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Class: none
Declaration: TOnCheckAbortEvent = procedure (Sender: TObject; var Abort: boolean) of object;

The TOnCheckAbortEvent can be used to abort a time-consuming process. The parameter Abort has to be set TRUE in order to abort the particular process. The following routines trigger an OnCheckAbort event:

Hint: In order to be able to abort a time-consuming operation, Windows has to get control over the application. Thus it is necessary to implement a feedback routine which contains at least the statement "Application.ProcessMessages;". The OnCheckAbort event handler is a perfect place to do so.

Last Update: 2012-Oct-20