Answer:
Capture a screen to a bitmap can be very simple. Just copy the bellow function and put in your program.
function CaptureScreen:TBitmap;
var
DC : HDC;
ABitmap:TBitmap;
begin
DC := GetDC (GetDesktopWindow);
ABitmap:=TBitmap.Create;
try
ABitmap.Width := GetDeviceCaps (DC, HORZRES);
ABitmap.Height := GetDeviceCaps (DC, VERTRES);
BitBlt(ABitmap.Canvas.Handle, 0, 0, ABitmap.Width,
ABitmap.Height,DC, 0, 0, SRCCOPY);
finally
ReleaseDC (GetDesktopWindow, DC);
end;
Result:=ABitmap;
end;
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