示例#1
0
 static extern bool GetMonitorInfo(IntPtr hMonitor, MONITORINFO lpmi);
示例#2
0
        /// <summary>
        /// Get the min/max window size for this window
        /// Correctly accounting for the taskbar size and position
        /// </summary>
        /// <param name="hwnd"></param>
        /// <param name="lParam"></param>
        private void WmGetMinMaxInfo(System.IntPtr hwnd, System.IntPtr lParam)
        {
            // Get the point position to determine what screen we are on
            POINT lMousePosition;

            GetCursorPos(out lMousePosition);

            // Get the primary monitor at cursor position 0,0
            var lPrimaryScreen = MonitorFromPoint(new POINT(0, 0), MonitorOptions.MONITOR_DEFAULTTOPRIMARY);

            // Try and get the primary screen information
            var lPrimaryScreenInfo = new MONITORINFO();

            if (GetMonitorInfo(lPrimaryScreen, lPrimaryScreenInfo) == false)
            {
                return;
            }

            // Now get the current screen
            var lCurrentScreen = MonitorFromPoint(lMousePosition, MonitorOptions.MONITOR_DEFAULTTONEAREST);

            // If this has changed from the last one, update the transform
            if (lCurrentScreen != mLastScreen || mTransformToDevice == default(Matrix))
            {
                GetTransform();
            }

            // Store last know screen
            mLastScreen = lCurrentScreen;

            // Get min/max structure to fill with information
            var lMmi = (MINMAXINFO)Marshal.PtrToStructure(lParam, typeof(MINMAXINFO));

            // If it is the primary screen, use the rcWork variable
            if (lPrimaryScreen.Equals(lCurrentScreen) == true)
            {
                lMmi.ptMaxPosition.X = lPrimaryScreenInfo.rcWork.Left;
                lMmi.ptMaxPosition.Y = lPrimaryScreenInfo.rcWork.Top;
                lMmi.ptMaxSize.X     = lPrimaryScreenInfo.rcWork.Right - lPrimaryScreenInfo.rcWork.Left;
                lMmi.ptMaxSize.Y     = lPrimaryScreenInfo.rcWork.Bottom - lPrimaryScreenInfo.rcWork.Top;
            }
            // Otherwise it's the rcMonitor values
            else
            {
                lMmi.ptMaxPosition.X = lPrimaryScreenInfo.rcMonitor.Left;
                lMmi.ptMaxPosition.Y = lPrimaryScreenInfo.rcMonitor.Top;
                lMmi.ptMaxSize.X     = lPrimaryScreenInfo.rcMonitor.Right - lPrimaryScreenInfo.rcMonitor.Left;
                lMmi.ptMaxSize.Y     = lPrimaryScreenInfo.rcMonitor.Bottom - lPrimaryScreenInfo.rcMonitor.Top;
            }

            // Set min size
            var minSize = mTransformToDevice.Transform(new Point(mWindow.MinWidth, mWindow.MinHeight));

            lMmi.ptMinTrackSize.X = (int)minSize.X;
            lMmi.ptMinTrackSize.Y = (int)minSize.Y;

            // Store new size
            mScreenSize = new Rect(lMmi.ptMaxPosition.X, lMmi.ptMaxPosition.Y, lMmi.ptMaxSize.X, lMmi.ptMaxSize.Y);

            // Now we have the max size, allow the host to tweak as needed
            Marshal.StructureToPtr(lMmi, lParam, true);
        }