Article #16818: StretchDraw on an icon

 Question and Answer Database
FAQ1818D.txt StretchDraw on an icon
Category :VCL
Platform :All
Product :All 32 bit
Question:
When I attempt to use the TCanvas.StretchDraw method to draw a
zoomed view of an Icon, the size does not change. How can I
get around this?
Answer:
Icons always draw at the system default icon size. To display a
zoomed view of an icon image, copy the icon image to a bitmap,
then use the TCanvas.StretchDraw method.
Example:
procedure TForm1.Button1Click(Sender: TObject);
var
TheBitmap : TBitmap;
begin
TheBitmap := TBitmap.Create;
TheBitmap.Width := Application.Icon.Width;
TheBitmap.Height := Application.Icon.Height;
TheBitmap.Canvas.Draw(0, 0, Application.Icon);
Form1.Canvas.StretchDraw(Rect(0,
0,
TheBitmap.Width * 3,
TheBitmap.Height * 3),
TheBitmap);
TheBitmap.Free;
end;
7/16/98 4:31:28 PM

Last Modified: 01-SEP-99