0x002000000LFire after registry value query operations.

The AfterGetKeySecurity event will fire after a get security operation has been processed, before the response is returned.

REG_CE_BEFORE_SET_KEY_SECURITY0x004000000LFire before registry value set/update operations.

The BeforeSetValue event will fire anytime the OS needs to change the security attributes of a registry key.

REG_CE_AFTER_SET_KEY_SECURITY0x008000000LFire after registry value set/update operations.

The AfterSetValue event will fire after a security attributes change request has been processed, before the response is returned.

REG_CE_ALL-1Fire for all registry operations.

Control Events will fire for all registry operations.

Note: The methods and properties related to rule management are not intended to be used from multiple threads at once. Applications that wish to use said methods and properties from multiple threads are responsible for employing proper thread synchronization techniques to ensure that manipulation and enumeration of the rule lists occurs in a thread-safe manner.

CloseDefaultRulesSnapshot Method (CBRegistry Component)

This method closes the previously created default rules snapshot.

Syntax

public void CloseDefaultRulesSnapshot();
Public Sub CloseDefaultRulesSnapshot()

Remarks

This method closes the default rules snapshot previously created by CreateDefaultRulesSnapshot, releasing the memory associated with it. Please refer to that method's documentation for more information.

Note: This method cannot be called within events.

The methods and properties related to rule management are not intended to be used from multiple threads at once. Applications that wish to use said methods and properties from multiple threads (e.g., during the AfterFilterAttachToVolume and AfterFilterDetachFromVolume events) are responsible for employing proper thread synchronization techniques to ensure that manipulation and enumeration of the rule lists both occur in a thread-safe manner.

Config Method (CBRegistry Component)

Sets or retrieves a configuration setting.

Syntax

public string Config(string configurationString);
Public Function Config(ByVal ConfigurationString As String) As String

Remarks

Config is a generic method available in every component. It is used to set and retrieve configuration settings for the component.

These settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the component, access to these internal properties is provided through the Config method.

To set a configuration setting named PROPERTY, you must call Config("PROPERTY=VALUE"), where VALUE is the value of the setting expressed as a string. For boolean values, use the strings "True", "False", "0", "1", "Yes", or "No" (case does not matter).

To read (query) the value of a configuration setting, you must call Config("PROPERTY"). The value will be returned as a string.

CreateDefaultRulesSnapshot Method (CBRegistry Component)

This method creates a snapshot of information about the default rules that have been added.

Syntax

public void CreateDefaultRulesSnapshot(string productGUID);
Public Sub CreateDefaultRulesSnapshot(ByVal ProductGUID As String)

Remarks

This method creates a snapshot of information about all default rules that have been added by the application identified by ProductGUID. This information is then used to populate the DefaultRules collection property.

When the application is finished working with the default rules snapshot, it must close it by calling the CloseDefaultRulesSnapshot method to release the associated memory. If this method is called again before an existing snapshot is closed, the component will attempt to close it before creating a new one.

Note: This method cannot be called within events.

The methods and properties related to rule management are not intended to be used from multiple threads at once. Applications that wish to use said methods and properties from multiple threads (e.g., during the AfterFilterAttachToVolume and AfterFilterDetachFromVolume events) are responsible for employing proper thread synchronization techniques to ensure that manipulation and enumeration of the rule lists both occur in a thread-safe manner.

DeleteAllFilterRules Method (CBRegistry Component)

This method deletes all standard filter rules.

Syntax

public bool DeleteAllFilterRules();
Public Function DeleteAllFilterRules() As Boolean

Remarks

This method deletes all standard filter rules that are currently present.

If the rules are deleted successfully, this method returns true; otherwise, it returns false.

To delete standard filter rules individually, use the DeleteFilterRule method instead.

Note: The methods and properties related to rule management are not intended to be used from multiple threads at once. Applications that wish to use said methods and properties from multiple threads are responsible for employing proper thread synchronization techniques to ensure that manipulation and enumeration of the rule lists occurs in a thread-safe manner.

DeleteAllPassthroughRules Method (CBRegistry Component)

This method deletes all passthrough rules.

Syntax

public bool DeleteAllPassthroughRules();
Public Function DeleteAllPassthroughRules() As Boolean

Remarks

This method deletes all passthrough rules that are currently present.

If the rules are deleted successfully, this method returns true; otherwise, it returns false.

To delete passthrough rules individually, use the DeletePassthroughRule method instead.

Note: The methods and properties related to rule management are not intended to be used from multiple threads at once. Applications that wish to use said methods and properties from multiple threads are responsible for employing proper thread synchronization techniques to ensure that manipulation and enumeration of the rule lists occurs in a thread-safe manner.

DeleteDefaultRule Method (CBRegistry Component)

This method deletes a particular default rule.

Syntax

public bool DeleteDefaultRule(string mask, int accessFlags, string productGUID);
Public Function DeleteDefaultRule(ByVal Mask As String, ByVal AccessFlags As Integer, ByVal ProductGUID As String) As Boolean

Remarks

This method deletes the specified AccessFlags from the default rule identified by Mask and associated with the application identified by ProductGUID. If AccessFlags includes all flags currently present in the rule, then the entire rule is deleted; otherwise, the flags specified by AccessFlags are simply removed from the rule.

If the flags or this rule are deleted successfully, this method returns true; otherwise, it returns false.

The Mask parameter must be the registry key mask of an existing rule. If a rule with the specified mask cannot be found, this method will fail.

The AccessFlags parameter specifies which access restrictions should be removed from the rule. The value passed for this parameter should be constructed by ORing together zero or more of the following flags:

ACCESS_NONE0x00No access restrictions.

ACCESS_READ_ONLY0x01Read-only access; writing and deleting are prohibited.

ACCESS_WRITE_ONLY0x02Write-only access; reading and deleting are prohibited.

ACCESS_DELETE_PROTECT0x04Deleting and renaming are prohibited.

ACCESS_EXECUTE_PROTECT0x08Execution is prohibited.

ACCESS_NO_CHANGE_DAC0x10Change of security attributes is prohibited.

ACCESS_NO_CHANGE_OWNER0x20Change of owner is prohibited.

ACCESS_RENAME_PROTECT0x40Renaming is prohibited.

ACCESS_DELETE_ONLY_PROTECT0x80Deleting is prohibited (renaming is not affected).

ACCESS_REMOTE_ACCESS_PROTECT0x100Access from other systems is prohibited.

ACCESS_DENY_ALL0x200All access is denied.

ACCESS_ALL_FLAGS-1Used to denote all currently set access restriction flags.

In most cases, the value passed for the ProductGUID parameter should be the same one that was used to call the Initialize method. Please refer to the AddDefaultRule method's documentation for more information.

This method requires administrative rights to execute successfully. If the user account of the process that calls this method doesn't have such rights, the call will fail with an ERROR_PRIVILEGE_NOT_HELD (0x0522) error. Please refer to the Default Rules topic for more information.

Note: The methods and properties related to rule management are not intended to be used from multiple threads at once. Applications that wish to use said methods and properties from multiple threads are responsible for employing proper thread synchronization techniques to ensure that manipulation and enumeration of the rule lists occurs in a thread-safe manner.

DeleteFilterRule Method (CBRegistry Component)

This method deletes a particular standard filter rule or access rule.

Syntax

public bool DeleteFilterRule(string mask, int accessFlags, long controlFlags);
Public Function DeleteFilterRule(ByVal Mask As String, ByVal AccessFlags As Integer, ByVal ControlFlags As Long) As Boolean

Remarks

This method deletes the specified AccessFlags or ControlFlags from the standard filter rule or access rule identified by Mask. If the aforementioned parameters include all flags currently present in the rule, then the entire rule is deleted; otherwise, the specified flags are simply removed from the rule.

If the flags or this rule are deleted successfully, this method returns true; otherwise, it returns false.

The Mask parameter must be the registry key mask of an existing rule. If a rule with the specified mask cannot be found, this method will fail.

The AccessFlags parameter specifies which access restrictions should be removed from the rule. The value passed for this parameter should be constructed by ORing together zero or more of the following flags:

ACCESS_NONE0x00No access restrictions.

ACCESS_READ_ONLY0x01Read-only access; writing and deleting are prohibited.

ACCESS_WRITE_ONLY0x02Write-only access; reading and deleting are prohibited.

ACCESS_DELETE_PROTECT0x04Deleting and renaming are prohibited.

ACCESS_EXECUTE_PROTECT0x08Execution is prohibited.

ACCESS_NO_CHANGE_DAC0x10Change of security attributes is prohibited.

ACCESS_NO_CHANGE_OWNER0x20Change of owner is prohibited.

ACCESS_RENAME_PROTECT0x40Renaming is prohibited.

ACCESS_DELETE_ONLY_PROTECT0x80Deleting is prohibited (renaming is not affected).

ACCESS_REMOTE_ACCESS_PROTECT0x100Access from other systems is prohibited.

ACCESS_DENY_ALL0x200All access is denied.

ACCESS_ALL_FLAGS-1Used to denote all currently set access restriction flags.

The ControlFlags parameter specifies which Control Event flags should be removed from the rule. The value passed for this parameter should be constructed by ORing together zero or more of the following flags:

REG_CE_NONE0Don't fire for any registry operations.

Control Events will not fire for any registry operations.

REG_CE_BEFORE_CREATE_KEY0x00000001LFire before registry key creation operations.

The BeforeCreateKey event will fire anytime the OS attempts to create a registry key.

REG_CE_AFTER_CREATE_KEY0x00000002LFire after registry key creation operations.

The AfterCreateKey event will fire after a registry key creation request has been processed, before the response is returned.

REG_CE_BEFORE_OPEN_KEY0x00000004LFire before registry key open operations.

The BeforeOpenKey event will fire anytime the OS attempts to open a registry key.

REG_CE_AFTER_OPEN_KEY0x00000008LFire after registry key open operations.

The AfterOpenKey event will fire after a registry key open request has been processed, before the response is returned.

REG_CE_BEFORE_CLOSE_KEY0x00000010LFire before registry key close operations.

The BeforeCloseKey event will fire anytime the OS closes a registry key.

REG_CE_AFTER_CLOSE_KEY0x00000020LFire after registry key close operations.

The AfterCloseKey event will fire after a registry key close request has been processed, before the response is returned.

REG_CE_BEFORE_DELETE_KEY0x00000040LFire before registry key delete operations.

The BeforeDeleteKey event will fire anytime the OS attempts to delete a registry key.

REG_CE_AFTER_DELETE_KEY0x00000080LFire after registry key delete operations.

The AfterDeleteKey event will fire after a registry key delete request has been processed, before the response is returned.

REG_CE_BEFORE_RENAME_KEY0x00000100LFire before registry key rename operations.

The BeforeRenameKey event will fire anytime the OS attempts to rename a registry key.

REG_CE_AFTER_RENAME_KEY0x00000200LFire after registry key rename operations.

The AfterRenameKey event will fire after a registry key rename request has been processed, before the response is returned.

REG_CE_BEFORE_ENUM_KEY0x00000400LFire before subkey enumeration operations.

The BeforeEnumerateKey event will fire anytime the OS attempts to enumerate a registry key's subkeys.

REG_CE_AFTER_ENUM_KEY0x00000800LFire after subkey enumeration operations.

The AfterEnumerateKey event will fire after a subkey enumeration request has been processed, before the response is returned.

REG_CE_BEFORE_QUERY_KEY0x00001000LFire before registry key metadata retrieval operations.

The BeforeQueryKey event will fire anytime the OS attempts to retrieve a registry key's metadata.

REG_CE_AFTER_QUERY_KEY0x00002000LFire after registry key metadata retrieval operations.

The AfterQueryKey event will fire after a registry key metadata retrieval request has been processed, before the response is returned.

REG_CE_BEFORE_SET_KEY0x00004000LFire before registry key metadata update operations.

The BeforeSetKey event will fire anytime the OS attempts to update a registry key's metadata.

REG_CE_AFTER_SET_KEY0x00008000LFire after registry key metadata update operations.

The AfterSetKey event will fire after a registry key metadata update request has been processed, before the response is returned.

REG_CE_BEFORE_DELETE_VALUE0x00010000LFire before registry value delete operations.

The BeforeDeleteValue event will fire anytime the OS attempts to delete a registry value.

REG_CE_AFTER_DELETE_VALUE0x00020000LFire after registry value delete operations.

The AfterDeleteValue event will fire after a registry value delete request has been processed, before the response is returned.

REG_CE_BEFORE_ENUM_VALUE0x00040000LFire before value enumeration operations.

The BeforeEnumerateValue event will fire anytime the OS attempts to enumerate a registry key's values.

REG_CE_AFTER_ENUM_VALUE0x00080000LFire after value enumeration operations.

The AfterEnumerateValue event will fire after a value enumeration request has been processed, before the response is returned.

REG_CE_BEFORE_QUERY_VALUE0x00100000LFire before registry value query operations.

The BeforeQueryValue event will fire anytime the OS attempts to query a registry value.

REG_CE_AFTER_QUERY_VALUE0x00200000LFire after registry value query operations.

The AfterQueryValue event will fire after a registry value query request has been processed, before the response is returned.

REG_CE_BEFORE_SET_VALUE0x00400000LFire before registry value set/update operations.

The BeforeSetValue event will fire anytime the OS attempts to set or update a registry value.

REG_CE_AFTER_SET_VALUE0x00800000LFire after registry value set/update operations.

The AfterSetValue event will fire after a registry value set or update request has been processed, before the response is returned.

REG_CE_BEFORE_GET_KEY_SECURITY0x001000000LFire before get registry key security operations.

The BeforeGetKeySecurity event will fire before the OS queries the security attributes of a registry key.

REG_CE_AFTER_GET_KEY_SECURITY0x002000000LFire after registry value query operations.

The AfterGetKeySecurity event will fire after a get security operation has been processed, before the response is returned.

REG_CE_BEFORE_SET_KEY_SECURITY0x004000000LFire before registry value set/update operations.

The BeforeSetValue event will fire anytime the OS needs to change the security attributes of a registry key.

REG_CE_AFTER_SET_KEY_SECURITY0x008000000LFire after registry value set/update operations.

The AfterSetValue event will fire after a security attributes change request has been processed, before the response is returned.

REG_CE_ALL-1Fire for all registry operations.

Control Events will fire for all registry operations.

To delete all standard filter rules and access rules, use the DeleteAllFilterRules method instead.

Note: The methods and properties related to rule management are not intended to be used from multiple threads at once. Applications that wish to use said methods and properties from multiple threads are responsible for employing proper thread synchronization techniques to ensure that manipulation and enumeration of the rule lists occurs in a thread-safe manner.

DeletePassthroughRule Method (CBRegistry Component)

This method deletes a particular passthrough rule.

Syntax

public bool DeletePassthroughRule(string mask, int accessFlags, long controlFlags);
Public Function DeletePassthroughRule(ByVal Mask As String, ByVal AccessFlags As Integer, ByVal ControlFlags As Long) As Boolean

Remarks

This method deletes the specified AccessFlags or ControlFlags from the passthrough rule identified by Mask. If the aforementioned parameters include all flags currently present in the rule, then the entire rule is deleted; otherwise, the specified flags are simply removed from the rule.

If the flags or this rule are deleted successfully, this method returns true; otherwise, it returns false.

The Mask parameter must be the registry key mask of an existing rule. If a rule with the specified mask cannot be found, this method will fail.

The AccessFlags parameter specifies which access restrictions should be removed from the rule. The value passed for this parameter should be constructed by ORing together zero or more of the following flags:

ACCESS_NONE0x00No access restrictions.

ACCESS_READ_ONLY0x01Read-only access; writing and deleting are prohibited.

ACCESS_WRITE_ONLY0x02Write-only access; reading and deleting are prohibited.

ACCESS_DELETE_PROTECT0x04Deleting and renaming are prohibited.

ACCESS_EXECUTE_PROTECT0x08Execution is prohibited.

ACCESS_NO_CHANGE_DAC0x10Change of security attributes is prohibited.

ACCESS_NO_CHANGE_OWNER0x20Change of owner is prohibited.

ACCESS_RENAME_PROTECT0x40Renaming is prohibited.

ACCESS_DELETE_ONLY_PROTECT0x80Deleting is prohibited (renaming is not affected).

ACCESS_REMOTE_ACCESS_PROTECT0x100Access from other systems is prohibited.

ACCESS_DENY_ALL0x200All access is denied.

ACCESS_ALL_FLAGS-1Used to denote all currently set access restriction flags.

The ControlFlags parameter specifies which Control Event flags should be removed from the rule. The value passed for this parameter should be constructed by ORing together zero or more of the following flags:

REG_CE_NONE0Don't fire for any registry operations.

Control Events will not fire for any registry operations.

REG_CE_BEFORE_CREATE_KEY0x00000001LFire before registry key creation operations.

The BeforeCreateKey event will fire anytime the OS attempts to create a registry key.

REG_CE_AFTER_CREATE_KEY0x00000002LFire after registry key creation operations.

The AfterCreateKey event will fire after a registry key creation request has been processed, before the response is returned.

REG_CE_BEFORE_OPEN_KEY0x00000004LFire before registry key open operations.

The BeforeOpenKey event will fire anytime the OS attempts to open a registry key.

REG_CE_AFTER_OPEN_KEY0x00000008LFire after registry key open operations.

The AfterOpenKey event will fire after a registry key open request has been processed, before the response is returned.

REG_CE_BEFORE_CLOSE_KEY0x00000010LFire before registry key close operations.

The BeforeCloseKey event will fire anytime the OS closes a registry key.

REG_CE_AFTER_CLOSE_KEY0x00000020LFire after registry key close operations.

The AfterCloseKey event will fire after a registry key close request has been processed, before the response is returned.

REG_CE_BEFORE_DELETE_KEY0x00000040LFire before registry key delete operations.

The BeforeDeleteKey event will fire anytime the OS attempts to delete a registry key.

REG_CE_AFTER_DELETE_KEY0x00000080LFire after registry key delete operations.

The AfterDeleteKey event will fire after a registry key delete request has been processed, before the response is returned.

REG_CE_BEFORE_RENAME_KEY0x00000100LFire before registry key rename operations.

The BeforeRenameKey event will fire anytime the OS attempts to rename a registry key.

REG_CE_AFTER_RENAME_KEY0x00000200LFire after registry key rename operations.

The AfterRenameKey event will fire after a registry key rename request has been processed, before the response is returned.

REG_CE_BEFORE_ENUM_KEY0x00000400LFire before subkey enumeration operations.

The BeforeEnumerateKey event will fire anytime the OS attempts to enumerate a registry key's subkeys.

REG_CE_AFTER_ENUM_KEY0x00000800LFire after subkey enumeration operations.

The AfterEnumerateKey event will fire after a subkey enumeration request has been processed, before the response is returned.

REG_CE_BEFORE_QUERY_KEY0x00001000LFire before registry key metadata retrieval operations.

The BeforeQueryKey event will fire anytime the OS attempts to retrieve a registry key's metadata.

REG_CE_AFTER_QUERY_KEY0x00002000LFire after registry key metadata retrieval operations.

The AfterQueryKey event will fire after a registry key metadata retrieval request has been processed, before the response is returned.

REG_CE_BEFORE_SET_KEY0x00004000LFire before registry key metadata update operations.

The BeforeSetKey event will fire anytime the OS attempts to update a registry key's metadata.

REG_CE_AFTER_SET_KEY0x00008000LFire after registry key metadata update operations.

The AfterSetKey event will fire after a registry key metadata update request has been processed, before the response is returned.

REG_CE_BEFORE_DELETE_VALUE0x00010000LFire before registry value delete operations.

The BeforeDeleteValue event will fire anytime the OS attempts to delete a registry value.

REG_CE_AFTER_DELETE_VALUE0x00020000LFire after registry value delete operations.

The AfterDeleteValue event will fire after a registry value delete request has been processed, before the response is returned.

REG_CE_BEFORE_ENUM_VALUE0x00040000LFire before value enumeration operations.

The BeforeEnumerateValue event will fire anytime the OS attempts to enumerate a registry key's values.

REG_CE_AFTER_ENUM_VALUE0x00080000LFire after value enumeration operations.

The AfterEnumerateValue event will fire after a value enumeration request has been processed, before the response is returned.

REG_CE_BEFORE_QUERY_VALUE0x00100000LFire before registry value query operations.

The BeforeQueryValue event will fire anytime the OS attempts to query a registry value.

REG_CE_AFTER_QUERY_VALUE0x00200000LFire after registry value query operations.

The AfterQueryValue event will fire after a registry value query request has been processed, before the response is returned.

REG_CE_BEFORE_SET_VALUE0x00400000LFire before registry value set/update operations.

The BeforeSetValue event will fire anytime the OS attempts to set or update a registry value.

REG_CE_AFTER_SET_VALUE0x00800000LFire after registry value set/update operations.

The AfterSetValue event will fire after a registry value set or update request has been processed, before the response is returned.

REG_CE_BEFORE_GET_KEY_SECURITY0x001000000LFire before get registry key security operations.

The BeforeGetKeySecurity event will fire before the OS queries the security attributes of a registry key.

REG_CE_AFTER_GET_KEY_SECURITY0x002000000LFire after registry value query operations.

The AfterGetKeySecurity event will fire after a get security operation has been processed, before the response is returned.

REG_CE_BEFORE_SET_KEY_SECURITY0x004000000LFire before registry value set/update operations.

The BeforeSetValue event will fire anytime the OS needs to change the security attributes of a registry key.

REG_CE_AFTER_SET_KEY_SECURITY0x008000000LFire after registry value set/update operations.

The AfterSetValue event will fire after a security attributes change request has been processed, before the response is returned.

REG_CE_ALL-1Fire for all registry operations.

Control Events will fire for all registry operations.

To delete all passthrough rules, use the DeleteAllPassthroughRules method instead.

Note: The methods and properties related to rule management are not intended to be used from multiple threads at once. Applications that wish to use said methods and properties from multiple threads are responsible for employing proper thread synchronization techniques to ensure that manipulation and enumeration of the rule lists occurs in a thread-safe manner.

GetDriverStatus Method (CBRegistry Component)

This method retrieves the status of the component's system driver.

Syntax

public int GetDriverStatus(string productGUID);
Public Function GetDriverStatus(ByVal ProductGUID As String) As Integer

Remarks

This method retrieves the status of the component's system driver. This status can then be used to verify whether it has been properly installed and is ready for use.

The value returned by the method corresponds to the dwCurrentState field of the SERVICE_STATUS structure from the Windows API. It will be one of the following:

MODULE_STATUS_NOT_PRESENT0x00000000The specified module is not present on the system.

MODULE_STATUS_STOPPED0x00000001The specified module is in the Stopped state.

MODULE_STATUS_RUNNING0x00000004The specified module is loaded and running.

ProductGUID is used to distinguish among driver installations performed by different applications. Such information is necessary to guard against unexpected situations, such as the driver being uninstalled by one application despite other applications still needing it.

Therefore, to ensure proper operation, it is critical that each individual application have its own unique ProductGUID value, and that applications (and their installation scripts) use that value when calling any of the following methods:

This method is available in both the component API and the Installer DLL included with the product; please refer to the Driver Installation topic for more information about the latter.

Note: This method cannot be called within events.

GetDriverVersion Method (CBRegistry Component)

This method retrieves the version of the component's system driver.

Syntax

public long GetDriverVersion(string productGUID);
Public Function GetDriverVersion(ByVal ProductGUID As String) As Long

Remarks

This method retrieves the version of the component's system driver. The value is returned as a 64-bit integer composed of four 16-bit words that each correspond to a piece of the overall module version. For example, a version of 2.32.6.28 would cause the value 0x000200200006001C to be returned.

If the component's system driver is not installed, this method returns 0.

ProductGUID is used to distinguish among driver installations performed by different applications. Such information is necessary to guard against unexpected situations, such as the driver being uninstalled by one application despite other applications still needing it.

Therefore, to ensure proper operation, it is critical that each individual application have its own unique ProductGUID value, and that applications (and their installation scripts) use that value when calling any of the following methods:

This method is available in both the component API and the Installer DLL included with the product; please refer to the Driver Installation topic for more information about the latter.

Note: This method cannot be called within events.

GetOriginatorProcessId Method (CBRegistry Component)

This method retrieves the process Id (PID) that initiated the operation.

Syntax

public int GetOriginatorProcessId();
Public Function GetOriginatorProcessId() As Integer

Remarks

This method can be called within events fired for registry operations to retrieve the process Id (PID) that initiated the operation. If the query fails, this method returns 0.

Note: PIDs are not unique and may be reused by different processes over time (although in practice, this is uncommon).

Note: This method can be called only within events.

GetOriginatorProcessName Method (CBRegistry Component)

This method retrieves the name of the process that initiated the operation.

Syntax

public string GetOriginatorProcessName();
Public Function GetOriginatorProcessName() As String

Remarks

This method can be called within events fired for registry operations to retrieve the name of the process that initiated the operation. If the query fails, this method returns empty string.

Note: This method can be called only within events.

GetOriginatorThreadId Method (CBRegistry Component)

This method retrieves the thread Id that initiated the operation.

Syntax

public int GetOriginatorThreadId();
Public Function GetOriginatorThreadId() As Integer

Remarks

This method can be called within events fired for registry operations to retrieve the thread Id that initiated the operation. If the query fails, this method returns 0.

Note: Thread Ids are not unique and may be reused by different threads over time.

Note: This method can be called only within events.

GetOriginatorToken Method (CBRegistry Component)

This method retrieves the security token associated with the process that initiated the operation.

Syntax

public long GetOriginatorToken();
Public Function GetOriginatorToken() As Long

Remarks

This method can be called within events fired for registry operations to retrieve the security token associated with the process that initiated the operation. If the query fails, this method returns INVALID_HANDLE_VALUE.

The security token returned by this method can be passed to the Windows API's GetTokenInformation function to obtain more information about the process.

Note: When applications are finished using the returned security token, they must close it using the Windows API's CloseHandle function.

Note: This method can be called only within events.

Initialize Method (CBRegistry Component)

This method initializes the component.

Syntax

public void Initialize(string productGUID);
Public Sub Initialize(ByVal ProductGUID As String)

Remarks

This method initializes the component and must be called each time the application starts before attempting to call any of the component's other methods with the exception of installation-related methods.

ProductGUID is used to distinguish among driver installations performed by different applications. Such information is necessary to guard against unexpected situations, such as the driver being uninstalled by one application despite other applications still needing it.

Therefore, to ensure proper operation, it is critical that each individual application have its own unique ProductGUID value, and that applications (and their installation scripts) use that value when calling any of the following methods:

If the required driver was not installed using the Install method with the same value of ProductGUID, Initialize will return a ERROR_FILE_NOT_FOUND error (Win32 error code 2).

If the loaded kernel-mode driver is older than the user-mode API, Initialize will return a ERROR_INVALID_KERNEL_INFO_VERSION error (Win32 error code 340). In this situation, an update of the driver using the Install method is required before the component can be used.

Install Method (CBRegistry Component)

This method installs (or upgrades) the component's system driver.

Syntax

public bool Install(string cabFileName, string productGUID, string pathToInstall, int flags);
Public Function Install(ByVal CabFileName As String, ByVal ProductGUID As String, ByVal PathToInstall As String, ByVal Flags As Integer) As Boolean

Remarks

This method is used to install or upgrade the component's system driver. If the system must be rebooted to complete the installation process, this method returns true; otherwise, it returns false.

Important: To upgrade the component's driver, use only the Install method. Previously installed versions of the driver should not be uninstalled first. Calling the Install method will upgrade the previously installed version.

Please refer to the Driver Installation topic for more information.

CabFileName must be the path of the .cab file containing the component's system driver.

Note: This .cab file must remain on the target system (or be available in some other way) after installation, because it is required to uninstall the driver from the system.

ProductGUID is used to distinguish among driver installations performed by different applications. Such information is necessary to guard against unexpected situations, such as the driver being uninstalled by one application despite other applications still needing it.

Therefore, to ensure proper operation, it is critical that each individual application have its own unique ProductGUID value, and that applications (and their installation scripts) use that value when calling any of the following methods:

PathToInstall controls where the driver is installed. Pass empty string (highly recommended) to automatically install the driver to the appropriate Windows system directory.

Flags specifies various installation options and should contain zero or more of the following flags, ORed together:

INSTALL_REMOVE_OLD_VERSIONS0x00000001Uninstall drivers from previous component versions (e.g., 2017).

INSTALL_KEEP_START_TYPE0x00000002Keep the driver's current start type setting in the registry.

If this flag is not set (default), the installation logic will reset the driver's start type setting in the Windows registry to the default value. Setting this flag causes the installation logic to preserve the current value, which may be necessary if the user (or the application) set it previously.

INSTALL_REQUESTS_VIA_DRIVER_STACK0x00000004Whether internal requests to the filesystem are sent directly to the filesystem driver or through the stack of filesystem filter drivers.

This flag is applicable only for CBFilter and CBMonitor.

After installation, the effects of this flag can be changed using the SendRequestsViaDriverStack configuration setting.

INSTALL_ALWAYS_PREPARE_FILES0x00010000Whether the driver should keep track of information for files that are already open when (i.e., were opened before) the component is initialized.

This flag is applicable only for CBFilter and CBMonitor.

If this flag is set, the driver will prepare information about each file as it is opened, regardless of whether a CBFilter/CBMonitor-based application is actually running at the time. This information then allows applications to receive events for any files that are already open when the CBFilter/CBMonitor component is initialized.

Note: These preparations will slow down all file open operations; do not enable this feature unless it is actually necessary.

After installation, the effects of this flag can be changed using the AlwaysPrepareFiles configuration setting.

INSTALL_FORCE_APP_PERMISSION_CHECK0x00020000Whether the driver should require the controller process to have elevated or system privileges.

This flag is not applicable for CBProcess.

If this flag is set, the driver will verify that the controller process is a system service (or is executing with elevated privileges) anytime a file is opened. If the controller process does not meet these requirements, the file will be skipped (i.e., not filtered in any way).

Note: This additional verification will slow down all file open operations.

After installation, the effects of this flag can be changed using the ForceAppPermissionCheck configuration setting.

INSTALL_FORCE_SECURITY_CHECKS0x00040000Whether the driver should prevent the controller process from filtering files that it would not normally have access to.

This flag is not applicable for CBProcess.

If this flag is set, the driver will check the security permissions of the controller process anytime a file is opened to verify that the process has access to the file. If the controller process does not have access to the file, the file will be skipped (i.e., not filtered in any way). For example, if this flag is set and the controller process is running with limited privileges, then the driver will not allow it to filter files that require greater privileges to access.

Note: This additional verification will slow down all file open operations.

After installation, the effects of this flag can be changed using the ForceSecurityChecks configuration setting.

This method is available in both the component API and the Installer DLL included with the product; please refer to the Driver Installation topic for more information about the latter.

This method requires administrative rights to execute successfully. If the user account of the process that calls this method doesn't have such rights, the call will fail with an ERROR_PRIVILEGE_NOT_HELD (0x0522) error.

Note: This method cannot be called within events.

RemoveFilteredProcessById Method (CBRegistry Component)

This method removes a process, by process Id (PID), from the list of filtered processes.

Syntax

public void RemoveFilteredProcessById(int processId);
Public Sub RemoveFilteredProcessById(ByVal ProcessId As Integer)

Remarks

This method removes the process with the specified ProcessId (PID) from the list of processes whose requests should be filtered.

This method is provided for compatibility with CBFS Registry 2017. Use of the new AddFilterRule, DeleteFilterRule, and related methods is recommended instead.

The value passed for ProcessId must be one that was previously used to call AddFilteredProcessById; please refer to its documentation for more information.

Note: This method can be called only when Active is true.

RemoveFilteredProcessByName Method (CBRegistry Component)

This method removes a process, by name, from the list of filtered processes.

Syntax

public void RemoveFilteredProcessByName(string processName);
Public Sub RemoveFilteredProcessByName(ByVal ProcessName As String)

Remarks

This method removes the process with the specified ProcessName from the list of processes whose requests should be filtered.

This method is provided for compatibility with CBFS Registry 2017. Use of the new AddFilterRule, DeleteFilterRule, and related methods is recommended instead.

The value passed for ProcessName must be one that was previously used to call AddFilteredProcessByName; please refer to its documentation for more information.

Note: This method can be called only when Active is true.

RemoveIgnoredProcessById Method (CBRegistry Component)

This method removes a process, by process Id (PID), from the list of ignored processes.

Syntax

public void RemoveIgnoredProcessById(int processId);
Public Sub RemoveIgnoredProcessById(ByVal ProcessId As Integer)

Remarks

This method removes the process with the specified ProcessId (PID) from the list of processes whose requests should be ignored.

This method is provided for compatibility with CBFS Registry 2017. Use of the new AddFilterRule, DeleteFilterRule, and related methods is recommended instead.

The value passed for ProcessId must be one that was previously used to call AddIgnoredProcessById; please refer to its documentation for more information.

Note: This method can be called only when Active is true.

RemoveIgnoredProcessByName Method (CBRegistry Component)

This method removes a process, by name, from the list of ignored processes.

Syntax

public void RemoveIgnoredProcessByName(string processName);
Public Sub RemoveIgnoredProcessByName(ByVal ProcessName As String)

Remarks

This method removes the process with the specified ProcessName from the list of processes whose requests should be ignored.

This method is provided for compatibility with CBFS Registry 2017. Use of the new AddFilterRule, DeleteFilterRule, and related methods is recommended instead.

The value passed for ProcessName must be one that was previously used to call AddIgnoredProcessByName; please refer to its documentation for more information.

Note: This method can be called only when Active is true.

ResetTimeout Method (CBRegistry Component)

This method resets the timeout duration for the current event handler.

Syntax

public bool ResetTimeout(int timeout);
Public Function ResetTimeout(ByVal Timeout As Integer) As Boolean

Remarks

When event timeouts are being enforced, this method can be called within an event handler to inform the component that request processing is taking longer than expected.

If called successfully, this method returns true, and the current event handler's timeout timer is immediately reset to 0; when it reaches the number of milliseconds specified by Timeout, the driver will either "release" the underlying request and pass it onwards, or cancel it by reporting an error; whichever is most appropriate for the event in question. Please refer to the Timeouts topic for more information.

Passing 0 for Timeout disables the timeout timer for the current event handler, allowing it to take as long as it needs to complete.

Note: This method can be called only within events.

ShutdownSystem Method (CBRegistry Component)

Shuts down or reboots the operating system.

Syntax

public bool ShutdownSystem(string shutdownPrompt, int timeout, bool forceCloseApps, bool reboot);
Public Function ShutdownSystem(ByVal ShutdownPrompt As String, ByVal Timeout As Integer, ByVal ForceCloseApps As Boolean, ByVal Reboot As Boolean) As Boolean

Remarks

This method shuts down or (if Reboot is true) reboots the operating system. If the appropriate privileges cannot be obtained, or if the InitiateSystemShutdown system call returns false, then this method will return false; otherwise, it returns true. This method can be used if the installation or uninstallation function requires the system to be rebooted in order to complete.

ShutdownPrompt, if non-empty, specifies a message that the OS should display to the user for Timeout seconds. If empty string is passed for ShutdownPrompt, no message is displayed and the Timeout parameter's value is ignored.

ForceCloseApps specifies whether the OS should forcefully close all applications. Please keep in mind that forceful closing of applications with unsaved data can lead to data loss.

Reboot specifies whether the OS should reboot (true) or just shut down (false).

This method is available in both the component API and the Installer DLL included with the product; please refer to the Driver Installation topic for more information about the latter.

Note: This method cannot be called within events.

StartFilter Method (CBRegistry Component)

This method starts filtering registry operations.

Syntax

public void StartFilter(int timeout);
Public Sub StartFilter(ByVal Timeout As Integer)

Remarks

This method attaches the filter, causing the component's driver to start filtering registry operations according to the filter rules currently present. Rules can be added and removed both before and after this method is called, so long as the Initialize method is called before doing anything else.

The Timeout parameter specifies how many milliseconds the driver should wait for events to execute before releasing or cancelling the underlying OS requests; please refer to the Timeouts topic for more information. Valid values are 0, which disables event timeouts, and values greater than or equal to 3000. When event timeouts are in effect, event handlers can call ResetTimeout to reset the timer if they require additional time to complete.

This method can fail for a number of reasons, including (but not limited to) the following:

  • If the component's system driver has not been properly installed, or is awaiting a system reboot (as indicated by the return value of Install), this method fails with an ERROR_FILE_NOT_FOUND (2) error code.
  • If the Initialize method has not been called yet, this method fails with an ERROR_NOT_READY (21) error code.
  • If the filter is already Active, this method fails with an ERROR_CONNECTION_ACTIVE (1230) error code.
  • If an invalid value is passed for Timeout, this method fails with an ERROR_IMPLEMENTATION_LIMIT (1292) error code.

StopFilter Method (CBRegistry Component)

This method stops filtering registry operations.

Syntax

public void StopFilter();
Public Sub StopFilter()

Remarks

This method detaches the filter, causing the component's driver to stop filtering registry operations. This method will block until all pending requests have completed and the filter has been detached.

SuspendDefaultRules Method (CBRegistry Component)

This method suspends all default rules until the application exits.

Syntax

public bool SuspendDefaultRules(string productGUID);
Public Function SuspendDefaultRules(ByVal ProductGUID As String) As Boolean

Remarks

This method suspends (i.e., deactivates) all default rules associated with the application identified by ProductGUID until the application exits. If the rules are suspended successfully, this method returns true; otherwise, it returns false.

In most cases, the value passed for the ProductGUID parameter should be the same one that was used to call the Initialize method.

When the application exits, the component's system driver will reactivate the suspended rules and start enforcing them once again.

ToggleProcessProtection Method (CBRegistry Component)

This method enables or disables termination protection for the application.

Syntax

public bool ToggleProcessProtection(bool enabled);
Public Function ToggleProcessProtection(ByVal Enabled As Boolean) As Boolean

Remarks

This method controls the termination protection mechanism, which applications can enable to prevent their process and threads from being terminated. If successful, this method returns true; otherwise, it returns false.

The Enabled parameter specifies whether termination protection should be enabled (true) or disabled (false); it is disabled by default. If termination protection is enabled, an application must disable it before attempting to exit.

Note: When developing a GUI-based application, please keep in mind that the termination protection mechanism does not intercept Windows' notifications like WM_CLOSE or WM_QUIT; applications must intercept and handle such messages themselves if they wish to protect their UI. Please refer to Microsoft's Window Notifications articles for more information.

Uninstall Method (CBRegistry Component)

This method uninstalls the component's system driver.

Syntax

public bool Uninstall(string cabFileName, string productGUID, string installedPath, int flags);
Public Function Uninstall(ByVal CabFileName As String, ByVal ProductGUID As String, ByVal InstalledPath As String, ByVal Flags As Integer) As Boolean

Remarks

This method is used to uninstall the component's system driver. If the system must be rebooted to complete the uninstallation process, this method returns true; otherwise, it returns false.

Important: To upgrade the component's driver, use only the Install method. Previously installed versions of the driver should not be uninstalled first. Calling the Install method will upgrade the previously installed version.

Please refer to the Driver Installation topic for more information.

The same values must be passed for the CabFileName, ProductGUID, and InstalledPath parameters as were passed when Install was called; please refer to its documentation for more information.

Flags specifies which versions of the component's system driver should be uninstalled and which should be set by ORing together one or more of the following values:

UNINSTALL_VERSION_PREVIOUS0x00000001Uninstall modules from previous product versions.

UNINSTALL_VERSION_CURRENT0x00000002Uninstall modules from the current product version.

UNINSTALL_VERSION_ALL0x00000003Uninstall modules from all product versions.

This method is available in both the component API and the Installer DLL included with the product; please refer to the Driver Installation topic for more information about the latter.

This method requires administrative rights to execute successfully. If the user account of the process that calls this method doesn't have such rights, the call will fail with an ERROR_PRIVILEGE_NOT_HELD (0x0522) error.

Note: This method cannot be called within events.

AfterCloseKey Event (CBRegistry Component)

This event fires after a registry key is closed.

Syntax

public event OnAfterCloseKeyHandler OnAfterCloseKey;

public delegate void OnAfterCloseKeyHandler(object sender, CbregistryAfterCloseKeyEventArgs e);

public class CbregistryAfterCloseKeyEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public int ResultCode { get; set; }
}
Public Event OnAfterCloseKey As OnAfterCloseKeyHandler

Public Delegate Sub OnAfterCloseKeyHandler(sender As Object, e As CbregistryAfterCloseKeyEventArgs)

Public Class CbregistryAfterCloseKeyEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public Property ResultCode As Integer
End Class

Remarks

This event fires after a registry key is closed.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_AFTER_CLOSE_KEY flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

AfterCreateKey Event (CBRegistry Component)

This event fires after a registry key is created.

Syntax

public event OnAfterCreateKeyHandler OnAfterCreateKey;

public delegate void OnAfterCreateKeyHandler(object sender, CbregistryAfterCreateKeyEventArgs e);

public class CbregistryAfterCreateKeyEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public int Status { get; set; }
  public long KeyHandle { get; set; }
  public IntPtr KeyHandleContext { get; set; }
  public int GrantedAccess { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnAfterCreateKey As OnAfterCreateKeyHandler

Public Delegate Sub OnAfterCreateKeyHandler(sender As Object, e As CbregistryAfterCreateKeyEventArgs)

Public Class CbregistryAfterCreateKeyEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public Property Status As Integer
  Public Property KeyHandle As Long
  Public Property KeyHandleContext As IntPtr
  Public Property GrantedAccess As Integer
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires after a registry key is created.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_AFTER_CREATE_KEY flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires.

The Status parameter contains a Win32 error code that indicates the outcome of the operation; 0 indicates success. This value is returned to the request originator if no other status is returned from this event. Applications may change this parameter's value if they want a different Win32 error code to be returned.

The KeyHandle parameter specifies a handle to a registry key that should be opened instead of the one this event fired for. Applications can set this parameter to redirect access to the registry key associated with the specified handle.

The KeyHandleContext parameter is a placeholder for application-defined data associated with the application-provided registry key handle. Please refer to the Contexts topic for more information.

The GrantedAccess parameter specifies the granted access rights for an application-provided registry key handle. Applications that set KeyHandle must also set this parameter. Please refer to Microsoft's Registry Key Security and Access Rights article for more information about possible values.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

AfterDeleteKey Event (CBRegistry Component)

This event fires after a registry key is deleted.

Syntax

public event OnAfterDeleteKeyHandler OnAfterDeleteKey;

public delegate void OnAfterDeleteKeyHandler(object sender, CbregistryAfterDeleteKeyEventArgs e);

public class CbregistryAfterDeleteKeyEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public int Status { get; set; }
  public bool Processed { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnAfterDeleteKey As OnAfterDeleteKeyHandler

Public Delegate Sub OnAfterDeleteKeyHandler(sender As Object, e As CbregistryAfterDeleteKeyEventArgs)

Public Class CbregistryAfterDeleteKeyEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public Property Status As Integer
  Public Property Processed As Boolean
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires after a registry key is deleted.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_AFTER_DELETE_KEY flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires.

The Status parameter contains a Win32 error code that indicates the outcome of the operation; 0 indicates success. This value is returned to the request originator if no other status is returned from this event. Applications may change this parameter's value if they want a different Win32 error code to be returned.

The Processed parameter indicates whether the response values have been modified. Applications must set this parameter to true if they have altered any of the parameters related to the response values.

Note: This parameter's value is ignored if an error is returned via ResultCode.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

AfterDeleteValue Event (CBRegistry Component)

This event fires after a registry value is deleted.

Syntax

public event OnAfterDeleteValueHandler OnAfterDeleteValue;

public delegate void OnAfterDeleteValueHandler(object sender, CbregistryAfterDeleteValueEventArgs e);

public class CbregistryAfterDeleteValueEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public int Status { get; set; }
  public bool Processed { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnAfterDeleteValue As OnAfterDeleteValueHandler

Public Delegate Sub OnAfterDeleteValueHandler(sender As Object, e As CbregistryAfterDeleteValueEventArgs)

Public Class CbregistryAfterDeleteValueEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public Property Status As Integer
  Public Property Processed As Boolean
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires after a registry value is deleted.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_AFTER_DELETE_VALUE flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires. A similar strategy can be applied if the application needs the registry value's name, which can be stored in KeyContext during the corresponding Before* event.

The Status parameter contains a Win32 error code that indicates the outcome of the operation; 0 indicates success. This value is returned to the request originator if no other status is returned from this event. Applications may change this parameter's value if they want a different Win32 error code to be returned.

The Processed parameter indicates whether the response values have been modified. Applications must set this parameter to true if they have altered any of the parameters related to the response values.

Note: This parameter's value is ignored if an error is returned via ResultCode.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

AfterEnumerateKey Event (CBRegistry Component)

This event fires after a subkey's information is retrieved during key enumeration.

Syntax

public event OnAfterEnumerateKeyHandler OnAfterEnumerateKey;

public delegate void OnAfterEnumerateKeyHandler(object sender, CbregistryAfterEnumerateKeyEventArgs e);

public class CbregistryAfterEnumerateKeyEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public int Status { get; set; }
  public int Index { get; }
  public int ValidFields { get; }
  public DateTime LastWriteTime { get; set; }
  public string Name { get; set; }
  public string ClassName { get; set; }
  public int SubKeys { get; set; }
  public int MaxNameLength { get; set; }
  public int MaxClassNameLength { get; set; }
  public int Values { get; set; }
  public int MaxValueNameLength { get; set; }
  public int MaxValueDataSize { get; set; }
  public bool VirtualizationCandidate { get; set; }
  public bool VirtualizationEnabled { get; set; }
  public bool VirtualTarget { get; set; }
  public bool VirtualStore { get; set; }
  public bool VirtualSource { get; set; }
  public bool Processed { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnAfterEnumerateKey As OnAfterEnumerateKeyHandler

Public Delegate Sub OnAfterEnumerateKeyHandler(sender As Object, e As CbregistryAfterEnumerateKeyEventArgs)

Public Class CbregistryAfterEnumerateKeyEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public Property Status As Integer
  Public ReadOnly Property Index As Integer
  Public ReadOnly Property ValidFields As Integer
  Public Property LastWriteTime As DateTime
  Public Property Name As String
  Public Property ClassName As String
  Public Property SubKeys As Integer
  Public Property MaxNameLength As Integer
  Public Property MaxClassNameLength As Integer
  Public Property Values As Integer
  Public Property MaxValueNameLength As Integer
  Public Property MaxValueDataSize As Integer
  Public Property VirtualizationCandidate As Boolean
  Public Property VirtualizationEnabled As Boolean
  Public Property VirtualTarget As Boolean
  Public Property VirtualStore As Boolean
  Public Property VirtualSource As Boolean
  Public Property Processed As Boolean
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires after a subkey's information is retrieved during enumeration of a registry key's subkeys.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_AFTER_ENUM_KEY flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires.

The Status parameter contains a Win32 error code that indicates the outcome of the operation; 0 indicates success. This value is returned to the request originator if no other status is returned from this event. Applications may change this parameter's value if they want a different Win32 error code to be returned.

The Index parameter reflects the zero-based index of the key (within the registry key being enumerated).

The ValidFields parameter indicates which pieces of information about the key were retrieved. The value of this parameter is a combination of one or more of the following:

REG_KEYFIELD_LASTWRITETIME1A registry key's last write time.

REG_KEYFIELD_NAME2A registry key's name.

REG_KEYFIELD_MAXNAMELENGTH4A registry key's longest subkey name.

REG_KEYFIELD_CLASSNAME8A registry key's class name.

REG_KEYFIELD_MAXCLASSNAMELENGTH16A registry key's longest subkey class name.

REG_KEYFIELD_SUBKEYS32The number of subkeys a registry key has.

REG_KEYFIELD_VALUES64The number of values a registry key has.

REG_KEYFIELD_MAXVALUENAMELENGTH128A registry key's longest value name.

REG_KEYFIELD_MAXVALUEDATASIZE256A registry key's largest value data size.

REG_KEYFIELD_VIRTUALIZATIONINFO512A registry key's virtualization information.

The LastWriteTime parameter specifies when the key was last changed, specified in UTC.

The Name parameter specifies the key's name. The maximum length of a registry key name is 255 characters.

The ClassName parameter specifies the key's class name. The maximum length of a registry key class name is 255 characters.

The SubKeys parameter specifies the number of subkeys that the key has.

The MaxNameLength parameter specifies the length, in bytes, of the key's longest subkey name.

The MaxClassNameLength parameter specifies the length, in bytes, of the key's longest subkey class name.

The Values parameter specifies the number of values the key has.

The MaxValueNameLength parameter specifies the length, in bytes, of the key's longest value name.

The MaxValueDataSize parameter specifies the length, in bytes, of the subkey's largest value data size.

The VirtualizationCandidate parameter specifies whether the key is part of the virtualization namespace scope.

The VirtualizationEnabled parameter specifies whether virtualization is enabled on the key. This parameter can only be true if VirtualizationCandidate is true.

The VirtualTarget parameter specifies whether the key is a virtual key. This parameter can only be true if both VirtualizationCandidate and VirtualizationEnabled are both false. Its value is only valid on virtual store key handles.

The VirtualStore parameter specifies whether the key is part of the virtual store path.

The VirtualSource parameter specifies whether the key has ever been virtualized. This parameter can only be true if VirtualizationCandidate is true.

The Processed parameter indicates whether the response values have been modified. Applications must set this parameter to true if they have altered any of the parameters related to the response values.

Note: This parameter's value is ignored if an error is returned via ResultCode.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

AfterEnumerateValue Event (CBRegistry Component)

This event fires after a registry value's information is retrieved during key value enumeration.

Syntax

public event OnAfterEnumerateValueHandler OnAfterEnumerateValue;

public delegate void OnAfterEnumerateValueHandler(object sender, CbregistryAfterEnumerateValueEventArgs e);

public class CbregistryAfterEnumerateValueEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public int Status { get; set; }
  public int Index { get; }
  public int ValidFields { get; }
  public string ValueName { get; set; }
  public int ValueType { get; set; }
  public long IntegerValue { get; set; }
  public string StringValue { get; set; }
  public IntPtr BinaryValue { get; }
  public int MaxBinaryValueSize { get; }
  public int BinaryValueSize { get; set; }
  public bool Processed { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnAfterEnumerateValue As OnAfterEnumerateValueHandler

Public Delegate Sub OnAfterEnumerateValueHandler(sender As Object, e As CbregistryAfterEnumerateValueEventArgs)

Public Class CbregistryAfterEnumerateValueEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public Property Status As Integer
  Public ReadOnly Property Index As Integer
  Public ReadOnly Property ValidFields As Integer
  Public Property ValueName As String
  Public Property ValueType As Integer
  Public Property IntegerValue As Long
  Public Property StringValue As String
  Public ReadOnly Property BinaryValue As IntPtr
  Public ReadOnly Property MaxBinaryValueSize As Integer
  Public Property BinaryValueSize As Integer
  Public Property Processed As Boolean
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires after a registry value's information is retrieved during enumeration of a registry key's values.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_AFTER_ENUM_VALUE flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires.

The Status parameter contains a Win32 error code that indicates the outcome of the operation; 0 indicates success. This value is returned to the request originator if no other status is returned from this event. Applications may change this parameter's value if they want a different Win32 error code to be returned.

The Index parameter reflects the zero-based index of the registry value (within the registry key being enumerated).

The ValidFields parameter indicates which pieces of information about the registry value were retrieved. The value of this parameter is a combination of one or more of the following:

REG_VALUEFIELD_TYPE1A registry value's type.

REG_VALUEFIELD_NAME2A registry value's name.

REG_VALUEFIELD_DATA4A registry value's data.

The ValueName parameter specifies the registry value's name.

The ValueType parameter specifies the registry value's type and determines which of the other parameters holds the registry value's data (please refer to their descriptions for more information). Possible values are as follows:

REG_VALUETYPE_SZ1A unicode string.

REG_VALUETYPE_EXPAND_SZ2A unicode string that contains environmental variable references.

REG_VALUETYPE_BINARY3Binary data.

REG_VALUETYPE_DWORD4A 32-bit number.

REG_VALUETYPE_MULTI_SZ7Multiple unicode strings.

REG_VALUETYPE_QWORD11A 64-bit number.

The IntegerValue parameter specifies the registry value's data if ValueType is REG_VALUETYPE_DWORD or REG_VALUETYPE_QWORD.

The StringValue parameter specifies the registry value's data if ValueType is REG_VALUETYPE_SZ, REG_VALUETYPE_EXPAND_SZ, or REG_VALUETYPE_MULTI_SZ.

For REG_VALUETYPE_MULTI_SZ, data are formatted as multiple individual ETB-terminated strings concatenated together into a single null-terminated string (where ETB is the End-of-Transmission-Block character; 23/0x17). For example, the strings This is, a multistring, and value. would be encoded as This is[ETB]a multistring[ETB]value.[ETB][NUL].

Note: As Microsoft's Registry Value Types article describes, the native multistring data format uses null terminators for the individual strings (e.g., This is[NUL]a multistring[NUL]value.[NUL][NUL]); CBRegistry converts the individual null terminators to/from ETB characters internally for applications' convenience.

The BinaryValue parameter points to a memory buffer that holds the registry value's data if ValueType is REG_VALUETYPE_BINARY. The MaxBinaryValueSize and BinaryValueSize parameter specify the capacity of the BinaryValue buffer and the length of the data it contains, respectively, in bytes.

Always check MaxBinaryValueSize before copying any data into the BinaryValue buffer. If the buffer is large enough to hold all of the data, copy the data into it, and then update BinaryValueSize accordingly. If the buffer is not large enough, do not copy any data into it; instead, set BinaryValueSize to the required buffer size (i.e., the size of the data) and return the ERROR_MORE_DATA (234) error code via ResultCode.

The Processed parameter indicates whether the response values have been modified. Applications must set this parameter to true if they have altered any of the parameters related to the response values.

Note: This parameter's value is ignored if an error is returned via ResultCode.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

AfterGetKeySecurity Event (CBRegistry Component)

This event fires after a registry key's security attributes are changed.

Syntax

public event OnAfterGetKeySecurityHandler OnAfterGetKeySecurity;

public delegate void OnAfterGetKeySecurityHandler(object sender, CbregistryAfterGetKeySecurityEventArgs e);

public class CbregistryAfterGetKeySecurityEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public int Status { get; set; }
  public int SecurityInformation { get; }
  public IntPtr SecurityDescriptor { get; }
  public int Length { get; }
  public int LengthNeeded { get; set; }
  public bool Processed { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnAfterGetKeySecurity As OnAfterGetKeySecurityHandler

Public Delegate Sub OnAfterGetKeySecurityHandler(sender As Object, e As CbregistryAfterGetKeySecurityEventArgs)

Public Class CbregistryAfterGetKeySecurityEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public Property Status As Integer
  Public ReadOnly Property SecurityInformation As Integer
  Public ReadOnly Property SecurityDescriptor As IntPtr
  Public ReadOnly Property Length As Integer
  Public Property LengthNeeded As Integer
  Public Property Processed As Boolean
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires after security attributes are changed for the registry key specified by KeyContext.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_AFTER_GET_KEY_SECURITY flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires.

The Status parameter contains a Win32 error code that indicates the outcome of the operation; 0 indicates success. This value is returned to the request originator if no other status is returned from this event. Applications may change this parameter's value if they want a different Win32 error code to be returned.

The SecurityInformation parameter indicates which pieces of security information were requested. Please refer to Microsoft's SECURITY_INFORMATION data type documentation for more information about possible values.

The SecurityDescriptor parameter points to a memory buffer that, if the request was successful, contains the requested security information. The Length parameter reflects the length of the data, in bytes. Please see the Buffer Parameters topic for more information on how to work with memory buffer event parameters.

The data are formatted as a SECURITY_DESCRIPTOR structure in self-relative format; please refer to the Microsoft's documentation for more information.

Applications that wish to modify the security information may do so by replacing the data in the SecurityDescriptor buffer. If the current Length is too small to accommodate the new security information, set LengthNeeded to the number of bytes necessary to hold the data, and return the ERROR_INSUFFICIENT_BUFFER error code via ResultCode.

The Processed parameter indicates whether the response values have been modified. Applications must set this parameter to true if they have altered any of the parameters related to the response values.

Note: This parameter's value is ignored if an error is returned via ResultCode.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

AfterOpenKey Event (CBRegistry Component)

This event fires after a registry key is opened.

Syntax

public event OnAfterOpenKeyHandler OnAfterOpenKey;

public delegate void OnAfterOpenKeyHandler(object sender, CbregistryAfterOpenKeyEventArgs e);

public class CbregistryAfterOpenKeyEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public int Status { get; set; }
  public long KeyHandle { get; set; }
  public IntPtr KeyHandleContext { get; set; }
  public int GrantedAccess { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnAfterOpenKey As OnAfterOpenKeyHandler

Public Delegate Sub OnAfterOpenKeyHandler(sender As Object, e As CbregistryAfterOpenKeyEventArgs)

Public Class CbregistryAfterOpenKeyEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public Property Status As Integer
  Public Property KeyHandle As Long
  Public Property KeyHandleContext As IntPtr
  Public Property GrantedAccess As Integer
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires after a registry key is opened.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_AFTER_OPEN_KEY flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires.

The Status parameter contains a Win32 error code that indicates the outcome of the operation; 0 indicates success. This value is returned to the request originator if no other status is returned from this event. Applications may change this parameter's value if they want a different Win32 error code to be returned.

The KeyHandle parameter specifies a handle to a registry key that should be opened instead of the one this event fired for. Applications can set this parameter to redirect access to the registry key associated with the specified handle.

The KeyHandleContext parameter is a placeholder for application-defined data associated with the application-provided registry key handle. Please refer to the Contexts topic for more information.

The GrantedAccess parameter specifies the granted access rights for an application-provided registry key handle. Applications that set KeyHandle must also set this parameter. Please refer to Microsoft's Registry Key Security and Access Rights article for more information about possible values.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

AfterQueryKey Event (CBRegistry Component)

This event fires after a registry key's information is retrieved.

Syntax

public event OnAfterQueryKeyHandler OnAfterQueryKey;

public delegate void OnAfterQueryKeyHandler(object sender, CbregistryAfterQueryKeyEventArgs e);

public class CbregistryAfterQueryKeyEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public int Status { get; set; }
  public int ValidFields { get; }
  public DateTime LastWriteTime { get; set; }
  public string Name { get; set; }
  public string ClassName { get; set; }
  public int SubKeys { get; set; }
  public int MaxNameLength { get; set; }
  public int MaxClassNameLength { get; set; }
  public int Values { get; set; }
  public int MaxValueNameLength { get; set; }
  public int MaxValueDataSize { get; set; }
  public bool VirtualizationCandidate { get; set; }
  public bool VirtualizationEnabled { get; set; }
  public bool VirtualTarget { get; set; }
  public bool VirtualStore { get; set; }
  public bool VirtualSource { get; set; }
  public bool Processed { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnAfterQueryKey As OnAfterQueryKeyHandler

Public Delegate Sub OnAfterQueryKeyHandler(sender As Object, e As CbregistryAfterQueryKeyEventArgs)

Public Class CbregistryAfterQueryKeyEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public Property Status As Integer
  Public ReadOnly Property ValidFields As Integer
  Public Property LastWriteTime As DateTime
  Public Property Name As String
  Public Property ClassName As String
  Public Property SubKeys As Integer
  Public Property MaxNameLength As Integer
  Public Property MaxClassNameLength As Integer
  Public Property Values As Integer
  Public Property MaxValueNameLength As Integer
  Public Property MaxValueDataSize As Integer
  Public Property VirtualizationCandidate As Boolean
  Public Property VirtualizationEnabled As Boolean
  Public Property VirtualTarget As Boolean
  Public Property VirtualStore As Boolean
  Public Property VirtualSource As Boolean
  Public Property Processed As Boolean
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires after a registry key's information is retrieved.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_AFTER_QUERY_KEY flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires.

The Status parameter contains a Win32 error code that indicates the outcome of the operation; 0 indicates success. This value is returned to the request originator if no other status is returned from this event. Applications may change this parameter's value if they want a different Win32 error code to be returned.

The ValidFields parameter indicates which pieces of information about the key were retrieved. The value of this parameter is a combination of one or more of the following:

REG_KEYFIELD_LASTWRITETIME1A registry key's last write time.

REG_KEYFIELD_NAME2A registry key's name.

REG_KEYFIELD_MAXNAMELENGTH4A registry key's longest subkey name.

REG_KEYFIELD_CLASSNAME8A registry key's class name.

REG_KEYFIELD_MAXCLASSNAMELENGTH16A registry key's longest subkey class name.

REG_KEYFIELD_SUBKEYS32The number of subkeys a registry key has.

REG_KEYFIELD_VALUES64The number of values a registry key has.

REG_KEYFIELD_MAXVALUENAMELENGTH128A registry key's longest value name.

REG_KEYFIELD_MAXVALUEDATASIZE256A registry key's largest value data size.

REG_KEYFIELD_VIRTUALIZATIONINFO512A registry key's virtualization information.

The LastWriteTime parameter specifies when the key was last changed, specified in UTC.

The Name parameter specifies the key's name. The maximum length of a registry key name is 255 characters.

The ClassName parameter specifies the key's class name. The maximum length of a registry key class name is 255 characters.

The SubKeys parameter specifies the number of subkeys that the key has.

The MaxNameLength parameter specifies the length, in bytes, of the key's longest subkey name.

The MaxClassNameLength parameter specifies the length, in bytes, of the key's longest subkey class name.

The Values parameter specifies the number of values the key has.

The MaxValueNameLength parameter specifies the length, in bytes, of the key's longest value name.

The MaxValueDataSize parameter specifies the length, in bytes, of the subkey's largest value data size.

The VirtualizationCandidate parameter specifies whether the key is part of the virtualization namespace scope.

The VirtualizationEnabled parameter specifies whether virtualization is enabled on the key. This parameter can only be true if VirtualizationCandidate is true.

The VirtualTarget parameter specifies whether the key is a virtual key. This parameter can only be true if both VirtualizationCandidate and VirtualizationEnabled are both false. Its value is only valid on virtual store key handles.

The VirtualStore parameter specifies whether the key is part of the virtual store path.

The VirtualSource parameter specifies whether the key has ever been virtualized. This parameter can only be true if VirtualizationCandidate is true.

The Processed parameter indicates whether the response values have been modified. Applications must set this parameter to true if they have altered any of the parameters related to the response values.

Note: This parameter's value is ignored if an error is returned via ResultCode.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

AfterQueryValue Event (CBRegistry Component)

This event fires after a registry value's information is retrieved.

Syntax

public event OnAfterQueryValueHandler OnAfterQueryValue;

public delegate void OnAfterQueryValueHandler(object sender, CbregistryAfterQueryValueEventArgs e);

public class CbregistryAfterQueryValueEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public int Status { get; set; }
  public string ValueName { get; }
  public int ValidFields { get; }
  public int ValueType { get; set; }
  public long IntegerValue { get; set; }
  public string StringValue { get; set; }
  public IntPtr BinaryValue { get; }
  public int MaxBinaryValueSize { get; }
  public int BinaryValueSize { get; set; }
  public bool Processed { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnAfterQueryValue As OnAfterQueryValueHandler

Public Delegate Sub OnAfterQueryValueHandler(sender As Object, e As CbregistryAfterQueryValueEventArgs)

Public Class CbregistryAfterQueryValueEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public Property Status As Integer
  Public ReadOnly Property ValueName As String
  Public ReadOnly Property ValidFields As Integer
  Public Property ValueType As Integer
  Public Property IntegerValue As Long
  Public Property StringValue As String
  Public ReadOnly Property BinaryValue As IntPtr
  Public ReadOnly Property MaxBinaryValueSize As Integer
  Public Property BinaryValueSize As Integer
  Public Property Processed As Boolean
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires after a registry value's information is retrieved.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_AFTER_QUERY_VALUE flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires.

The Status parameter contains a Win32 error code that indicates the outcome of the operation; 0 indicates success. This value is returned to the request originator if no other status is returned from this event. Applications may change this parameter's value if they want a different Win32 error code to be returned.

The ValueName parameter reflects the name of the registry value.

The ValidFields parameter indicates which pieces of information about the registry value were retrieved. The value of this parameter is a combination of one or more of the following:

REG_VALUEFIELD_TYPE1A registry value's type.

REG_VALUEFIELD_NAME2A registry value's name.

REG_VALUEFIELD_DATA4A registry value's data.

The ValueType parameter specifies the registry value's type and determines which of the other parameters holds the registry value's data (please refer to their descriptions for more information). Possible values are as follows:

REG_VALUETYPE_SZ1A unicode string.

REG_VALUETYPE_EXPAND_SZ2A unicode string that contains environmental variable references.

REG_VALUETYPE_BINARY3Binary data.

REG_VALUETYPE_DWORD4A 32-bit number.

REG_VALUETYPE_MULTI_SZ7Multiple unicode strings.

REG_VALUETYPE_QWORD11A 64-bit number.

The IntegerValue parameter specifies the registry value's data if ValueType is REG_VALUETYPE_DWORD or REG_VALUETYPE_QWORD.

The StringValue parameter specifies the registry value's data if ValueType is REG_VALUETYPE_SZ, REG_VALUETYPE_EXPAND_SZ, or REG_VALUETYPE_MULTI_SZ.

For REG_VALUETYPE_MULTI_SZ, data are formatted as multiple individual ETB-terminated strings concatenated together into a single null-terminated string (where ETB is the End-of-Transmission-Block character; 23/0x17). For example, the strings This is, a multistring, and value. would be encoded as This is[ETB]a multistring[ETB]value.[ETB][NUL].

Note: As Microsoft's Registry Value Types article describes, the native multistring data format uses null terminators for the individual strings (e.g., This is[NUL]a multistring[NUL]value.[NUL][NUL]); CBRegistry converts the individual null terminators to/from ETB characters internally for applications' convenience.

The BinaryValue parameter points to a memory buffer that holds the registry value's data if ValueType is REG_VALUETYPE_BINARY. The MaxBinaryValueSize and BinaryValueSize parameter specify the capacity of the BinaryValue buffer and the length of the data it contains, respectively, in bytes.

Always check MaxBinaryValueSize before copying any data into the BinaryValue buffer. If the buffer is large enough to hold all of the data, copy the data into it, and then update BinaryValueSize accordingly. If the buffer is not large enough, do not copy any data into it; instead, set BinaryValueSize to the required buffer size (i.e., the size of the data) and return the ERROR_MORE_DATA (234) error code via ResultCode.

The Processed parameter indicates whether the response values have been modified. Applications must set this parameter to true if they have altered any of the parameters related to the response values.

Note: This parameter's value is ignored if an error is returned via ResultCode.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

AfterRenameKey Event (CBRegistry Component)

This event fires after a registry key is renamed.

Syntax

public event OnAfterRenameKeyHandler OnAfterRenameKey;

public delegate void OnAfterRenameKeyHandler(object sender, CbregistryAfterRenameKeyEventArgs e);

public class CbregistryAfterRenameKeyEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public int Status { get; set; }
  public bool Processed { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnAfterRenameKey As OnAfterRenameKeyHandler

Public Delegate Sub OnAfterRenameKeyHandler(sender As Object, e As CbregistryAfterRenameKeyEventArgs)

Public Class CbregistryAfterRenameKeyEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public Property Status As Integer
  Public Property Processed As Boolean
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires after a registry key is renamed.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_AFTER_RENAME_KEY flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's old or new names for performance reasons; applications that need them should store them in KeyContext during the BeforeCreateKey/BeforeOpenKey and BeforeRenameKey events so that they can be retrieved when this event fires.

The Status parameter contains a Win32 error code that indicates the outcome of the operation; 0 indicates success. This value is returned to the request originator if no other status is returned from this event. Applications may change this parameter's value if they want a different Win32 error code to be returned.

The Processed parameter indicates whether the response values have been modified. Applications must set this parameter to true if they have altered any of the parameters related to the response values.

Note: This parameter's value is ignored if an error is returned via ResultCode.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

AfterSetKey Event (CBRegistry Component)

This event fires after a registry key's information is updated.

Syntax

public event OnAfterSetKeyHandler OnAfterSetKey;

public delegate void OnAfterSetKeyHandler(object sender, CbregistryAfterSetKeyEventArgs e);

public class CbregistryAfterSetKeyEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public int Status { get; set; }
  public bool Processed { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnAfterSetKey As OnAfterSetKeyHandler

Public Delegate Sub OnAfterSetKeyHandler(sender As Object, e As CbregistryAfterSetKeyEventArgs)

Public Class CbregistryAfterSetKeyEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public Property Status As Integer
  Public Property Processed As Boolean
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires after a registry key's information is updated.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_AFTER_SET_KEY flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires.

The Status parameter contains a Win32 error code that indicates the outcome of the operation; 0 indicates success. This value is returned to the request originator if no other status is returned from this event. Applications may change this parameter's value if they want a different Win32 error code to be returned.

The Processed parameter indicates whether the response values have been modified. Applications must set this parameter to true if they have altered any of the parameters related to the response values.

Note: This parameter's value is ignored if an error is returned via ResultCode.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

AfterSetKeySecurity Event (CBRegistry Component)

This event fires after a registry key's security attributes are changed.

Syntax

public event OnAfterSetKeySecurityHandler OnAfterSetKeySecurity;

public delegate void OnAfterSetKeySecurityHandler(object sender, CbregistryAfterSetKeySecurityEventArgs e);

public class CbregistryAfterSetKeySecurityEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public int Status { get; set; }
  public int SecurityInformation { get; }
  public IntPtr SecurityDescriptor { get; }
  public int Length { get; }
  public bool Processed { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnAfterSetKeySecurity As OnAfterSetKeySecurityHandler

Public Delegate Sub OnAfterSetKeySecurityHandler(sender As Object, e As CbregistryAfterSetKeySecurityEventArgs)

Public Class CbregistryAfterSetKeySecurityEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public Property Status As Integer
  Public ReadOnly Property SecurityInformation As Integer
  Public ReadOnly Property SecurityDescriptor As IntPtr
  Public ReadOnly Property Length As Integer
  Public Property Processed As Boolean
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires after security attributes are changed for the registry key specified by KeyContext.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_AFTER_SET_KEY_SECURITY flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires.

The Status parameter contains a Win32 error code that indicates the outcome of the operation; 0 indicates success. This value is returned to the request originator if no other status is returned from this event. Applications may change this parameter's value if they want a different Win32 error code to be returned.

The SecurityInformation parameter reflects which pieces of security information, of those present in SecurityDescriptor, were to be set. Please refer to Microsoft's SECURITY_INFORMATION data type documentation for more information about possible values.

The SecurityDescriptor parameter points to a memory buffer that contains the new security information. The Length parameter reflects the length of this data, in bytes. Please see the Buffer Parameters topic for more information on how to work with memory buffer event parameters.

The data are formatted as a SECURITY_DESCRIPTOR structure in self-relative format; please refer to the Microsoft's documentation for more information.

The Processed parameter indicates whether the response values have been modified. Applications must set this parameter to true if they have altered any of the parameters related to the response values.

Note: This parameter's value is ignored if an error is returned via ResultCode.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

AfterSetValue Event (CBRegistry Component)

This event fires after a registry value is set or updated.

Syntax

public event OnAfterSetValueHandler OnAfterSetValue;

public delegate void OnAfterSetValueHandler(object sender, CbregistryAfterSetValueEventArgs e);

public class CbregistryAfterSetValueEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public int Status { get; set; }
  public bool Processed { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnAfterSetValue As OnAfterSetValueHandler

Public Delegate Sub OnAfterSetValueHandler(sender As Object, e As CbregistryAfterSetValueEventArgs)

Public Class CbregistryAfterSetValueEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public Property Status As Integer
  Public Property Processed As Boolean
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires after a registry value is set or updated.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_AFTER_SET_VALUE flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires. A similar strategy can be applied if the application needs the registry value's name, which can be stored in KeyContext during the corresponding Before* event.

The Status parameter contains a Win32 error code that indicates the outcome of the operation; 0 indicates success. This value is returned to the request originator if no other status is returned from this event. Applications may change this parameter's value if they want a different Win32 error code to be returned.

The Processed parameter indicates whether the response values have been modified. Applications must set this parameter to true if they have altered any of the parameters related to the response values.

Note: This parameter's value is ignored if an error is returned via ResultCode.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

BeforeCloseKey Event (CBRegistry Component)

This event fires before a registry key is closed.

Syntax

public event OnBeforeCloseKeyHandler OnBeforeCloseKey;

public delegate void OnBeforeCloseKeyHandler(object sender, CbregistryBeforeCloseKeyEventArgs e);

public class CbregistryBeforeCloseKeyEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnBeforeCloseKey As OnBeforeCloseKeyHandler

Public Delegate Sub OnBeforeCloseKeyHandler(sender As Object, e As CbregistryBeforeCloseKeyEventArgs)

Public Class CbregistryBeforeCloseKeyEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires before a registry key is closed.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_BEFORE_CLOSE_KEY flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

BeforeCreateKey Event (CBRegistry Component)

This event fires before a registry key is created.

Syntax

public event OnBeforeCreateKeyHandler OnBeforeCreateKey;

public delegate void OnBeforeCreateKeyHandler(object sender, CbregistryBeforeCreateKeyEventArgs e);

public class CbregistryBeforeCreateKeyEventArgs : EventArgs {
  public string FullName { get; }
  public int DesiredAccess { get; }
  public long KeyHandle { get; set; }
  public IntPtr KeyHandleContext { get; set; }
  public long GrantedAccess { get; set; }
  public IntPtr KeyContext { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnBeforeCreateKey As OnBeforeCreateKeyHandler

Public Delegate Sub OnBeforeCreateKeyHandler(sender As Object, e As CbregistryBeforeCreateKeyEventArgs)

Public Class CbregistryBeforeCreateKeyEventArgs Inherits EventArgs
  Public ReadOnly Property FullName As String
  Public ReadOnly Property DesiredAccess As Integer
  Public Property KeyHandle As Long
  Public Property KeyHandleContext As IntPtr
  Public Property GrantedAccess As Long
  Public Property KeyContext As IntPtr
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires before a registry key is created.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_BEFORE_CREATE_KEY flag.

The FullName parameter reflects the "full" name of the registry key being created, specified, by default, in system format (e.g., HKEY_LOCAL_MACHINE\System\... will be \Registry\Machine\System\...). If the ResolveNtNameToWin32Name configuration setting is enabled, the name will be converted to the more common Win32 format. Applications that intend to use the registry key's name during later events should store it in KeyContext during this event. Please refer to the Contexts topic for more information.

The DesiredAccess parameter reflects the access rights specified by the requestor. Please refer to Microsoft's Registry Key Security and Access Rights article for more information about possible values.

The KeyHandle parameter specifies a handle to a registry key that should be opened instead of the one this event fired for. Applications can set this parameter to redirect access to the registry key associated with the specified handle.

The KeyHandleContext parameter is a placeholder for application-defined data associated with the application-provided registry key handle. Please refer to the Contexts topic for more information.

The GrantedAccess parameter specifies the granted access rights for an application-provided registry key handle. Applications that set KeyHandle must also set this parameter. Please refer to Microsoft's Registry Key Security and Access Rights article for more information about possible values.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

BeforeDeleteKey Event (CBRegistry Component)

This event fires before a registry key is deleted.

Syntax

public event OnBeforeDeleteKeyHandler OnBeforeDeleteKey;

public delegate void OnBeforeDeleteKeyHandler(object sender, CbregistryBeforeDeleteKeyEventArgs e);

public class CbregistryBeforeDeleteKeyEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public bool Processed { get; set; }
  public bool FireAfterEvent { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnBeforeDeleteKey As OnBeforeDeleteKeyHandler

Public Delegate Sub OnBeforeDeleteKeyHandler(sender As Object, e As CbregistryBeforeDeleteKeyEventArgs)

Public Class CbregistryBeforeDeleteKeyEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public Property Processed As Boolean
  Public Property FireAfterEvent As Boolean
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires before a registry key is deleted.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_BEFORE_DELETE_KEY flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires.

The Processed parameter indicates whether the underlying request has been handled successfully. Applications should set this parameter to true if they have handled the request themselves (this will prevent the corresponding After* event from being called).

Note: This parameter's value is ignored if an error is returned via ResultCode.

The FireAfterEvent parameter specifies whether the corresponding After* event should be fired; it is true by default.

Note: Regardless of how this parameter is set, the corresponding After* event will not fire if Processed is true, or if an error code is returned via ResultCode.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

BeforeDeleteValue Event (CBRegistry Component)

This event fires before a registry value is deleted.

Syntax

public event OnBeforeDeleteValueHandler OnBeforeDeleteValue;

public delegate void OnBeforeDeleteValueHandler(object sender, CbregistryBeforeDeleteValueEventArgs e);

public class CbregistryBeforeDeleteValueEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public string ValueName { get; }
  public bool Processed { get; set; }
  public bool FireAfterEvent { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnBeforeDeleteValue As OnBeforeDeleteValueHandler

Public Delegate Sub OnBeforeDeleteValueHandler(sender As Object, e As CbregistryBeforeDeleteValueEventArgs)

Public Class CbregistryBeforeDeleteValueEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public ReadOnly Property ValueName As String
  Public Property Processed As Boolean
  Public Property FireAfterEvent As Boolean
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires before a registry value is deleted.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_BEFORE_DELETE_VALUE flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires.

The ValueName parameter reflects the name of the registry value. Applications that intend to use the registry value's name during later events should store it in KeyContext during this event. Please refer to the Contexts topic for more information.

The Processed parameter indicates whether the underlying request has been handled successfully. Applications should set this parameter to true if they have handled the request themselves (this will prevent the corresponding After* event from being called).

Note: This parameter's value is ignored if an error is returned via ResultCode.

The FireAfterEvent parameter specifies whether the corresponding After* event should be fired; it is true by default.

Note: Regardless of how this parameter is set, the corresponding After* event will not fire if Processed is true, or if an error code is returned via ResultCode.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

BeforeEnumerateKey Event (CBRegistry Component)

This event fires before a subkey's information is retrieved during key enumeration.

Syntax

public event OnBeforeEnumerateKeyHandler OnBeforeEnumerateKey;

public delegate void OnBeforeEnumerateKeyHandler(object sender, CbregistryBeforeEnumerateKeyEventArgs e);

public class CbregistryBeforeEnumerateKeyEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public int Index { get; }
  public int RequestedFields { get; }
  public DateTime LastWriteTime { get; set; }
  public string Name { get; set; }
  public string ClassName { get; set; }
  public int SubKeys { get; set; }
  public int MaxNameLength { get; set; }
  public int MaxClassNameLength { get; set; }
  public int Values { get; set; }
  public int MaxValueNameLength { get; set; }
  public int MaxValueDataSize { get; set; }
  public bool VirtualizationCandidate { get; set; }
  public bool VirtualizationEnabled { get; set; }
  public bool VirtualTarget { get; set; }
  public bool VirtualStore { get; set; }
  public bool VirtualSource { get; set; }
  public bool Processed { get; set; }
  public bool FireAfterEvent { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnBeforeEnumerateKey As OnBeforeEnumerateKeyHandler

Public Delegate Sub OnBeforeEnumerateKeyHandler(sender As Object, e As CbregistryBeforeEnumerateKeyEventArgs)

Public Class CbregistryBeforeEnumerateKeyEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public ReadOnly Property Index As Integer
  Public ReadOnly Property RequestedFields As Integer
  Public Property LastWriteTime As DateTime
  Public Property Name As String
  Public Property ClassName As String
  Public Property SubKeys As Integer
  Public Property MaxNameLength As Integer
  Public Property MaxClassNameLength As Integer
  Public Property Values As Integer
  Public Property MaxValueNameLength As Integer
  Public Property MaxValueDataSize As Integer
  Public Property VirtualizationCandidate As Boolean
  Public Property VirtualizationEnabled As Boolean
  Public Property VirtualTarget As Boolean
  Public Property VirtualStore As Boolean
  Public Property VirtualSource As Boolean
  Public Property Processed As Boolean
  Public Property FireAfterEvent As Boolean
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires before a subkey's information is retrieved during enumeration of a registry key's subkeys.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_BEFORE_ENUM_KEY flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires.

The Index parameter reflects the zero-based index of the key (within the registry key being enumerated).

The RequestedFields parameter indicates which pieces of information about the key were requested. The value of this parameter is a combination of one or more of the following:

REG_KEYFIELD_LASTWRITETIME1A registry key's last write time.

REG_KEYFIELD_NAME2A registry key's name.

REG_KEYFIELD_MAXNAMELENGTH4A registry key's longest subkey name.

REG_KEYFIELD_CLASSNAME8A registry key's class name.

REG_KEYFIELD_MAXCLASSNAMELENGTH16A registry key's longest subkey class name.

REG_KEYFIELD_SUBKEYS32The number of subkeys a registry key has.

REG_KEYFIELD_VALUES64The number of values a registry key has.

REG_KEYFIELD_MAXVALUENAMELENGTH128A registry key's longest value name.

REG_KEYFIELD_MAXVALUEDATASIZE256A registry key's largest value data size.

REG_KEYFIELD_VIRTUALIZATIONINFO512A registry key's virtualization information.

The LastWriteTime parameter specifies when the key was last changed, specified in UTC.

The Name parameter specifies the key's name. The maximum length of a registry key name is 255 characters.

The ClassName parameter specifies the key's class name. The maximum length of a registry key class name is 255 characters.

The SubKeys parameter specifies the number of subkeys that the key has.

The MaxNameLength parameter specifies the length, in bytes, of the key's longest subkey name.

The MaxClassNameLength parameter specifies the length, in bytes, of the key's longest subkey class name.

The Values parameter specifies the number of values the key has.

The MaxValueNameLength parameter specifies the length, in bytes, of the key's longest value name.

The MaxValueDataSize parameter specifies the length, in bytes, of the subkey's largest value data size.

The VirtualizationCandidate parameter specifies whether the key is part of the virtualization namespace scope.

The VirtualizationEnabled parameter specifies whether virtualization is enabled on the key. This parameter can only be true if VirtualizationCandidate is true.

The VirtualTarget parameter specifies whether the key is a virtual key. This parameter can only be true if both VirtualizationCandidate and VirtualizationEnabled are both false. Its value is only valid on virtual store key handles.

The VirtualStore parameter specifies whether the key is part of the virtual store path.

The VirtualSource parameter specifies whether the key has ever been virtualized. This parameter can only be true if VirtualizationCandidate is true.

The Processed parameter indicates whether the underlying request has been handled successfully. Applications should set this parameter to true if they have handled the request themselves (this will prevent the corresponding After* event from being called).

Note: This parameter's value is ignored if an error is returned via ResultCode.

The FireAfterEvent parameter specifies whether the corresponding After* event should be fired; it is true by default.

Note: Regardless of how this parameter is set, the corresponding After* event will not fire if Processed is true, or if an error code is returned via ResultCode.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

BeforeEnumerateValue Event (CBRegistry Component)

This event fires before a registry value's information is retrieved during key value enumeration.

Syntax

public event OnBeforeEnumerateValueHandler OnBeforeEnumerateValue;

public delegate void OnBeforeEnumerateValueHandler(object sender, CbregistryBeforeEnumerateValueEventArgs e);

public class CbregistryBeforeEnumerateValueEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public int Index { get; }
  public int RequestedFields { get; }
  public string ValueName { get; set; }
  public int ValueType { get; set; }
  public long IntegerValue { get; set; }
  public string StringValue { get; set; }
  public IntPtr BinaryValue { get; }
  public int MaxBinaryValueSize { get; }
  public int BinaryValueSize { get; set; }
  public bool Processed { get; set; }
  public bool FireAfterEvent { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnBeforeEnumerateValue As OnBeforeEnumerateValueHandler

Public Delegate Sub OnBeforeEnumerateValueHandler(sender As Object, e As CbregistryBeforeEnumerateValueEventArgs)

Public Class CbregistryBeforeEnumerateValueEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public ReadOnly Property Index As Integer
  Public ReadOnly Property RequestedFields As Integer
  Public Property ValueName As String
  Public Property ValueType As Integer
  Public Property IntegerValue As Long
  Public Property StringValue As String
  Public ReadOnly Property BinaryValue As IntPtr
  Public ReadOnly Property MaxBinaryValueSize As Integer
  Public Property BinaryValueSize As Integer
  Public Property Processed As Boolean
  Public Property FireAfterEvent As Boolean
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires before a registry value's information is retrieved during enumeration of a registry key's values.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_BEFORE_ENUM_VALUE flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires.

The Index parameter reflects the zero-based index of the registry value (within the registry key being enumerated).

The RequestedFields parameter indicates which pieces of information about the registry value were requested. The value of this parameter is a combination of one or more of the following:

REG_VALUEFIELD_TYPE1A registry value's type.

REG_VALUEFIELD_NAME2A registry value's name.

REG_VALUEFIELD_DATA4A registry value's data.

The ValueName parameter specifies the registry value's name.

The ValueType parameter specifies the registry value's type and determines which of the other parameters holds the registry value's data (please refer to their descriptions for more information). Possible values are as follows:

REG_VALUETYPE_SZ1A unicode string.

REG_VALUETYPE_EXPAND_SZ2A unicode string that contains environmental variable references.

REG_VALUETYPE_BINARY3Binary data.

REG_VALUETYPE_DWORD4A 32-bit number.

REG_VALUETYPE_MULTI_SZ7Multiple unicode strings.

REG_VALUETYPE_QWORD11A 64-bit number.

The IntegerValue parameter specifies the registry value's data if ValueType is REG_VALUETYPE_DWORD or REG_VALUETYPE_QWORD.

The StringValue parameter specifies the registry value's data if ValueType is REG_VALUETYPE_SZ, REG_VALUETYPE_EXPAND_SZ, or REG_VALUETYPE_MULTI_SZ.

For REG_VALUETYPE_MULTI_SZ, data are formatted as multiple individual ETB-terminated strings concatenated together into a single null-terminated string (where ETB is the End-of-Transmission-Block character; 23/0x17). For example, the strings This is, a multistring, and value. would be encoded as This is[ETB]a multistring[ETB]value.[ETB][NUL].

Note: As Microsoft's Registry Value Types article describes, the native multistring data format uses null terminators for the individual strings (e.g., This is[NUL]a multistring[NUL]value.[NUL][NUL]); CBRegistry converts the individual null terminators to/from ETB characters internally for applications' convenience.

The BinaryValue parameter points to a memory buffer that holds the registry value's data if ValueType is REG_VALUETYPE_BINARY. The MaxBinaryValueSize and BinaryValueSize parameter specify the capacity of the BinaryValue buffer and the length of the data it contains, respectively, in bytes.

Always check MaxBinaryValueSize before copying any data into the BinaryValue buffer. If the buffer is large enough to hold all of the data, copy the data into it, and then update BinaryValueSize accordingly. If the buffer is not large enough, do not copy any data into it; instead, set BinaryValueSize to the required buffer size (i.e., the size of the data) and return the ERROR_MORE_DATA (234) error code via ResultCode.

The Processed parameter indicates whether the underlying request has been handled successfully. Applications should set this parameter to true if they have handled the request themselves (this will prevent the corresponding After* event from being called).

Note: This parameter's value is ignored if an error is returned via ResultCode.

The FireAfterEvent parameter specifies whether the corresponding After* event should be fired; it is true by default.

Note: Regardless of how this parameter is set, the corresponding After* event will not fire if Processed is true, or if an error code is returned via ResultCode.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

BeforeGetKeySecurity Event (CBRegistry Component)

This event fires before a registry key's security attributes are retrieved.

Syntax

public event OnBeforeGetKeySecurityHandler OnBeforeGetKeySecurity;

public delegate void OnBeforeGetKeySecurityHandler(object sender, CbregistryBeforeGetKeySecurityEventArgs e);

public class CbregistryBeforeGetKeySecurityEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public int SecurityInformation { get; }
  public IntPtr SecurityDescriptor { get; }
  public int Length { get; }
  public int LengthNeeded { get; set; }
  public bool Processed { get; set; }
  public bool FireAfterEvent { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnBeforeGetKeySecurity As OnBeforeGetKeySecurityHandler

Public Delegate Sub OnBeforeGetKeySecurityHandler(sender As Object, e As CbregistryBeforeGetKeySecurityEventArgs)

Public Class CbregistryBeforeGetKeySecurityEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public ReadOnly Property SecurityInformation As Integer
  Public ReadOnly Property SecurityDescriptor As IntPtr
  Public ReadOnly Property Length As Integer
  Public Property LengthNeeded As Integer
  Public Property Processed As Boolean
  Public Property FireAfterEvent As Boolean
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires before security attributes are retrieved for the registry key specified by KeyContext.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_BEFORE_GET_KEY_SECURITY flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires.

The SecurityInformation parameter indicates which pieces of security information are requested. Please refer to Microsoft's SECURITY_INFORMATION data type documentation for more information about possible values.

The SecurityDescriptor parameter points to a memory buffer that receives the requested security information. The buffer referenced by the SecurityDescriptor parameter may be modified by the event handler if the operation is completed without passing it further to other filters and the filesystem driver. The Length parameter reflects the capacity of the SecurityDescriptor buffer, in bytes.

If the capacity reflected by the Length parameter is not sufficient to accommodate the security information, set LengthNeeded to the number of bytes necessary to hold the data, and return the ERROR_INSUFFICIENT_BUFFER error code via ResultCode.

Please see the Buffer Parameters topic for more information on how to work with memory buffer event parameters.

The returned data will be formatted as a SECURITY_DESCRIPTOR structure in self-relative format; please refer to the Microsoft's documentation for more information.

The Processed parameter indicates whether the underlying request has been handled successfully. Applications should set this parameter to true if they have handled the request themselves (this will prevent the corresponding After* event from being called).

Note: This parameter's value is ignored if an error is returned via ResultCode.

The FireAfterEvent parameter specifies whether the corresponding After* event should be fired; it is true by default.

Note: Regardless of how this parameter is set, the corresponding After* event will not fire if Processed is true, or if an error code is returned via ResultCode.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

BeforeOpenKey Event (CBRegistry Component)

This event fires before a registry key is opened.

Syntax

public event OnBeforeOpenKeyHandler OnBeforeOpenKey;

public delegate void OnBeforeOpenKeyHandler(object sender, CbregistryBeforeOpenKeyEventArgs e);

public class CbregistryBeforeOpenKeyEventArgs : EventArgs {
  public string FullName { get; }
  public int DesiredAccess { get; }
  public long KeyHandle { get; set; }
  public IntPtr KeyHandleContext { get; set; }
  public int GrantedAccess { get; set; }
  public IntPtr KeyContext { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnBeforeOpenKey As OnBeforeOpenKeyHandler

Public Delegate Sub OnBeforeOpenKeyHandler(sender As Object, e As CbregistryBeforeOpenKeyEventArgs)

Public Class CbregistryBeforeOpenKeyEventArgs Inherits EventArgs
  Public ReadOnly Property FullName As String
  Public ReadOnly Property DesiredAccess As Integer
  Public Property KeyHandle As Long
  Public Property KeyHandleContext As IntPtr
  Public Property GrantedAccess As Integer
  Public Property KeyContext As IntPtr
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires before a registry key is opened.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_BEFORE_OPEN_KEY flag.

The FullName parameter reflects the "full" name of the registry key being opened, specified, by default, in system format (e.g., HKEY_LOCAL_MACHINE\System\... will be \Registry\Machine\System\...). If the ResolveNtNameToWin32Name configuration setting is enabled, the name will be converted to the more common Win32 format. Applications that intend to use the registry key's name during later events should store it in KeyContext during this event. Please refer to the Contexts topic for more information.

The DesiredAccess parameter reflects the access rights specified by the requestor. Please refer to Microsoft's Registry Key Security and Access Rights article for more information about possible values.

The KeyHandle parameter specifies a handle to a registry key that should be opened instead of the one this event fired for. Applications can set this parameter to redirect access to the registry key associated with the specified handle.

The KeyHandleContext parameter is a placeholder for application-defined data associated with the application-provided registry key handle. Please refer to the Contexts topic for more information.

The GrantedAccess parameter specifies the granted access rights for an application-provided registry key handle. Applications that set KeyHandle must also set this parameter. Please refer to Microsoft's Registry Key Security and Access Rights article for more information about possible values.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

BeforeQueryKey Event (CBRegistry Component)

This event fires before a registry key's information is retrieved.

Syntax

public event OnBeforeQueryKeyHandler OnBeforeQueryKey;

public delegate void OnBeforeQueryKeyHandler(object sender, CbregistryBeforeQueryKeyEventArgs e);

public class CbregistryBeforeQueryKeyEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public int RequestedFields { get; }
  public DateTime LastWriteTime { get; set; }
  public string Name { get; set; }
  public string ClassName { get; set; }
  public int SubKeys { get; set; }
  public int MaxNameLength { get; set; }
  public int MaxClassNameLength { get; set; }
  public int Values { get; set; }
  public int MaxValueNameLength { get; set; }
  public int MaxValueDataSize { get; set; }
  public bool VirtualizationCandidate { get; set; }
  public bool VirtualizationEnabled { get; set; }
  public bool VirtualTarget { get; set; }
  public bool VirtualStore { get; set; }
  public bool VirtualSource { get; set; }
  public bool Processed { get; set; }
  public bool FireAfterEvent { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnBeforeQueryKey As OnBeforeQueryKeyHandler

Public Delegate Sub OnBeforeQueryKeyHandler(sender As Object, e As CbregistryBeforeQueryKeyEventArgs)

Public Class CbregistryBeforeQueryKeyEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public ReadOnly Property RequestedFields As Integer
  Public Property LastWriteTime As DateTime
  Public Property Name As String
  Public Property ClassName As String
  Public Property SubKeys As Integer
  Public Property MaxNameLength As Integer
  Public Property MaxClassNameLength As Integer
  Public Property Values As Integer
  Public Property MaxValueNameLength As Integer
  Public Property MaxValueDataSize As Integer
  Public Property VirtualizationCandidate As Boolean
  Public Property VirtualizationEnabled As Boolean
  Public Property VirtualTarget As Boolean
  Public Property VirtualStore As Boolean
  Public Property VirtualSource As Boolean
  Public Property Processed As Boolean
  Public Property FireAfterEvent As Boolean
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires before a registry key's information is retrieved.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_BEFORE_QUERY_KEY flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires.

The RequestedFields parameter indicates which pieces of information about the key were requested. The value of this parameter is a combination of one or more of the following:

REG_KEYFIELD_LASTWRITETIME1A registry key's last write time.

REG_KEYFIELD_NAME2A registry key's name.

REG_KEYFIELD_MAXNAMELENGTH4A registry key's longest subkey name.

REG_KEYFIELD_CLASSNAME8A registry key's class name.

REG_KEYFIELD_MAXCLASSNAMELENGTH16A registry key's longest subkey class name.

REG_KEYFIELD_SUBKEYS32The number of subkeys a registry key has.

REG_KEYFIELD_VALUES64The number of values a registry key has.

REG_KEYFIELD_MAXVALUENAMELENGTH128A registry key's longest value name.

REG_KEYFIELD_MAXVALUEDATASIZE256A registry key's largest value data size.

REG_KEYFIELD_VIRTUALIZATIONINFO512A registry key's virtualization information.

The LastWriteTime parameter specifies when the key was last changed, specified in UTC.

The Name parameter specifies the key's name. The maximum length of a registry key name is 255 characters.

The ClassName parameter specifies the key's class name. The maximum length of a registry key class name is 255 characters.

The SubKeys parameter specifies the number of subkeys that the key has.

The MaxNameLength parameter specifies the length, in bytes, of the key's longest subkey name.

The MaxClassNameLength parameter specifies the length, in bytes, of the key's longest subkey class name.

The Values parameter specifies the number of values the key has.

The MaxValueNameLength parameter specifies the length, in bytes, of the key's longest value name.

The MaxValueDataSize parameter specifies the length, in bytes, of the subkey's largest value data size.

The VirtualizationCandidate parameter specifies whether the key is part of the virtualization namespace scope.

The VirtualizationEnabled parameter specifies whether virtualization is enabled on the key. This parameter can only be true if VirtualizationCandidate is true.

The VirtualTarget parameter specifies whether the key is a virtual key. This parameter can only be true if both VirtualizationCandidate and VirtualizationEnabled are both false. Its value is only valid on virtual store key handles.

The VirtualStore parameter specifies whether the key is part of the virtual store path.

The VirtualSource parameter specifies whether the key has ever been virtualized. This parameter can only be true if VirtualizationCandidate is true.

The Processed parameter indicates whether the underlying request has been handled successfully. Applications should set this parameter to true if they have handled the request themselves (this will prevent the corresponding After* event from being called).

Note: This parameter's value is ignored if an error is returned via ResultCode.

The FireAfterEvent parameter specifies whether the corresponding After* event should be fired; it is true by default.

Note: Regardless of how this parameter is set, the corresponding After* event will not fire if Processed is true, or if an error code is returned via ResultCode.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

BeforeQueryValue Event (CBRegistry Component)

This event fires before a registry value's information is retrieved.

Syntax

public event OnBeforeQueryValueHandler OnBeforeQueryValue;

public delegate void OnBeforeQueryValueHandler(object sender, CbregistryBeforeQueryValueEventArgs e);

public class CbregistryBeforeQueryValueEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public string ValueName { get; }
  public int RequestedFields { get; }
  public int ValueType { get; set; }
  public long IntegerValue { get; set; }
  public string StringValue { get; set; }
  public IntPtr BinaryValue { get; }
  public int MaxBinaryValueSize { get; }
  public int BinaryValueSize { get; set; }
  public bool Processed { get; set; }
  public bool FireAfterEvent { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnBeforeQueryValue As OnBeforeQueryValueHandler

Public Delegate Sub OnBeforeQueryValueHandler(sender As Object, e As CbregistryBeforeQueryValueEventArgs)

Public Class CbregistryBeforeQueryValueEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public ReadOnly Property ValueName As String
  Public ReadOnly Property RequestedFields As Integer
  Public Property ValueType As Integer
  Public Property IntegerValue As Long
  Public Property StringValue As String
  Public ReadOnly Property BinaryValue As IntPtr
  Public ReadOnly Property MaxBinaryValueSize As Integer
  Public Property BinaryValueSize As Integer
  Public Property Processed As Boolean
  Public Property FireAfterEvent As Boolean
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires before a registry value's information is retrieved.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_BEFORE_QUERY_VALUE flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires.

The ValueName parameter reflects the name of the registry value.

The RequestedFields parameter indicates which pieces of information about the registry value were requested. The value of this parameter is a combination of one or more of the following:

REG_VALUEFIELD_TYPE1A registry value's type.

REG_VALUEFIELD_NAME2A registry value's name.

REG_VALUEFIELD_DATA4A registry value's data.

The ValueType parameter specifies the registry value's type and determines which of the other parameters holds the registry value's data (please refer to their descriptions for more information). Possible values are as follows:

REG_VALUETYPE_SZ1A unicode string.

REG_VALUETYPE_EXPAND_SZ2A unicode string that contains environmental variable references.

REG_VALUETYPE_BINARY3Binary data.

REG_VALUETYPE_DWORD4A 32-bit number.

REG_VALUETYPE_MULTI_SZ7Multiple unicode strings.

REG_VALUETYPE_QWORD11A 64-bit number.

The IntegerValue parameter specifies the registry value's data if ValueType is REG_VALUETYPE_DWORD or REG_VALUETYPE_QWORD.

The StringValue parameter specifies the registry value's data if ValueType is REG_VALUETYPE_SZ, REG_VALUETYPE_EXPAND_SZ, or REG_VALUETYPE_MULTI_SZ.

For REG_VALUETYPE_MULTI_SZ, data are formatted as multiple individual ETB-terminated strings concatenated together into a single null-terminated string (where ETB is the End-of-Transmission-Block character; 23/0x17). For example, the strings This is, a multistring, and value. would be encoded as This is[ETB]a multistring[ETB]value.[ETB][NUL].

Note: As Microsoft's Registry Value Types article describes, the native multistring data format uses null terminators for the individual strings (e.g., This is[NUL]a multistring[NUL]value.[NUL][NUL]); CBRegistry converts the individual null terminators to/from ETB characters internally for applications' convenience.

The BinaryValue parameter points to a memory buffer that holds the registry value's data if ValueType is REG_VALUETYPE_BINARY. The MaxBinaryValueSize and BinaryValueSize parameter specify the capacity of the BinaryValue buffer and the length of the data it contains, respectively, in bytes.

Always check MaxBinaryValueSize before copying any data into the BinaryValue buffer. If the buffer is large enough to hold all of the data, copy the data into it, and then update BinaryValueSize accordingly. If the buffer is not large enough, do not copy any data into it; instead, set BinaryValueSize to the required buffer size (i.e., the size of the data) and return the ERROR_MORE_DATA (234) error code via ResultCode.

The Processed parameter indicates whether the underlying request has been handled successfully. Applications should set this parameter to true if they have handled the request themselves (this will prevent the corresponding After* event from being called).

Note: This parameter's value is ignored if an error is returned via ResultCode.

The FireAfterEvent parameter specifies whether the corresponding After* event should be fired; it is true by default.

Note: Regardless of how this parameter is set, the corresponding After* event will not fire if Processed is true, or if an error code is returned via ResultCode.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

BeforeRenameKey Event (CBRegistry Component)

This event fires before a registry key is renamed.

Syntax

public event OnBeforeRenameKeyHandler OnBeforeRenameKey;

public delegate void OnBeforeRenameKeyHandler(object sender, CbregistryBeforeRenameKeyEventArgs e);

public class CbregistryBeforeRenameKeyEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public string NewName { get; }
  public bool Processed { get; set; }
  public bool FireAfterEvent { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnBeforeRenameKey As OnBeforeRenameKeyHandler

Public Delegate Sub OnBeforeRenameKeyHandler(sender As Object, e As CbregistryBeforeRenameKeyEventArgs)

Public Class CbregistryBeforeRenameKeyEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public ReadOnly Property NewName As String
  Public Property Processed As Boolean
  Public Property FireAfterEvent As Boolean
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires before a registry key is renamed.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_BEFORE_RENAME_KEY flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires.

The NewName parameter reflects the new name of the registry key. Applications that intend to use the new name during later events should store it in KeyContext during this event; please refer to the Contexts topic for more information.

The Processed parameter indicates whether the underlying request has been handled successfully. Applications should set this parameter to true if they have handled the request themselves (this will prevent the corresponding After* event from being called).

Note: This parameter's value is ignored if an error is returned via ResultCode.

The FireAfterEvent parameter specifies whether the corresponding After* event should be fired; it is true by default.

Note: Regardless of how this parameter is set, the corresponding After* event will not fire if Processed is true, or if an error code is returned via ResultCode.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

BeforeSetKey Event (CBRegistry Component)

This event fires before a registry key's information is updated.

Syntax

public event OnBeforeSetKeyHandler OnBeforeSetKey;

public delegate void OnBeforeSetKeyHandler(object sender, CbregistryBeforeSetKeyEventArgs e);

public class CbregistryBeforeSetKeyEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public DateTime LastWriteTime { get; }
  public bool Processed { get; set; }
  public bool FireAfterEvent { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnBeforeSetKey As OnBeforeSetKeyHandler

Public Delegate Sub OnBeforeSetKeyHandler(sender As Object, e As CbregistryBeforeSetKeyEventArgs)

Public Class CbregistryBeforeSetKeyEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public ReadOnly Property LastWriteTime As DateTime
  Public Property Processed As Boolean
  Public Property FireAfterEvent As Boolean
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires before a registry key's information is updated.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_BEFORE_SET_KEY flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires.

The LastWriteTime parameter reflects when the key was last changed, specified in UTC.

The Processed parameter indicates whether the underlying request has been handled successfully. Applications should set this parameter to true if they have handled the request themselves (this will prevent the corresponding After* event from being called).

Note: This parameter's value is ignored if an error is returned via ResultCode.

The FireAfterEvent parameter specifies whether the corresponding After* event should be fired; it is true by default.

Note: Regardless of how this parameter is set, the corresponding After* event will not fire if Processed is true, or if an error code is returned via ResultCode.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

BeforeSetKeySecurity Event (CBRegistry Component)

This event fires before a registry key's security attributes are changed.

Syntax

public event OnBeforeSetKeySecurityHandler OnBeforeSetKeySecurity;

public delegate void OnBeforeSetKeySecurityHandler(object sender, CbregistryBeforeSetKeySecurityEventArgs e);

public class CbregistryBeforeSetKeySecurityEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public int SecurityInformation { get; }
  public IntPtr SecurityDescriptor { get; }
  public int Length { get; }
  public bool Processed { get; set; }
  public bool FireAfterEvent { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnBeforeSetKeySecurity As OnBeforeSetKeySecurityHandler

Public Delegate Sub OnBeforeSetKeySecurityHandler(sender As Object, e As CbregistryBeforeSetKeySecurityEventArgs)

Public Class CbregistryBeforeSetKeySecurityEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public ReadOnly Property SecurityInformation As Integer
  Public ReadOnly Property SecurityDescriptor As IntPtr
  Public ReadOnly Property Length As Integer
  Public Property Processed As Boolean
  Public Property FireAfterEvent As Boolean
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires before security attributes are changed for the registry key specified by KeyContext.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_BEFORE_SET_KEY_SECURITY flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires.

The SecurityInformation parameter reflects which pieces of security information, of those present in SecurityDescriptor, will be set. Please refer to Microsoft's SECURITY_INFORMATION data type documentation for more information about possible values.

The SecurityDescriptor parameter points to a memory buffer that specifies the new security information. The buffer referenced by the SecurityDescriptor parameter may be modified when needed if the request is to be passed further to other filters and the filesystem driver. The Length parameter reflects the length of the data, in bytes. Please see the Buffer Parameters topic for more information on how to work with memory buffer event parameters.

The data are formatted as a SECURITY_DESCRIPTOR structure in self-relative format; please refer to the Microsoft's documentation for more information.

Please see the Buffer Parameters topic for more information on how to work with memory buffer event parameters.

The returned data will be formatted as a SECURITY_DESCRIPTOR structure in self-relative format; please refer to the Microsoft's documentation for more information.

The Processed parameter indicates whether the underlying request has been handled successfully. Applications should set this parameter to true if they have handled the request themselves (this will prevent the corresponding After* event from being called).

Note: This parameter's value is ignored if an error is returned via ResultCode.

The FireAfterEvent parameter specifies whether the corresponding After* event should be fired; it is true by default.

Note: Regardless of how this parameter is set, the corresponding After* event will not fire if Processed is true, or if an error code is returned via ResultCode.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

BeforeSetValue Event (CBRegistry Component)

This event fires before a registry value is set or updated.

Syntax

public event OnBeforeSetValueHandler OnBeforeSetValue;

public delegate void OnBeforeSetValueHandler(object sender, CbregistryBeforeSetValueEventArgs e);

public class CbregistryBeforeSetValueEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public string ValueName { get; }
  public int ValueType { get; }
  public long IntegerValue { get; }
  public string StringValue { get; }
  public IntPtr BinaryValue { get; }
  public int BinaryValueSize { get; }
  public bool Processed { get; set; }
  public bool FireAfterEvent { get; set; }
  public bool StopFiltering { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnBeforeSetValue As OnBeforeSetValueHandler

Public Delegate Sub OnBeforeSetValueHandler(sender As Object, e As CbregistryBeforeSetValueEventArgs)

Public Class CbregistryBeforeSetValueEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public ReadOnly Property ValueName As String
  Public ReadOnly Property ValueType As Integer
  Public ReadOnly Property IntegerValue As Long
  Public ReadOnly Property StringValue As String
  Public ReadOnly Property BinaryValue As IntPtr
  Public ReadOnly Property BinaryValueSize As Integer
  Public Property Processed As Boolean
  Public Property FireAfterEvent As Boolean
  Public Property StopFiltering As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires before a registry value is set or updated.

Applications need to handle this event only if they have added a standard filter rule that includes the REG_CE_BEFORE_SET_VALUE flag.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

Note: This event does not expose the registry key's name for performance reasons; applications that need it should store it in KeyContext during the BeforeCreateKey/BeforeOpenKey event so that it can be retrieved when this event fires.

The ValueName parameter reflects the name of the registry value. Applications that intend to use the registry value's name during later events should store it in KeyContext during this event. Please refer to the Contexts topic for more information.

The ValueType parameter reflects the registry value's type and determines which of the other parameters holds the registry value's data; please refer to their descriptions for more information. Possible values are as follows:

REG_VALUETYPE_SZ1A unicode string.

REG_VALUETYPE_EXPAND_SZ2A unicode string that contains environmental variable references.

REG_VALUETYPE_BINARY3Binary data.

REG_VALUETYPE_DWORD4A 32-bit number.

REG_VALUETYPE_MULTI_SZ7Multiple unicode strings.

REG_VALUETYPE_QWORD11A 64-bit number.

The IntegerValue parameter reflects the registry value's data if ValueType is REG_VALUETYPE_DWORD or REG_VALUETYPE_QWORD.

The StringValue parameter reflects the registry value's data if ValueType is REG_VALUETYPE_SZ, REG_VALUETYPE_EXPAND_SZ, or REG_VALUETYPE_MULTI_SZ.

For REG_VALUETYPE_MULTI_SZ, data are formatted as multiple individual ETB-terminated strings concatenated together into a single null-terminated string (where ETB is the End-of-Transmission-Block character; 23/0x17). For example, the strings This is, a multistring, and value. would be encoded as This is[ETB]a multistring[ETB]value.[ETB][NUL].

Note: As Microsoft's Registry Value Types article describes, the native multistring data format uses null terminators for the individual strings (e.g., This is[NUL]a multistring[NUL]value.[NUL][NUL]); CBRegistry converts the individual null terminators to/from ETB characters internally for applications' convenience.

The BinaryValue parameter points to a memory buffer that holds the registry value's data if ValueType is REG_VALUETYPE_BINARY. The BinaryValueSize parameter reflects the length of the data, in bytes.

The Processed parameter indicates whether the underlying request has been handled successfully. Applications should set this parameter to true if they have handled the request themselves (this will prevent the corresponding After* event from being called).

Note: This parameter's value is ignored if an error is returned via ResultCode.

The FireAfterEvent parameter specifies whether the corresponding After* event should be fired; it is true by default.

Note: Regardless of how this parameter is set, the corresponding After* event will not fire if Processed is true, or if an error code is returned via ResultCode.

The StopFiltering parameter specifies whether the component's system driver should ignore all further operations for the registry key; it is false by default. Applications may set this parameter to true to prevent any further events from firing for the registry key.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

CleanupKeyContext Event (CBRegistry Component)

This event fires when the application-defined data stored in a registry key context need to be cleaned up.

Syntax

public event OnCleanupKeyContextHandler OnCleanupKeyContext;

public delegate void OnCleanupKeyContextHandler(object sender, CbregistryCleanupKeyContextEventArgs e);

public class CbregistryCleanupKeyContextEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public int ResultCode { get; set; }
}
Public Event OnCleanupKeyContext As OnCleanupKeyContextHandler

Public Delegate Sub OnCleanupKeyContextHandler(sender As Object, e As CbregistryCleanupKeyContextEventArgs)

Public Class CbregistryCleanupKeyContextEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public Property ResultCode As Integer
End Class

Remarks

This event fires when the specified KeyContext is about to be discarded, giving applications a chance to clean up any information stored in it. Please refer to the Contexts topic for more information.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

CloseKeyHandle Event (CBRegistry Component)

This event fires when an application-provided registry key handle should be closed.

Syntax

public event OnCloseKeyHandleHandler OnCloseKeyHandle;

public delegate void OnCloseKeyHandleHandler(object sender, CbregistryCloseKeyHandleEventArgs e);

public class CbregistryCloseKeyHandleEventArgs : EventArgs {
  public IntPtr KeyContext { get; }
  public long KeyHandle { get; }
  public IntPtr KeyHandleContext { get; }
  public int Error { get; }
  public bool Processed { get; set; }
  public int ResultCode { get; set; }
}
Public Event OnCloseKeyHandle As OnCloseKeyHandleHandler

Public Delegate Sub OnCloseKeyHandleHandler(sender As Object, e As CbregistryCloseKeyHandleEventArgs)

Public Class CbregistryCloseKeyHandleEventArgs Inherits EventArgs
  Public ReadOnly Property KeyContext As IntPtr
  Public ReadOnly Property KeyHandle As Long
  Public ReadOnly Property KeyHandleContext As IntPtr
  Public ReadOnly Property Error As Integer
  Public Property Processed As Boolean
  Public Property ResultCode As Integer
End Class

Remarks

This event fires when the application-provided registry key handle, specified by KeyHandle, should be closed and the associated KeyHandleContext should be cleaned up.

The KeyContext parameter is a placeholder for application-defined data associated with the registry key. Please refer to the Contexts topic for more information.

The Error parameter reflects the error code of any error that occurred while using the application-provided key handle.

The Processed parameter indicates whether the application has processed the event and closed the key handle; it is false by default. If the application does not set this parameter to true, then the component will close the KeyHandle with the Windows API's RegCloseKey function when the event handler returns (unless an error code is returned via ResultCode).

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

Error Event (CBRegistry Component)

This event fires if an unhandled error occurs during an event.

Syntax

public event OnErrorHandler OnError;

public delegate void OnErrorHandler(object sender, CbregistryErrorEventArgs e);

public class CbregistryErrorEventArgs : EventArgs {
  public int ErrorCode { get; }
  public string Description { get; }
}
Public Event OnError As OnErrorHandler

Public Delegate Sub OnErrorHandler(sender As Object, e As CbregistryErrorEventArgs)

Public Class CbregistryErrorEventArgs Inherits EventArgs
  Public ReadOnly Property ErrorCode As Integer
  Public ReadOnly Property Description As String
End Class

Remarks

This event fires if an unhandled error occurs during another event. Developers can use this information to track down unhandled errors in an application's event handlers.

Note: Not everything is possible or allowed in the event handlers. For details, see the Recursive Calls topic.

WorkerThreadCreation Event (CBRegistry Component)

Fires just after a new worker thread is created.

Syntax

public event OnWorkerThreadCreationHandler OnWorkerThreadCreation;

public delegate void OnWorkerThreadCreationHandler(object sender, CbregistryWorkerThreadCreationEventArgs e);

public class CbregistryWorkerThreadCreationEventArgs : EventArgs {
  public int ResultCode { get; set; }
}
Public Event OnWorkerThreadCreation As OnWorkerThreadCreationHandler

Public Delegate Sub OnWorkerThreadCreationHandler(sender As Object, e As CbregistryWorkerThreadCreationEventArgs)

Public Class CbregistryWorkerThreadCreationEventArgs Inherits EventArgs
  Public Property ResultCode As Integer
End Class

Remarks

This event fires just after a worker thread is created, in the context of that worker thread.

This event is optional; it is provided to give applications a chance to perform additional processing when a new worker thread is created, such as allocating per-thread objects.

The component maintains a pool of worker threads and uses them to fire events; please refer to the Threading and Concurrency topic for more information.

The ResultCode parameter will always be 0 when the event is fired. If the event cannot be handled in a "successful" manner for some reason (e.g., a resource is not available or security checks failed), set it to a nonzero value to report an appropriate error. Please see the Error Reporting and Handling topic for more information.

This event is fired synchronously; please refer to the Event Types topic for more information.

WorkerThreadTermination Event (CBRegistry Component)

Fires just before a worker thread is terminated

Syntax

Remarks

This event fires just before a worker thread is terminated, in the context of that worker thread.

This event is optional; it is provided to give applications a chance to perform additional processing before a worker thread is terminated, such as deallocating per-thread objects.

The component maintains a pool of worker threads and uses them to fire events; please refer to the Threading and Concurrency topic for more information.

Any errors that occur during this event are ignored.

This event is fired synchronously; please refer to the Event Types topic for more information.

RegDefaultRule Type

This type represents a registry default rule.

Remarks

This type represents a registry default rule. Please refer to the Default Rules topic for more information.

Fields

AccessFlags
int (read-only)

Default Value: 0

This field indicates the access restrictions enforced by the rule.

This field indicates which access restrictions are enforced by the rule. The value of this field is a combination of zero or more of the following:

ACCESS_NONE0x00No access restrictions.

ACCESS_READ_ONLY0x01Read-only access; writing and deleting are prohibited.

ACCESS_WRITE_ONLY0x02Write-only access; reading and deleting are prohibited.

ACCESS_DELETE_PROTECT0x04Deleting and renaming are prohibited.

ACCESS_EXECUTE_PROTECT0x08Execution is prohibited.

ACCESS_NO_CHANGE_DAC0x10Change of security attributes is prohibited.

ACCESS_NO_CHANGE_OWNER0x20Change of owner is prohibited.

ACCESS_RENAME_PROTECT0x40Renaming is prohibited.

ACCESS_DELETE_ONLY_PROTECT0x80Deleting is prohibited (renaming is not affected).

ACCESS_REMOTE_ACCESS_PROTECT0x100Access from other systems is prohibited.

ACCESS_DENY_ALL0x200All access is denied.

ACCESS_ALL_FLAGS-1Used to denote all currently set access restriction flags.

Mask
string (read-only)

Default Value: ""

This field reflects a registry key mask that determines which registry keys match the rule.

This field reflects the registry key mask used to determine whether a registry key matches the rule. In addition to being its primary match qualifier, a rule's mask also serves as its identifier; every rule in a ruleset must have a unique mask.

RegFilterRule Type

This type represents a registry filter rule.

Remarks

This type represents a registry filter rule, which may be either a standard filter rule, an access rule, or a combination of both. Please refer to the File and Registry Filter Rules and Access Rules topics for more information.

Fields

AccessFlags
int (read-only)

Default Value: 0

This field indicates the access restrictions enforced by the rule.

This field indicates which access restrictions are enforced by the rule. The value of this field is a combination of zero or more of the following:

ACCESS_NONE0x00No access restrictions.

ACCESS_READ_ONLY0x01Read-only access; writing and deleting are prohibited.

ACCESS_WRITE_ONLY0x02Write-only access; reading and deleting are prohibited.

ACCESS_DELETE_PROTECT0x04Deleting and renaming are prohibited.

ACCESS_EXECUTE_PROTECT0x08Execution is prohibited.

ACCESS_NO_CHANGE_DAC0x10Change of security attributes is prohibited.

ACCESS_NO_CHANGE_OWNER0x20Change of owner is prohibited.

ACCESS_RENAME_PROTECT0x40Renaming is prohibited.

ACCESS_DELETE_ONLY_PROTECT0x80Deleting is prohibited (renaming is not affected).

ACCESS_REMOTE_ACCESS_PROTECT0x100Access from other systems is prohibited.

ACCESS_DENY_ALL0x200All access is denied.

ACCESS_ALL_FLAGS-1Used to denote all currently set access restriction flags.

ControlFlags
long (read-only)

Default Value: 0

This field indicates which control events the rule causes the component to fire.

This field indicates which registry operations, of those performed on matching registry keys, the component should fire Control Events for. The value of this field is a combination of zero or more of the following:

REG_CE_NONE0Don't fire for any registry operations.

Control Events will not fire for any registry operations.

REG_CE_BEFORE_CREATE_KEY0x00000001LFire before registry key creation operations.

The BeforeCreateKey event will fire anytime the OS attempts to create a registry key.

REG_CE_AFTER_CREATE_KEY0x00000002LFire after registry key creation operations.

The AfterCreateKey event will fire after a registry key creation request has been processed, before the response is returned.

REG_CE_BEFORE_OPEN_KEY0x00000004LFire before registry key open operations.

The BeforeOpenKey event will fire anytime the OS attempts to open a registry key.

REG_CE_AFTER_OPEN_KEY0x00000008LFire after registry key open operations.

The AfterOpenKey event will fire after a registry key open request has been processed, before the response is returned.

REG_CE_BEFORE_CLOSE_KEY0x00000010LFire before registry key close operations.

The BeforeCloseKey event will fire anytime the OS closes a registry key.

REG_CE_AFTER_CLOSE_KEY0x00000020LFire after registry key close operations.

The AfterCloseKey event will fire after a registry key close request has been processed, before the response is returned.

REG_CE_BEFORE_DELETE_KEY0x00000040LFire before registry key delete operations.

The BeforeDeleteKey event will fire anytime the OS attempts to delete a registry key.

REG_CE_AFTER_DELETE_KEY0x00000080LFire after registry key delete operations.

The AfterDeleteKey event will fire after a registry key delete request has been processed, before the response is returned.

REG_CE_BEFORE_RENAME_KEY0x00000100LFire before registry key rename operations.

The BeforeRenameKey event will fire anytime the OS attempts to rename a registry key.

REG_CE_AFTER_RENAME_KEY0x00000200LFire after registry key rename operations.

The AfterRenameKey event will fire after a registry key rename request has been processed, before the response is returned.

REG_CE_BEFORE_ENUM_KEY0x00000400LFire before subkey enumeration operations.

The BeforeEnumerateKey event will fire anytime the OS attempts to enumerate a registry key's subkeys.

REG_CE_AFTER_ENUM_KEY0x00000800LFire after subkey enumeration operations.

The AfterEnumerateKey event will fire after a subkey enumeration request has been processed, before the response is returned.

REG_CE_BEFORE_QUERY_KEY0x00001000LFire before registry key metadata retrieval operations.

The BeforeQueryKey event will fire anytime the OS attempts to retrieve a registry key's metadata.

REG_CE_AFTER_QUERY_KEY0x00002000LFire after registry key metadata retrieval operations.

The AfterQueryKey event will fire after a registry key metadata retrieval request has been processed, before the response is returned.

REG_CE_BEFORE_SET_KEY0x00004000LFire before registry key metadata update operations.

The BeforeSetKey event will fire anytime the OS attempts to update a registry key's metadata.

REG_CE_AFTER_SET_KEY0x00008000LFire after registry key metadata update operations.

The AfterSetKey event will fire after a registry key metadata update request has been processed, before the response is returned.

REG_CE_BEFORE_DELETE_VALUE0x00010000LFire before registry value delete operations.

The BeforeDeleteValue event will fire anytime the OS attempts to delete a registry value.

REG_CE_AFTER_DELETE_VALUE0x00020000LFire after registry value delete operations.

The AfterDeleteValue event will fire after a registry value delete request has been processed, before the response is returned.

REG_CE_BEFORE_ENUM_VALUE0x00040000LFire before value enumeration operations.

The BeforeEnumerateValue event will fire anytime the OS attempts to enumerate a registry key's values.

REG_CE_AFTER_ENUM_VALUE0x00080000LFire after value enumeration operations.

The AfterEnumerateValue event will fire after a value enumeration request has been processed, before the response is returned.

REG_CE_BEFORE_QUERY_VALUE0x00100000LFire before registry value query operations.

The BeforeQueryValue event will fire anytime the OS attempts to query a registry value.

REG_CE_AFTER_QUERY_VALUE0x00200000LFire after registry value query operations.

The AfterQueryValue event will fire after a registry value query request has been processed, before the response is returned.

REG_CE_BEFORE_SET_VALUE0x00400000LFire before registry value set/update operations.

The BeforeSetValue event will fire anytime the OS attempts to set or update a registry value.

REG_CE_AFTER_SET_VALUE0x00800000LFire after registry value set/update operations.

The AfterSetValue event will fire after a registry value set or update request has been processed, before the response is returned.

REG_CE_BEFORE_GET_KEY_SECURITY0x001000000LFire before get registry key security operations.

The BeforeGetKeySecurity event will fire before the OS queries the security attributes of a registry key.

REG_CE_AFTER_GET_KEY_SECURITY0x002000000LFire after registry value query operations.

The AfterGetKeySecurity event will fire after a get security operation has been processed, before the response is returned.

REG_CE_BEFORE_SET_KEY_SECURITY0x004000000LFire before registry value set/update operations.

The BeforeSetValue event will fire anytime the OS needs to change the security attributes of a registry key.

REG_CE_AFTER_SET_KEY_SECURITY0x008000000LFire after registry value set/update operations.

The AfterSetValue event will fire after a security attributes change request has been processed, before the response is returned.

REG_CE_ALL-1Fire for all registry operations.

Control Events will fire for all registry operations.

Mask
string (read-only)

Default Value: ""

This field reflects a registry key mask that determines which registry keys match the rule.

This field reflects the registry key mask used to determine whether a registry key matches the rule. In addition to being its primary match qualifier, a rule's mask also serves as its identifier; every rule in a ruleset must have a unique mask.

RegPassthroughRule Type

This type represents a registry passthrough rule.

Remarks

This type represents a registry passthrough rule. Please refer to the Passthrough Rules topic for more information.

Fields

AccessFlags
int (read-only)

Default Value: 0

This field indicates the access restrictions lifted by the rule.

This field indicates which access restrictions are lifted by the rule. The value of this field is a combination of zero or more of the following:

ACCESS_NONE0x00No access restrictions.

ACCESS_READ_ONLY0x01Read-only access; writing and deleting are prohibited.

ACCESS_WRITE_ONLY0x02Write-only access; reading and deleting are prohibited.

ACCESS_DELETE_PROTECT0x04Deleting and renaming are prohibited.

ACCESS_EXECUTE_PROTECT0x08Execution is prohibited.

ACCESS_NO_CHANGE_DAC0x10Change of security attributes is prohibited.

ACCESS_NO_CHANGE_OWNER0x20Change of owner is prohibited.

ACCESS_RENAME_PROTECT0x40Renaming is prohibited.

ACCESS_DELETE_ONLY_PROTECT0x80Deleting is prohibited (renaming is not affected).

ACCESS_REMOTE_ACCESS_PROTECT0x100Access from other systems is prohibited.

ACCESS_DENY_ALL0x200All access is denied.

ACCESS_ALL_FLAGS-1Used to denote all currently set access restriction flags.

ControlFlags
long (read-only)

Default Value: 0

This field indicates which control events the rule prevents the component from firing.

This field indicates which registry operations, of those performed on matching registry keys, the component should not fire Control Events for. The value of this field is a combination of zero or more of the following:

REG_CE_NONE0Don't fire for any registry operations.

Control Events will not fire for any registry operations.

REG_CE_BEFORE_CREATE_KEY0x00000001LFire before registry key creation operations.

The BeforeCreateKey event will fire anytime the OS attempts to create a registry key.

REG_CE_AFTER_CREATE_KEY0x00000002LFire after registry key creation operations.

The AfterCreateKey event will fire after a registry key creation request has been processed, before the response is returned.

REG_CE_BEFORE_OPEN_KEY0x00000004LFire before registry key open operations.

The BeforeOpenKey event will fire anytime the OS attempts to open a registry key.

REG_CE_AFTER_OPEN_KEY0x00000008LFire after registry key open operations.

The AfterOpenKey event will fire after a registry key open request has been processed, before the response is returned.

REG_CE_BEFORE_CLOSE_KEY0x00000010LFire before registry key close operations.

The BeforeCloseKey event will fire anytime the OS closes a registry key.

REG_CE_AFTER_CLOSE_KEY0x00000020LFire after registry key close operations.

The AfterCloseKey event will fire after a registry key close request has been processed, before the response is returned.

REG_CE_BEFORE_DELETE_KEY0x00000040LFire before registry key delete operations.

The BeforeDeleteKey event will fire anytime the OS attempts to delete a registry key.

REG_CE_AFTER_DELETE_KEY0x00000080LFire after registry key delete operations.

The AfterDeleteKey event will fire after a registry key delete request has been processed, before the response is returned.

REG_CE_BEFORE_RENAME_KEY0x00000100LFire before registry key rename operations.

The BeforeRenameKey event will fire anytime the OS attempts to rename a registry key.

REG_CE_AFTER_RENAME_KEY0x00000200LFire after registry key rename operations.

The AfterRenameKey event will fire after a registry key rename request has been processed, before the response is returned.

REG_CE_BEFORE_ENUM_KEY0x00000400LFire before subkey enumeration operations.

The BeforeEnumerateKey event will fire anytime the OS attempts to enumerate a registry key's subkeys.

REG_CE_AFTER_ENUM_KEY0x00000800LFire after subkey enumeration operations.

The AfterEnumerateKey event will fire after a subkey enumeration request has been processed, before the response is returned.

REG_CE_BEFORE_QUERY_KEY0x00001000LFire before registry key metadata retrieval operations.

The BeforeQueryKey event will fire anytime the OS attempts to retrieve a registry key's metadata.

REG_CE_AFTER_QUERY_KEY0x00002000LFire after registry key metadata retrieval operations.

The AfterQueryKey event will fire after a registry key metadata retrieval request has been processed, before the response is returned.

REG_CE_BEFORE_SET_KEY0x00004000LFire before registry key metadata update operations.

The BeforeSetKey event will fire anytime the OS attempts to update a registry key's metadata.

REG_CE_AFTER_SET_KEY0x00008000LFire after registry key metadata update operations.

The AfterSetKey event will fire after a registry key metadata update request has been processed, before the response is returned.

REG_CE_BEFORE_DELETE_VALUE0x00010000LFire before registry value delete operations.

The BeforeDeleteValue event will fire anytime the OS attempts to delete a registry value.

REG_CE_AFTER_DELETE_VALUE0x00020000LFire after registry value delete operations.

The AfterDeleteValue event will fire after a registry value delete request has been processed, before the response is returned.

REG_CE_BEFORE_ENUM_VALUE0x00040000LFire before value enumeration operations.

The BeforeEnumerateValue event will fire anytime the OS attempts to enumerate a registry key's values.

REG_CE_AFTER_ENUM_VALUE0x00080000LFire after value enumeration operations.

The AfterEnumerateValue event will fire after a value enumeration request has been processed, before the response is returned.

REG_CE_BEFORE_QUERY_VALUE0x00100000LFire before registry value query operations.

The BeforeQueryValue event will fire anytime the OS attempts to query a registry value.

REG_CE_AFTER_QUERY_VALUE0x00200000LFire after registry value query operations.

The AfterQueryValue event will fire after a registry value query request has been processed, before the response is returned.

REG_CE_BEFORE_SET_VALUE0x00400000LFire before registry value set/update operations.

The BeforeSetValue event will fire anytime the OS attempts to set or update a registry value.

REG_CE_AFTER_SET_VALUE0x00800000LFire after registry value set/update operations.

The AfterSetValue event will fire after a registry value set or update request has been processed, before the response is returned.

REG_CE_BEFORE_GET_KEY_SECURITY0x001000000LFire before get registry key security operations.

The BeforeGetKeySecurity event will fire before the OS queries the security attributes of a registry key.

REG_CE_AFTER_GET_KEY_SECURITY0x002000000LFire after registry value query operations.

The AfterGetKeySecurity event will fire after a get security operation has been processed, before the response is returned.

REG_CE_BEFORE_SET_KEY_SECURITY0x004000000LFire before registry value set/update operations.

The BeforeSetValue event will fire anytime the OS needs to change the security attributes of a registry key.

REG_CE_AFTER_SET_KEY_SECURITY0x008000000LFire after registry value set/update operations.

The AfterSetValue event will fire after a security attributes change request has been processed, before the response is returned.

REG_CE_ALL-1Fire for all registry operations.

Control Events will fire for all registry operations.

Mask
string (read-only)

Default Value: ""

This field reflects a registry key mask that determines which registry keys match the rule.

This field reflects the registry key mask used to determine whether a registry key matches the rule. In addition to being its primary match qualifier, a rule's mask also serves as its identifier; every rule in a ruleset must have a unique mask.

Config Settings (CBRegistry Component)

The component accepts one or more of the following configuration settings. Configuration settings are similar in functionality to properties, but they are rarely used. In order to avoid "polluting" the property namespace of the component, access to these internal properties is provided through the Config method.

CBRegistry Config Settings

FilterOwnRequests:   Whether the component's system driver should filter requests made by the application itself.

This configuration setting specifies whether requests made by the application should be filtered through the component's system driver (assuming that they match one of the rules present at the time). When this setting is disabled (default), and the application performs some operation that would match an existing rule, the driver will explicitly ignore it.

Normally, this setting should remain disabled (especially in production) to reduce the possibility of system deadlocks occurring. Certain situations, however, do require it to be enabled, such as for testing purposes (so that event handlers can be tested with single-process tests).

ForceAdminRightsForDefaultRules:   Specifies whether default rules can be added or deleted only by administrators.

This configuration setting specifies whether the access check must be performed when an attempt is made to add or delete a default rule.

By default, the setting is enabled and rules may be added and deleted only by administrators. If, however, an application uses default rules not for security-related purposes, and the risk of a limited user trying to add or remove the rules is low, such application may disable the setting.

Administrative rights are required to change this configuration setting after Initialize is called. If the user account of the process that calls Config does not have such rights, the call will fail with an ERROR_PRIVILEGE_NOT_HELD (0x0522) error.

ForceAppPermissionCheck:   Whether the driver should require the controller process to have elevated or system privileges.

This configuration setting corresponds to the INSTALL_FORCE_APP_PERMISSION_CHECK flag, which is used with the Install method; please refer to the documentation for both for more information. If this setting is enabled when Install is called, the aforementioned flag will be set automatically.

Administrative rights are required to change this configuration setting after Initialize is called. If the user account of the process that calls Config does not have such rights, the call will fail with an ERROR_PRIVILEGE_NOT_HELD (0x0522) error.

ForceSecurityChecks:   Whether the driver should prevent the controller process from filtering files that it would not normally have access to.

This configuration setting corresponds to the INSTALL_FORCE_SECURITY_CHECKS flag, which is used with the Install method; please refer to the documentation for both for more information. If this setting is enabled when Install is called, the aforementioned flag will be set automatically.

Administrative rights are required to change this configuration setting after Initialize is called. If the user account of the process that calls Config does not have such rights, the call will fail with an ERROR_PRIVILEGE_NOT_HELD (0x0522) error.

LoggingEnabled:   Whether extended logging is enabled.

This setting specifies whether extended logging is enabled for this component; it is disabled by default. Please refer to the Error Reporting and Handling topic for more information.

This setting's value is stored in the registry and is persistent; it requires administrative rights to be changed.

MaxWorkerThreadCount:   The maximum number of worker threads to use to fire events.

This setting specifies the maximum number of worker threads the component may create to fire events on when the SerializeEvents property is set to seOnMultipleThreads. (If other cases, this setting does not apply.)

By default, this setting is set to 0, and the driver automatically chooses an optimal number of threads using this equation: 4 * number_of_processors.

MinWorkerThreadCount:   The minimum number of worker threads to use to fire events.

This setting specifies the minimum number of worker threads the component should create to fire events on when the SerializeEvents property is set to seOnMultipleThreads. (In other cases, this setting does not apply.)

By default, this setting is set to 0, and the driver automatically chooses an optimal number of threads using this equation: max(number_of_processors, 4). If this setting's value exceeds the MaxWorkerThreadCount value, the latter is used instead.

ResolveNtNameToWin32Name:   Whether key names in NT native format are translated to common Win32 format.

This setting specifies whether NT native names (e.g., \Registry\Machine\...) should be translated to common Win32 format (e.g., HKY_LOCAL_MACHINE\...).

Note: Such translation is not always possible.

This setting is disabled by default.

Note: This setting cannot be changed when Active is true, and it cannot be changed within events.

WorkerInitialStackSize:   The initial stack size to create worker threads with.

This setting specifies the initial size of the stack each worker thread is created with. The system rounds this value to the nearest page.

By default, this setting is set to 0, and the driver uses a default stack size (currently, 1 MB).

Note: This setting cannot be changed when Active is true, and it cannot be changed within events.

Base Config Settings

BuildInfo:   Information about the product's build.

When queried, this setting will return a string containing information about the product's build.

LicenseInfo:   Information about the current license.

When queried, this setting will return a string containing information about the license this instance of a component is using. It will return the following information:

  • Product: The product the license is for.
  • Product Key: The key the license was generated from.
  • License Source: Where the license was found (e.g., RuntimeLicense, License File).
  • License Type: The type of license installed (e.g., Royalty Free, Single Server).

Trappable Errors (CBRegistry Component)

The component uses Windows error codes during operation as necessary. Please refer to the Error Reporting and Handling topic for more information.

Special Use Errors

21   ERROR_NOT_READY: Reported by the methods of the component if Initialize has not been called or did not succeed.
575   ERROR_APP_INIT_FAILURE: Reported by the methods of the component if Initialize has not been called or did not succeed. Differs from ERROR_NOT_READY (21) in that it indicates a specific situation in the internal code.
588   ERROR_FS_DRIVER_REQUIRED: Reported if the required system module was not correctly installed for the given ProductGUID.
614   ERROR_NO_CALLBACK_ACTIVE: Reported by any method that can only be called within event handlers if it is called outside an event handler.
1292   ERROR_IMPLEMENTATION_LIMIT: Reported when the timeout value provided is less than 3 seconds.
1314   ERROR_PRIVILEGE_NOT_HELD: Reported by any method that requires elevated permissions if it is called without such permissions.