Width := Rect.Right - Rect.Left;
     Height := Rect.Bottom - Rect.Top;
     if IsZoomed(AHandle) then
       begin
       CXS := GetSystemMetrics(SM_CXSIZEFRAME);
       CYS := GetSystemMetrics(SM_CYSIZEFRAME);
       Width := Width - (CXS * 2);
       Height := Height - (CYS * 2);
       end
     else
       begin
       CXS := 0;
       CYS := 0;
       end;

     fBitmap := NewDIBBitmap(Width, Height, pf32bit);
     Result := BitBlt(fBitmap.Canvas.Handle, 0, 0, Width, Height, DC, CXS, CYS, SRCCOPY);