TImageEnProc.OnProgress

Declaration

property OnProgress: TIEProgressEvent;

Description

Occurs whenever image processing operations are executed. If you use it to update a progress bar then you should reset it in the OnFinishWork event.
You can use ProgressTask to determine what action is underway.

To access processing progress for the Proc class of a TImageEnView, use the OnProgress event.

Examples

// Show progress display during processing operations
procedure TMainForm.ImageEnProc1Progress(Sender: TObject; per: Integer);
begin
  ProgressBar1.Position := per;
  ProgressBar1.Visible := True;
  Application.ProcessMessages;
end;

// Hide the progress bar
procedure TMainForm.ImageEnProc1FinishWork(Sender: TObject);
begin
  ProgressBar1.Visible := False;
end;

// Showing detailed progress display
procedure TMainForm.ImageEnProc1Progress(Sender: TObject; per: Integer);
begin
  case ImageEnProc1.ProgressTask of
    ietProcessing  : Caption := format( 'Processing - %d%%', [per] );
    ietAnalysis    : Caption := format( 'Analyzing - %d%%', [per] );
    ietResampling  : Caption := format( 'Resizing - %d%%', [per] );
    ietRotating    : Caption := format( 'Rotating - %d%%', [per] );
    else             Caption := format( 'Processing - %d%%', [per] );  // Should not occur
  end;
end;

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