using System;using System.Collections.Generic;using System.Text;using System.Windows.Forms;using System.Runtime.CompilerServices;using System.Runtime.InteropServices;namespace Hcsem{    public class MyWebBrowser : System.Windows.Forms.WebBrowser    {        #region ExtendedWebBrowserSite        class ExtendedWebBrowserSite : WebBrowser.WebBrowserSite, UnsafeNativeMethods.IDocHostShowUI        {            public ExtendedWebBrowserSite(WebBrowser host)                : base(host)            {            }            void UnsafeNativeMethods.IDocHostShowUI.ShowMessage(ref UnsafeNativeMethods._RemotableHandle hwnd, string lpstrText, string lpstrCaption, uint dwType, string lpstrHelpFile, uint dwHelpContext, out int plResult)            {                plResult = 0;                //TODO:自定义             }            void UnsafeNativeMethods.IDocHostShowUI.ShowHelp(ref UnsafeNativeMethods._RemotableHandle hwnd, string pszHelpFile, uint uCommand, uint dwData, UnsafeNativeMethods.tagPOINT ptMouse, object pDispatchObjectHit)            {                //TODO:自定义             }        }        protected override WebBrowserSiteBase CreateWebBrowserSiteBase()        {            return new ExtendedWebBrowserSite(this);        }        #endregion    }    public class UnsafeNativeMethods    {        #region IDocHostShowUI        [StructLayout(LayoutKind.Explicit, Pack = 4)]        public struct __MIDL_IWinTypes_0009        {            // Fields             [FieldOffset(0)]            public int hInproc;            [FieldOffset(0)]            public int hRemote;        }        [StructLayout(LayoutKind.Sequential, Pack = 4)]        public struct _RemotableHandle        {            public int fContext;            public __MIDL_IWinTypes_0009 u;        }        [StructLayout(LayoutKind.Sequential, Pack = 4)]        public struct tagPOINT        {            public int x;            public int y;        }        [ComImport, Guid("C4D244B0-D43E-11CF-893B-00AA00BDCE1A"), InterfaceType((short)1)]        public interface IDocHostShowUI        {            [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]            void ShowMessage([In, ComAliasName("ExtendedWebBrowser2.UnsafeNativeMethods.wireHWND")] ref _RemotableHandle hwnd, [In, MarshalAs(UnmanagedType.LPWStr)] string lpstrText, [In, MarshalAs(UnmanagedType.LPWStr)] string lpstrCaption, [In] uint dwType, [In, MarshalAs(UnmanagedType.LPWStr)] string lpstrHelpFile, [In] uint dwHelpContext, [ComAliasName("ExtendedWebBrowser2.UnsafeNativeMethods.LONG_PTR")] out int plResult);            [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType = MethodCodeType.Runtime)]            void ShowHelp([In, ComAliasName("ExtendedWebBrowser2.UnsafeNativeMethods.wireHWND")] ref _RemotableHandle hwnd, [In, MarshalAs(UnmanagedType.LPWStr)] string pszHelpFile, [In] uint uCommand, [In] uint dwData, [In] tagPOINT ptMouse, [Out, MarshalAs(UnmanagedType.IDispatch)] object pDispatchObjectHit);        }        #endregion    }}