Article #17818: How can I draw directly on the Windows Desktop?

 Question and Answer Database
FAQ2818D.txt How can I draw directly on the Windows Desktop?
Category :Windows API
Platform :All
Product :All 32 bit
Question:
How can I draw directly on the Windows Desktop?
Answer:
The following example uses the dc returned from GetDc(0)
with the Windows API drawing functions to draw on the
Windows Desktop.
Example:
procedure TForm1.Button1Click(Sender: TObject);
var
dc : hdc;
begin
dc := GetDc(0);
MoveToEx(Dc, 0, 0, nil);
LineTo(Dc, 300, 300);
ReleaseDc(0, Dc);
end;
7/16/98 4:31:28 PM

Last Modified: 01-SEP-99