CBFS Filter 2020 C++ Builder Edition

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NotifyUnlockSingle Event

Fires when a particular locked byte range in a file has been unlocked.

Syntax

typedef struct {
  String FileName;
  __int64 Offset;
  __int64 Length;
  __int64 Key;
  int Status;
  int ResultCode;
} TcbfCBFilterNotifyUnlockSingleEventParams;

typedef void __fastcall (__closure *TcbfCBFilterNotifyUnlockSingleEvent)(System::TObject* Sender, TcbfCBFilterNotifyUnlockSingleEventParams *e);

__property TcbfCBFilterNotifyUnlockSingleEvent OnNotifyUnlockSingle = { read=FOnNotifyUnlockSingle, write=FOnNotifyUnlockSingle };

Remarks

This event fires when a particular locked byte range in the file specified by FileName has been unlocked.

Applications only need to handle this event if they've added a standard filter rule that includes the FS_NE_LOCK_CONTROL flag.

The Offset, Length, and Key parameters contain the starting byte offset, length, and key values (respectively) specified when the byte range was locked. Please refer to the NotifyLock event's documentation for more information.

The Status parameter contains an NT status code that indicates the outcome of the operation; 0 indicates success. To convert this value to a Win32 error code, call the NtStatusToWin32Error method. Please note that this event won't fire for failed requests unless the ProcessFailedRequests property is enabled.

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, set it to a non-zero value to report an appropriate error. Note, however, that this event fires after the operation has already completed, so reporting an error won't actually affect the operation itself. Please refer to the Error Reporting and Handling topic for more information.

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

 
 
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CBFS Filter 2020 C++ Builder Edition - Version 20.0 [Build 7543]