Title: Getting the size of the desktop
Question: How do I find the size of the Desktop minus the taskbar?
Answer:
Call the Windows API function SystemParametersInfo passing
the SPI_GETWORKAREA parameter along with the address of the rectangle
structure to receive the coordinates.
Example:
procedure TForm1.Button1Click(Sender: TObject);
var
hRect : TRect;
begin
SystemParametersInfo(SPI_GETWORKAREA,0,@hRect, 0);
ShowMessage(IntToStr(hRect.Top)
+ ' ' + IntToStr(hRect.Left)
+ ' ' + IntToStr(hRect.Bottom)
+ ' ' + IntToStr(hRect.Right));
end;