C#通过WIN32API实现嵌入程序窗体

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本文实例讲述了C#通过WIN32 API实现嵌入程序窗体的方法，分享给大家供大家参考。具体如下：

这是一个不使用COM,而是通过WIN32 API实现的示例, 它把写字板程序嵌在了自己的一个面板中。

这么做可能没有实际意义, 因为两个程序之前没有进行有价值的交互, 这里仅仅是为了演示这么做到, 以下是详细注释过的主要源代码。

我们把它封装到一个类中:

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using System; 

using System.Collections.Generic; 

using System.Linq; 

using System.Text; 

using System.Diagnostics; 

using System.Runtime.InteropServices; 

using System.Windows.Forms; 

namespace System.Windows.Forms 
{ 

  class InsertWindow 

  { 

    /// <summary> 

    /// 将程序嵌入窗体 

    /// </summary> 

    /// <param name="pW">容器</param> 

    /// <param name="appname">程序名</param> 

    public InsertWindow(Panel pW,string appname) 

    { 

      this.pan = pW; 

      this.LoadEvent(appname); 

      pane(); 

    } 

    ~InsertWindow() 

    { 

      if (m_innerProcess!=null) 

      { 

        m_innerProcess.Dispose(); 

      } 

    } 

    #region 函数和变量声明 

    /* 

    * 声明 Win32 API 

    */

    [DllImport("user32.dll")] 

    static extern IntPtr SetParent(IntPtr hWndChild, 

      IntPtr hWndNewParent 

    ); 

    [DllImport("user32.dll")] 

    static extern Int32 GetWindowLong(IntPtr hWnd, 

      Int32 nIndex 

    ); 

    [DllImport("user32.dll")] 

    static extern Int32 SetWindowLong(IntPtr hWnd, 

      Int32 nIndex, 

      Int32 dwNewLong 

    ); 

    [DllImport("user32.dll")] 

    static extern Int32 SetWindowPos(IntPtr hWnd, 

      IntPtr hWndInsertAfter, 

      Int32 X, 

      Int32 Y, 

      Int32 cx, 

      Int32 cy, 

      UInt32 uFlags 

    ); 

    /* 

     * 定义 Win32 常数 

     */

    const Int32 GWL_STYLE = -16; 

    const Int32 WS_BORDER = (Int32)0x00800000L; 

    const Int32 WS_THICKFRAME = (Int32)0x00040000L; 

    const Int32 SWP_NOMOVE = 0x0002; 

    const Int32 SWP_NOSIZE = 0x0001; 

    const Int32 SWP_NOZORDER = 0x0004; 

    const Int32 SWP_FRAMECHANGED = 0x0020; 

    const Int32 SW_MAXIMIZE = 3; 

    IntPtr HWND_NOTOPMOST = new IntPtr(-2); 

    // 目标应用程序的进程. 

    Process m_innerProcess = null; 

    #endregion 

    #region 容器 

    private Panel pan = null; 

    public Panel panel1 

    { 

      set { pan = value; } 

      get { return pan; } 

    } 

    private void pane() 

    { 

      panel1.Anchor = AnchorStyles.Left | AnchorStyles.Top | 

       AnchorStyles.Right | AnchorStyles.Bottom; 

      panel1.Resize += new EventHandler(panel1_Resize); 

    } 

    private void panel1_Resize(object sender, EventArgs e) 

    { 

      // 设置目标应用程序的窗体样式. 

      IntPtr innerWnd = m_innerProcess.MainWindowHandle; 

      SetWindowPos(innerWnd, IntPtr.Zero, 0, 0, 

        panel1.ClientSize.Width, panel1.ClientSize.Height, 

        SWP_NOZORDER); 

    } 

    #endregion 

    #region 相应事件 

    private void LoadEvent(string appFile) 

    { 

      // 启动目标应用程序. 

      m_innerProcess = Process.Start(appFile); 

      m_innerProcess.StartInfo.WindowStyle = ProcessWindowStyle.Hidden; //隐藏 

      // 等待, 直到那个程序已经完全启动.  

      m_innerProcess.WaitForInputIdle(); 

      // 目标应用程序的主窗体. 

      IntPtr innerWnd = m_innerProcess.MainWindowHandle; 

      // 设置目标应用程序的主窗体的父亲(为我们的窗体). 

      SetParent(innerWnd, panel1.Handle); 

      // 除去窗体边框. 

      Int32 wndStyle = GetWindowLong(innerWnd, GWL_STYLE); 

      wndStyle &= ~WS_BORDER; 

      wndStyle &= ~WS_THICKFRAME; 

      SetWindowLong(innerWnd, GWL_STYLE, wndStyle); 

      SetWindowPos(innerWnd, IntPtr.Zero, 0, 0, 0, 0, 

        SWP_NOMOVE | SWP_NOSIZE | SWP_NOZORDER | SWP_FRAMECHANGED); 

      // 在Resize事件中更新目标应用程序的窗体尺寸. 

      panel1_Resize(panel1, null); 

    } 
#endregion

  }
}

然后在窗口的load事件中加入详细代码如下:

using System; 

using System.Collections.Generic; 

using System.ComponentModel; 

using System.Data; 

using System.Drawing; 

using System.Linq; 

using System.Text; 

using System.Windows.Forms; 

using System.Runtime; 

using System.Runtime.InteropServices; 

using System.Diagnostics; 

namespace 将程序窗口嵌入到任务栏中 
{ 

  public partial class Form1 : Form 

  { 

    private System.Windows.Forms.Panel panel1; 

    public Form1() 

    { 

      InitializeComponent(); 

      this.panel1 = new System.Windows.Forms.Panel(); 

      this.SuspendLayout(); 

      //  

      // panel1 

      //  

      this.panel1.Dock = System.Windows.Forms.DockStyle.Fill; 

      this.panel1.Location = new System.Drawing.Point(0, 0); 

      this.panel1.Name = "panel1"; 

      this.panel1.Size = new System.Drawing.Size(292, 273); 

      this.panel1.TabIndex = 0; 

      this.Controls.Add(this.panel1); 

      Load += new EventHandler(Form1_Load); 

    } 

    private void Form1_Load(object sender, EventArgs e) 

    { 

      //string sPath = Environment.GetEnvironmentVariable("windir");//获取系统变量 windir(windows)  

      const string appFile = 

        "C:\\Program Files\\Windows NT\\Accessories\\wordpad.exe"; 

      InsertWindow insertwin = new InsertWindow(panel1, appFile); 

    } 

  } 
}