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Date Posted: 05:39:57 06/16/01 Sat
Author: wto
Subject: How to abort the Transform process?

Currently I use the following code to do a image format transform:
BitmapGraphic := TBitmapGraphic.Create;
BitmapGraphic.Assign(MyBitmap);
labStatus.Caption := 'Reduce colors...';
Transform := TImageFormatTransform.Create;
try
Transform.ImageFormat := ifColor256;
Transform.Quantize := True;
Transform.Dither := True;
Transform.OnProgress := ReduceColorProgress;
Transform.Apply(BitmapGraphic);
finally
Transform.Free;
end;
And in the on progress event:
procedure TLogoForm.ReduceColorProgress(const Sender: TObject; const PercentProgress: Byte);
begin
Progress.Position := PercentProgress + 1;
Application.ProcessMessages;
end;

where Progress is a TProgressBar.
In some cases, user may click close button on the dialog
and the form will close while still in transform process,
so I want to abort the transform when I received a FormClose
event, how should I do?

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