完美实现Wpf嵌套外部exe

using System; using System.Collections.Generic; using System.Linq; using System.Runtime.InteropServices; using System.Text; using System.Threading; using System.Threading.Tasks; using System.Windows.Controls; using System.Windows.Interop;  namespace WpfDisplayExe {     class EmbeddedApp : HwndHost, IKeyboardInputSink     {         [DllImport("user32.dll")]         private static extern int SetParent(IntPtr hWndChild, IntPtr hWndParent);         [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]         private static extern uint SetWindowLong(IntPtr hwnd, int nIndex, uint newLong);         [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]         private static extern uint GetWindowLong(IntPtr hwnd, int nIndex);         [DllImport("user32.dll")]         private static extern int EnumWindows(CallBackPtr callPtr, ref WindowInfo WndInfoRef);         [DllImport("User32.dll")]         static extern int GetWindowText(IntPtr handle, StringBuilder text, int MaxLen);         [DllImport("user32.dll")]         public static extern int GetWindowRect(IntPtr hwnd, ref RECT rc);         [DllImport("user32.dll", EntryPoint = "SendMessage", SetLastError = true, CharSet = CharSet.Auto)]         private static extern int SendMessage(IntPtr hwnd, uint wMsg, int wParam, int lParam); //对外部软件窗口发送一些消息(如 窗口最大化、最小化等)         internal const int             GWL_WNDPROC = (-4),             GWL_HINSTANCE = (-6),             GWL_HWNDPARENT = (-8),             GWL_STYLE = (-16),             GWL_EXSTYLE = (-20),             GWL_USERDATA = (-21),             GWL_ID = (-12);         internal const uint               WS_CHILD = 0x40000000,               WS_VISIBLE = 0x10000000,               LBS_NOTIFY = 0x00000001,               HOST_ID = 0x00000002,               LISTBOX_ID = 0x00000001,               WS_VSCROLL = 0x00200000,               WS_BORDER = 0x00800000,               WS_POPUP = 0x80000000;         private const int HWND_TOP = 0x0;         private const int WM_COMMAND = 0x0112;         private const int WM_QT_PAINT = 0xC2DC;         private const int WM_PAINT = 0x000F;         private const int WM_SIZE = 0x0005;         private const int SWP_FRAMECHANGED = 0x0020;         private const int WM_SYSCOMMAND = 0x0112;         private const int SC_CLOSE = 0xF060;         private const int SC_MINIMIZE = 0xF020;         private const int SC_MAXIMIZE = 0xF030;         private const uint WM_LBUTTONDOWN = 0x0201;         private const uint WM_LBUTTONUP = 0x0202;         private const int BM_CLICK = 0xF5;          private Border WndHoster;         private double screenW, screenH;         private System.Diagnostics.Process appProc;         private uint oldStyle;         public IntPtr hwndHost;         private String appPath;         public EmbeddedApp(Border b, double sW, double sH, String p, String f)         {             WndHoster = b;             screenH = sH;             screenW = sW;             appPath = p;             WinInfo = new WindowInfo();             WinInfo.winTitle = f;         }         protected override HandleRef BuildWindowCore(HandleRef hwndParent)         {             hwndHost = FindTheWindow();             //if (hwndHost == null)                //{                appProc = new System.Diagnostics.Process();             appProc.StartInfo.FileName = appPath;             appProc.Start();             hwndHost = FindTheWindow();             SendMessage(hwndHost, WM_SYSCOMMAND, SC_MINIMIZE, 0);             //}                // 嵌入在HwnHost中的窗口必须要 设置为WS_CHILD风格                 oldStyle = GetWindowLong(hwndHost, GWL_STYLE);             uint newStyle = oldStyle;             //WS_CHILD和WS_POPUP不能同时存在。有些Win32窗口，比如QQ的窗口，有WS_POPUP属性，这样嵌入的时候会导致程序错误                newStyle |= WS_CHILD;             newStyle &= ~WS_POPUP;             newStyle &= ~WS_BORDER;             SetWindowLong(hwndHost, GWL_STYLE, newStyle);             //将窗口居中，实际上是将窗口的容器居中                RePosWindow(WndHoster, WndHoster.Width, WndHoster.Height);              //将netterm的父窗口设置为HwndHost                 SetParent(hwndHost, hwndParent.Handle);             return new HandleRef(this, hwndHost);         }         protected override void DestroyWindowCore(System.Runtime.InteropServices.HandleRef hwnd)         {             SetWindowLong(hwndHost, GWL_STYLE, oldStyle);             SetParent(hwndHost, (IntPtr)0);             appProc.Kill();             appProc.Close();         }          [StructLayout(LayoutKind.Sequential)]         public struct RECT         {             public int left;             public int top;             public int right;             public int bottom;         }         [StructLayout(LayoutKind.Sequential)]         public struct WindowInfo         {             public String winTitle;             public RECT r;             public IntPtr hwnd;         }         public delegate bool CallBackPtr(IntPtr hwnd, ref WindowInfo WndInfoRef);         private static CallBackPtr callBackPtr;         private WindowInfo WinInfo;         public static bool CallBackProc(IntPtr hwnd, ref WindowInfo WndInfoRef)         {             StringBuilder str = new StringBuilder(512);             GetWindowText(hwnd, str, str.Capacity);             Console.WriteLine(str.ToString());             if (str.ToString().IndexOf(WndInfoRef.winTitle, 0) >= 0)             {                 WndInfoRef.hwnd = hwnd;                 GetWindowRect(hwnd, ref (WndInfoRef.r));             }              return true;         }         public IntPtr FindTheWindow()         {             callBackPtr = new CallBackPtr(CallBackProc);             EnumWindows(callBackPtr, ref WinInfo);             return WinInfo.hwnd;         }         public void RePosWindow(Border b, double screenW, double screenH)         {             double width = WinInfo.r.right - WinInfo.r.left;             double height = WinInfo.r.bottom - WinInfo.r.top;              double left = (screenW - width) / 2;             double right = (screenW - width) / 2;             double top = (screenH - height) / 2;             double bottom = (screenH - height) / 2;              //b.Margin = new Thickness(left, top, right, bottom);         }     } }

public MainWindow()         {             InitializeComponent();             //加载.exe文件                         String path = @"D:VLCvlc.exe"; //VusionDTI  ImAgenGine_MRDP             EmbeddedApp ea = new EmbeddedApp(asd, 100, 100, path, "VLC media player");             asd.Child = ea;         }