C#通过WIN32 API实现嵌入程序窗体

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:

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);
    }
  }
}

希望本文所述对大家的C#程序设计有所帮助。