如何使在WPF窗口中运行的应用程序忽略点击或鼠标事件

Question

目前，我正在尝试在wpf窗口中运行虚幻的4应用程序。 但是我只希望用户看到该窗口而不单击它或使用它。 我为此尝试了各种变通办法，但似乎没有一个切实可行。 任何帮助将不胜感激。 谢谢。 下面是我用来在wpf窗口中运行应用程序的代码。

    [DllImport("user32.dll", EntryPoint="GetWindowThreadProcessId",  SetLastError=true,
         CharSet=CharSet.Unicode, ExactSpelling=true,
         CallingConvention=CallingConvention.StdCall)]
    private static extern long GetWindowThreadProcessId(long hWnd, long lpdwProcessId); 

    [DllImport("user32.dll", SetLastError=true)]
    private static extern IntPtr FindWindow (string lpClassName, string lpWindowName);

    [DllImport("user32.dll", SetLastError=true)]
    private static extern long SetParent (IntPtr hWndChild, IntPtr hWndNewParent);

    [DllImport("user32.dll", EntryPoint="GetWindowLongA", SetLastError=true)]
    private static extern long GetWindowLong (IntPtr hwnd, int nIndex);

    [DllImport("user32.dll", EntryPoint="SetWindowLongA", SetLastError=true)]
    public static extern int SetWindowLongA([System.Runtime.InteropServices.InAttribute()] System.IntPtr hWnd, int nIndex, int dwNewLong);

    [DllImport("user32.dll", SetLastError=true)]
    private static extern long SetWindowPos(IntPtr hwnd, long hWndInsertAfter, long x, long y, long cx, long cy, long wFlags);

    [DllImport("user32.dll", SetLastError=true)]
    private static extern bool MoveWindow(IntPtr hwnd, int x, int y, int cx, int cy, bool repaint);

    private const int SWP_NOOWNERZORDER = 0x200;
    private const int SWP_NOREDRAW = 0x8;
    private const int SWP_NOZORDER = 0x4;
    private const int SWP_SHOWWINDOW = 0x0040;
    private const int WS_EX_MDICHILD = 0x40;
    private const int SWP_FRAMECHANGED = 0x20;
    private const int SWP_NOACTIVATE = 0x10;
    private const int SWP_ASYNCWINDOWPOS = 0x4000;
    private const int SWP_NOMOVE = 0x2;
    private const int SWP_NOSIZE = 0x1;
    private const int GWL_STYLE = (-16);
    private const int WS_VISIBLE = 0x10000000;
    private const int WS_CHILD = 0x40000000;


    /// <summary>
    /// Force redraw of control when size changes
    /// </summary>
    /// <param name="e">Not used</param>
    protected void OnSizeChanged(object s, SizeChangedEventArgs e)
    {
        this.InvalidateVisual();

       this.Width =  WpfUserAppControl.Width = 200;
       this.Height =  WpfUserAppControl.Height = 200;

        //Application.Current.MainWindow.Width = Window.GetWindow(this.AppContainer).Width;


        MoveWindow(_appWin, 100, 100, (int)WpfUserAppControl.Height, (int)WpfUserAppControl.Width, true);
    }


    /// <summary>
    /// Create control when visibility changes
    /// </summary>
    /// <param name="e">Not used</param>
    protected void OnVisibleChanged(object s, RoutedEventArgs e)
    {
        // If control needs to be initialized/created
        if (_iscreated == false)
        {

            // Mark that control is created
            _iscreated = true;

            // Initialize handle value to invalid
            _appWin = IntPtr.Zero;

            try
            {
                var procInfo = new System.Diagnostics.ProcessStartInfo(this.exeName);
                procInfo.WorkingDirectory = System.IO.Path.GetDirectoryName(this.exeName);

                _childp = System.Diagnostics.Process.Start(procInfo);



                _childp.WaitForInputIdle();



                while (_childp.MainWindowHandle == IntPtr.Zero)
                {
                System.Threading.Thread.Sleep(10);

                }


                _appWin = _childp.MainWindowHandle;
            }
            catch (Exception ex)
            {
                Debug.Print(ex.Message + "Error");
            }

            // Put it into this form
            var helper = new WindowInteropHelper(Window.GetWindow(this.AppContainer));
            SetParent(_appWin, helper.Handle);
            AppControl.
            // Remove border and whatnot
           SetWindowLongA(_appWin, GWL_STYLE, WS_VISIBLE);

            // Move the window to overlay it on this window
            MoveWindow(_appWin, 100, 100, (int)WpfUserAppControl.Height, (int)WpfUserAppControl.Width, true);
           _childp.Exited += _childp_Exited;

           SetWindowPos(_appWin, -2, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOACTIVATE);
        }
    }

Answer 1

到目前为止，我发现的最佳解决方案是在加载透明的虚幻引擎之后运行另一个窗口应用程序。

Answer 2

使用UIElement基础对象中的IsHitTestVisible属性。 将False值设置为Window.IsHitTestVisible 。

IsHitTestVisible = "False"

希望对您有所帮助。