将外部应用程序嵌入WinForm中

转自：http://blog.csdn.net/llddyy123wq/article/details/5624625

如何用C# WinFrom程序将其他程序激活并让其他程序作为他的子窗体。比如他开个主窗体可以把QQ，游戏什么的作为他的子窗体显示出来？这个问题我在网上看到很多人都提过。但真正解决问题的很难找到。后来终于在网上找到了一个相关方面的知识。我早把这个资源上传到我的下载文件中去了。但是我感觉这样的话，别人搜索到的机率还是很小。所以我现在再不厌其烦的，把代码再贴出来吧，方便大家共同学习。

需要Process.Start()启动外部应用。  
还要FindWindow,SetParent等几个API。  
C#调用请看  
http://www.pinvoke.net/search.aspx?search=FindWindow&namespace=[All] 

这个控件封装好了。 

 using System;
 using System.Collections;
 using System.ComponentModel;
 using System.Diagnostics;
 using System.Drawing;
 using System.Data;
 using System.Windows.Forms;
 using System.Runtime.InteropServices;

 namespace AppControl
 {

     /// <summary>
     /// Application Display Control
     /// </summary>
     [
     ToolboxBitmap(typeof(ApplicationControl), "AppControl.bmp"),
     ]
     public class ApplicationControl : System.Windows.Forms.Panel
     {

         /// <summary>
         /// Track if the application has been created
         /// </summary>
         bool created = false;

         /// <summary>
         /// Handle to the application Window
         /// </summary>
         IntPtr appWin;

         /// <summary>
         /// The name of the exe to launch
         /// </summary>
         private string exeName = "";

         /// <summary>
         /// Get/Set if we draw the tick marks
         /// </summary>
         [
         Category("Data"),
         Description("Name of the executable to launch"),
         DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)
         ]
         public string ExeName
         {
             get
             {
                 return exeName;
             }
             set
             {
                 exeName = value;
             }
         }


         /// <summary>
         /// Constructor
         /// </summary>
         public ApplicationControl()
         {
         }


         [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)]
         private static extern long SetWindowLong(IntPtr hwnd, int nIndex, long 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);

         [DllImport("user32.dll", EntryPoint = "PostMessageA", SetLastError = true)]
         private static extern bool PostMessage(IntPtr hwnd, uint Msg, long wParam, long lParam);

         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 WM_CLOSE = 0x10;
         private const int WS_CHILD = 0x40000000;

         /// <summary>
         /// Force redraw of control when size changes
         /// </summary>
         /// <param name="e">Not used</param>
         protected override void OnSizeChanged(EventArgs e)
         {
             this.Invalidate();
             base.OnSizeChanged(e);
         }


         /// <summary>
         /// Creeate control when visibility changes
         /// </summary>
         /// <param name="e">Not used</param>
         protected override void OnVisibleChanged(EventArgs e)
         {

             // If control needs to be initialized/created
             if (created == false)
             {

                 // Mark that control is created
                 created = true;

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

                 // Start the remote application
                 Process p = null;
                 try
                 {

                     // Start the process
                     p = System.Diagnostics.Process.Start(this.exeName);

                     // Wait for process to be created and enter idle condition
                     p.WaitForInputIdle();

                     // Get the main handle
                     appWin = p.MainWindowHandle;
                 }
                 catch (Exception ex)
                 {
                     MessageBox.Show(this, ex.Message, "Error");
                 }

                 // Put it into this form
                 SetParent(appWin, this.Handle);

                 // Remove border and whatnot
                 SetWindowLong(appWin, GWL_STYLE, WS_VISIBLE);

                 // Move the window to overlay it on this window
                 MoveWindow(appWin, 0, 0, this.Width, this.Height, true);

             }

             base.OnVisibleChanged(e);
         }


         /// <summary>
         ///
         /// </summary>
         /// <param name="e"></param>
         protected override void OnHandleDestroyed(EventArgs e)
         {
             // Stop the application
             if (appWin != IntPtr.Zero)
             {

                 // Post a colse message
                 PostMessage(appWin, WM_CLOSE, 0, 0);

                 // Delay for it to get the message
                 System.Threading.Thread.Sleep(1000);

                 // Clear internal handle
                 appWin = IntPtr.Zero;

             }

             base.OnHandleDestroyed(e);
         }


         /// <summary>
         /// Update display of the executable
         /// </summary>
         /// <param name="e">Not used</param>
         protected override void OnResize(EventArgs e)
         {
             if (this.appWin != IntPtr.Zero)
             {
                 MoveWindow(appWin, 0, 0, this.Width, this.Height, true);
             }
             base.OnResize(e);
         }


     }


 }

调用方法 （其实就是把上面生成的控件直接拖放到窗体，改一下路径等相关属性就可以了。）

 this.applicationControl1 = new AppControl.ApplicationControl();
 this.SuspendLayout();
 //
 // applicationControl1
 //
 this.applicationControl1.Anchor = ((System.Windows.Forms.AnchorStyles) ((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
             | System.Windows.Forms.AnchorStyles.Left)
             | System.Windows.Forms.AnchorStyles.Right)));
 this.applicationControl1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
 // 在这里设置要嵌入的程序路径，我试验了灵格斯翻译专家成功，QQ没试，据说不成功，我不清楚呵呵。）
 this.applicationControl1.ExeName = @"f:/EditPlus/EDITPLUS.EXE";
 //this.applicationControl1.ExeName = @"f:/Tencent/QQ/QQ.exe";//QQ的没成功
 this.applicationControl1.Location = new System.Drawing.Point(29, 26);
 this.applicationControl1.Name = "applicationControl1";
 this.applicationControl1.Size = new System.Drawing.Size(230, 195);
 this.applicationControl1.TabIndex = 0;

特别申明：本文纯属个人在网上搜索所得。感谢原文网址（ http://www.chenjiliang.com/Article/View.aspx?ArticleID=2103）

运行效果见图片