public static void getWindowMonitorSize( IntPtr hwnd, out int x, out int y, out int width, out int height )
{
IntPtr monitor = MonitorFromWindow(hwnd, MONITOR_DEFAULTTONEAREST);
MONITORINFO info = new MONITORINFO();
info.cbSize = Marshal.SizeOf(info);
GetMonitorInfo(monitor, ref info);
x = info.rcMonitor.X;
y = info.rcMonitor.Y;
width = info.rcMonitor.Width;
height = info.rcMonitor.Height;
}
static extern bool GetMonitorInfo(IntPtr hMonitor, ref MONITORINFO lpmi);
static extern bool GetMonitorInfo(IntPtr hMonitor, ref MONITORINFO lpmi);