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Categories / Delphi / VCL

 

Drawing transparent text onto a tbitmap

Question: How can I draw transparent text on a TBitmap? Answer: The following example demonstrates drawing transparent text on the canvas of a TBitmap. Example: procedure TForm1.Button1Click(Sender: TObject); var OldBkMode : integer; begin Image1.Picture.Bitmap.Canvas.Font.Color := clBlue; OldBkMode := SetBkMode(Image1.Picture.Bitmap.Canvas.Handle, TRANSPARENT); Image1.Picture.Bitmap.Canvas.TextOut(10, 10, 'Hello'); SetBkMode(Image1.Picture.Bitmap.Canvas.Handle, OldBkMode); end;