FilePasswordNeeded Event

Fires if a password is needed to open an encrypted file.


class CBDriveFilePasswordNeededEventParams {
  const QString &FileName();
  const QString &Password();
  bool SetPassword(const QString &lpPassword);
  int ResultCode();
  void SetResultCode(int iResultCode);
  int EventRetVal();
  void SetEventRetVal(int iRetVal);
// To handle, connect one or more slots to this signal. void FilePasswordNeeded(CBDriveFilePasswordNeededEventParams *e);
// Or, subclass CBDrive and override this emitter function. virtual int FireFilePasswordNeeded(CBDriveFilePasswordNeededEventParams *e) {...}


This event fires when the encrypted file specified by FileName is being opened if a valid password has not been provided (either directly, or via the DefaultFilePassword property or CacheFilePassword method). This event will not fire if a valid password has already been provided, or if the file specified by FileName does not exist in the vault.

To allow access to the specified file, set the Password parameter to the correct password. The parameter's setter function will return false if the specified value is too long.

To prevent access to the specified file, return the CBFSSTORAGE_ERR_INVALID_PASSWORD error code via ResultCode.

Note that this event can be fired on different threads, and possibly even on several threads concurrently. As an alternative to handling this event, applications can provide a default file encryption password using the DefaultFilePassword property, and/or call the CacheFilePassword method (before a file is opened) to specify a one-time-use password.

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 isn't available, security checks failed, etc.), set it to a non-zero value to report an appropriate error. Please refer to the Error Reporting and Handling topic for more information.

Copyright (c) 2020 Callback Technologies, Inc. - All rights reserved.
CBFS Storage 2020 Qt Edition - Version 20.0 [Build 7649]