bho注册问题

joanarc82 2012-06-18 05:03:14

自己照着网上的文档做了个bho，注册的时候一直出现这个问题
类型“bho”具有多个COM注册函数

代码如下

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using SHDocVw;

using mshtml;

using System.Runtime.InteropServices;

using Microsoft.Win32;



namespace BHO_Gyc.BHO

{

        [   

            ComVisible(true), 

            Guid("8a194578-81ea-4850-9911-13ba2d71efbd"),

            ClassInterface(ClassInterfaceType.None)

        ]

    public class BHO:IObjectWithSite

    {

        WebBrowser webBrowser;

        HTMLDocument document;

     public void OnDocumentComplete(object pDisp,ref object URL)

     {

         //string url = URL as string;

         //object anObject = new object();

         //if (url.IndexOf("about:blank") >= 0)

         //{

         //    return;

         //}

         //if (url.IndexOf("baidu.com") >= 0)

         //{

         //    webBrowser.Navigate("http://www.sohu.com", ref anObject, ref anObject, ref anObject, ref anObject);

         //}

         try

         {

             document = (HTMLDocument)webBrowser.Document;

             foreach (IHTMLInputElement tempElement in document.getElementsByTagName("INPUT"))

             {

                 System.Windows.Forms.MessageBox.Show(tempElement.name != null ? tempElement.name : "it sucks,no name,try id" + ((IHTMLElement)tempElement).id);

             }

         }

         catch(Exception e)

         {

             System.Windows.Forms.MessageBox.Show(e.Message);

         }

     }

     public int SetSite(object site)

     {

         if (site != null)

         {

             webBrowser = (WebBrowser)site;

             webBrowser.DocumentComplete += new DWebBrowserEvents2_DocumentCompleteEventHandler(this.OnDocumentComplete);

         }

         else

         {

             webBrowser.DocumentComplete += new DWebBrowserEvents2_DocumentCompleteEventHandler(this.OnDocumentComplete);

             webBrowser = null;

         }

         return 0;

     }

     public int GetSite(ref Guid guid, out IntPtr ppvsite)

     {

         IntPtr punk = Marshal.GetIUnknownForObject(webBrowser);

         int hr = Marshal.QueryInterface(punk, ref guid, out ppvsite);

         Marshal.Release(punk);

         return hr;

     }

     public static string BHOKEYNAME = "SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Browser Helper Objects";

     [ComRegisterFunction]

     public static void RegisterBHO(Type type)

     {

         try

         {

             RegistryKey registryKey = Registry.LocalMachine.OpenSubKey(BHOKEYNAME, true);

             if (registryKey == null)

             {

                 registryKey = Registry.LocalMachine.CreateSubKey(BHOKEYNAME);

             }

             string guid = type.GUID.ToString("B");

             RegistryKey ourkey = registryKey.OpenSubKey(guid);

             if (ourkey == null)

             {

                 ourkey = registryKey.CreateSubKey(guid);

             }

             ourkey.SetValue("Alright", 1);

             registryKey.Close();

             ourkey.Close();

         }

         catch (Exception e)

         {

             System.Windows.Forms.MessageBox.Show(e.Message+"1");

         }

     }

     [ComRegisterFunction]

     public static void UnregisterBHO(Type type)

     {

         RegistryKey registryKey = Registry.LocalMachine.OpenSubKey(BHOKEYNAME, true);

         string guid = type.GUID.ToString("B");

         if (registryKey != null)

         {

             registryKey.DeleteSubKey(guid,false);

         }

     }

    }

}

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Runtime.InteropServices;



namespace BHO_Gyc

{

    [

           ComVisible(true),

           InterfaceType(ComInterfaceType.InterfaceIsIUnknown),

           Guid("FC4801A3-2BA9-11CF-A229-00AA003D7352")

       ]

    public interface IObjectWithSite

    {

        [PreserveSig]

        int SetSite([MarshalAs(UnmanagedType.IUnknown)]object site);

        [PreserveSig]

        int GetSite(ref Guid guid, out IntPtr ppvsite);

    }

}