C#:划词-外部程序获取IE页面选择文本

C#:划词-外部程序获取IE页面选择文本

   //using SHDocVw; 需要添加引用 COM:MicroSoft Internet Control

   //using mshtml; 需要添加引用 COM:MicroSoft HTML Object Libary

   //using System.Runtime.InteropServices;

   // 调用：textBox1.Text=GetSelectedIEtext();

   [DllImport("user32", EntryPoint="FindWindow")] 

   public static extern int FindWindowA(string lpClassName, string lpWindowName);

   /// <summary>

   /// 获取网页鼠标选择文本内容，只支持IE

   /// </summary>

   /// <returns></returns>

   public static string GetSelectedIEtext()

   {

    int ieHwnd=FindWindowA("IEFrame",null);

    IShellWindows sw=new ShellWindowsClass();

    string res=null;

    for (int i=sw.Count-1;i>=0;i--)

    {

     try

     {

      SHDocVw.IWebBrowser2 ib=sw.Item(i) as SHDocVw.IWebBrowser2;

      if(((SHDocVw.IWebBrowser2)sw.Item(i)).HWND==ieHwnd)

      {

       mshtml.IHTMLTxtRange txt=((HTMLDocumentClass)ib.Document).selection.createRange() as IHTMLTxtRange;

       res=txt.text;

       break;

      }

     }

     catch

     {

      res=null;

     }

    

    }

    return res;

   }