WPF嵌入Unity3D之后，unity3D程序的键盘和鼠标事件无法触发（3D程序的焦点无法激活）的解决方案

            //
            开启3D进程
            internal
            void Create3DProcess(string processUri)
        {
            if (string.IsNullOrWhiteSpace(processUri) || !File.Exists(processUri))
            {
                return;
                //throw new Exception("Unable to find Unity window,File was not exit");            }
            var handle = Panel.Handle;
            this.Dispatcher.InvokeAsync(() =>
            {
                try
                {
                  
                    //判断当前要启动的进程是否还在启动，如果还在启动，先关闭进程再创建进程                    CheckProcessByName(processUri);

                    if (process != null)
                    {
                        process.Close();
                    }
                 
                    process = new Process();             
                    process.StartInfo.Arguments = "-parentHWND " + handle.ToInt32() + "" + Environment.CommandLine + "" + Unity3DProcessArges.Replace("AutoWidth",Panel.Width.ToString()).Replace("AutoHeight",Panel.Height.ToString());
                    process.StartInfo.FileName = processUri;
                    process.StartInfo.WorkingDirectory = System.IO.Path.GetDirectoryName(processUri);
                    process.StartInfo.UseShellExecute = true;
                    process.StartInfo.CreateNoWindow = true;
                    process.Start();
                    process.WaitForInputIdle();
                    EnumChildWindows(handle, WindowEnum, IntPtr.Zero);
                }
                catch (Exception ex)
                {
                    LogHelper.Error(ex.ToString());
                }
            });

        }


  [DllImport("user32.dll")]
        publicstaticexternbool EnumChildWindows(IntPtr hwnd, WindowEnumProc func, IntPtr lParam);

             1
            private IntPtr unityHWND = IntPtr.Zero; //3D窗体的句柄 2///<summary> 3/// 发送消息，触发激活当前窗体
 4///</summary> 5internalvoid ActiveWindows()
 6        {
 7 8if (unityHWND!=IntPtr.Zero)
 9            {
10                SendMessage(unityHWND, WM_ACTIVATE, WA_ACTIVE, IntPtr.Zero);
11            }
12        }
1314///<summary>15/// 解除激活窗体
16///</summary>17internalvoid UnActiveWindows()
18        {
19if (unityHWND!=IntPtr.Zero)
20            {
21                SendMessage(unityHWND, WM_ACTIVATE, WA_INACTIVE, IntPtr.Zero);
22            }
23        }
242526//检测窗体句柄27privatevoid CheckWindowsActive()
28        {
29             actionTime = new DispatcherTimer();
30             actionTime.Interval = new TimeSpan(TimeSpan.TicksPerMillisecond * 300);
31             actionTime.Tick += ActionTime_Tick;
32            actionTime.Start();
33        }
3435         IntPtr lastIntprt = IntPtr.Zero; //获取上一次的鼠标指向的句柄,为了指向相同的位置，避免重复给窗体发送消息36privatevoid ActionTime_Tick(object sender, EventArgs e)
37        {
38try39            {
40                POINT pOINT;
41bool isSuccess = GetCursorPos(out pOINT);
42var intptr = WindowFromPoint(pOINT);
43if (isSuccess && unityHWND != IntPtr.Zero && lastIntprt != intptr)//判断当前句柄跟上一次的句柄是否一样，如果一样就不再触发44                {
45if (intptr == unityHWND)
46                    {
47                        ActiveWindows();
48                    }
49else50                    {
51                        UnActiveWindows();
52                    }
5354                }
55                 lastIntprt = intptr;
5657            }
58catch (Exception ex)
59            {
60                LogHelper.Error(ex.ToString());
61            }
62        }
6364         [DllImport("user32.dll", CharSet = CharSet.Auto)]
65publicstaticextern IntPtr SendMessage(IntPtr hWnd, UInt32 Msg, IntPtr wParam, IntPtr lParam);
6667         [DllImport("user32.dll", CharSet = CharSet.Auto)]
68publicstaticexternbool GetCursorPos(out POINT pt);
6970         [DllImport("user32.dll")]
71publicstaticextern IntPtr WindowFromPoint(POINT Point);
7273publicstruct POINT
74        {
75publicint X;
76publicint Y;
77public POINT(int x, int y)
78            {
79this.X = x;
80this.Y = y;
81            }
82         }