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
r : TRect;
begin
SystemParametersInfo(SPI_GETWORKAREA,
0,
@r,
0);
Memo1.Lines.Add(IntToStr(r.Top));
Memo1.Lines.Add(IntToStr(r.Left));
Memo1.Lines.Add(IntToStr(r.Bottom));
Memo1.Lines.Add(IntToStr(r.Right));
end;