Graphic Delphi

Title: How to get a form as bitmap and copy it into the clipboard/ save it to a file
procedure TForm1.Button1Click(Sender: TObject);
var
imgWindow: TBitmap;
begin
imgWindow := GetFormImage;
try
Clipboard.Assign(imgWindow);
finally
imgWindow.Free;
end;
end;
// Save the bitmap to a file
// Das Bitmap in einer Datei speichern:
procedure TForm1.Button2Click(Sender: TObject);
var
imgWindow: TBitmap;
begin
imgWindow := TBitmap.Create;
try
imgWindow := Form1.GetFormImage;
imgWindow.SaveToFile('c:\FormImage.bmp');
finally
imgWindow.Free;
end;
end;