private const int SPI_GETWORKAREA = 0x0030;[DllImport("user32.dll")]private static extern bool SystemParametersInfo(int uAction, int uParam, out RECT lpRect, int fuWinIni);[StructLayout(LayoutKind.Sequential)]private struct RECT{    public int Left;    public int Top;    public int Right;    public int Bottom;}RECT workAreaRect;SystemParametersInfo(SPI_GETWORKAREA, 0, out workAreaRect, 0);