Single File System: Virtual File System Delphi Library
for Archive / Backup with Transparent Compression and Strong Encryption
Occurs when a single file system is involved in a potentially slow process.
TSFSProgressEvent = procedure (Sender: TObject;PercentDone: Real; var Cancel: Boolean) of object;
property OnProgress: TSFSProgressEvent;
OnProgress occurs during such processes as reading, writing, repairing, importing, exporting and changing encryption. OnProgress allows applications to provide the user with feedback about the progress of the potentially slow process.
The PercentDone parameter is an approximation of how much of the operation has completed. Use PercentDone to update the position of a progress bar or other indicator.
The Cancel parameter is to be used when user requires a cancellation of the process.