private void Grid_PreviewTouchDown(object sender, System.Windows.Input.TouchEventArgs e)
        {
            if (e.IsDoubleTap(this, ref _lastTapLocation, _doubleTapStopwatch))
            {
                SendMessage(0xFFFF, 0x112, 0xF170, 2);
            }

            //SendMessage(HWND_BROADCAST, WM_SYSCOMMAND, SC_MONITORPOWER, 2)
        }