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。