private static void WmGetMinMaxInfo(IntPtr hwnd, IntPtr lParam)
        {
            MainWindow.MINMAXINFO structure = (MainWindow.MINMAXINFO)Marshal.PtrToStructure(lParam, typeof(MainWindow.MINMAXINFO));
            MainWindow.POINT      pOINT     = new MainWindow.POINT();
            MainWindow.GetCursorPos(ref pOINT);
            IntPtr intPtr = MainWindow.MonitorFromPoint(pOINT, MainWindow.MonitorOptions.MONITOR_DEFAULTTONEAREST);

            if (intPtr != IntPtr.Zero)
            {
                MainWindow.MONITORINFO mONITORINFO = new MainWindow.MONITORINFO();
                MainWindow.GetMonitorInfo(intPtr, mONITORINFO);
                MainWindow.RECT rECT  = mONITORINFO.rcWork;
                MainWindow.RECT rECT1 = mONITORINFO.rcMonitor;
                structure.ptMaxPosition.x = Math.Abs(rECT.left - rECT1.left) - 7;
                structure.ptMaxPosition.y = Math.Abs(rECT.top - rECT1.top);
                structure.ptMaxSize.x     = Math.Abs(rECT.right - rECT.left) + 14;
                structure.ptMaxSize.y     = Math.Abs(rECT.bottom - rECT.top) + 7;
            }
            Marshal.StructureToPtr(structure, lParam, true);
        }
 private static extern bool GetMonitorInfo(IntPtr hMonitor, MainWindow.MONITORINFO lpmi);