Duilib中Webbrowser事件完善使其支持判断页面加载完毕

在多iframe的页面中，需要结合DISPID_DOCUMENTCOMPLETE和DISPID_NAVIGATECOMPLETE2两个事件判断页面是否加载完毕，而duilib中没有提供对DISPID_DOCUMENTCOMPLETE的支持。

要支持DISPID_DOCUMENTCOMPLETE，需要修改UIWebBrowser.cpp、UIWebBrowser.h和WebBrowserEventHandler.h三个文件

1.WebBrowserEventHandler.h文件

添加virtual void DocumentComplete()；

 #pragma once
 #include <ExDisp.h>
 #include <ExDispid.h>
 #include <mshtmhst.h>

 namespace DuiLib
 {
     class CWebBrowserEventHandler
     {
     public:
         CWebBrowserEventHandler() {}
         ~CWebBrowserEventHandler() {}

         virtual void BeforeNavigate2( IDispatch *pDisp,VARIANT *&url,VARIANT *&Flags,VARIANT *&TargetFrameName,VARIANT *&PostData,VARIANT *&Headers,VARIANT_BOOL *&Cancel ) {}
         virtual void NavigateError(IDispatch *pDisp,VARIANT * &url,VARIANT *&TargetFrameName,VARIANT *&StatusCode,VARIANT_BOOL *&Cancel) {}
         virtual void NavigateComplete2(IDispatch *pDisp,VARIANT *&url){}
virtual void DocumentComplete(){} //2016.10.19
         virtual void ProgressChange(LONG nProgress, LONG nProgressMax){}
         virtual void NewWindow3(IDispatch **pDisp, VARIANT_BOOL *&Cancel, DWORD dwFlags, BSTR bstrUrlContext, BSTR bstrUrl){}
         virtual void CommandStateChange(long Command,VARIANT_BOOL Enable){};

         // interface IDocHostUIHandler
         virtual HRESULT STDMETHODCALLTYPE ShowContextMenu(
             /* [in] */ DWORD dwID,
             /* [in] */ POINT __RPC_FAR *ppt,
             /* [in] */ IUnknown __RPC_FAR *pcmdtReserved,
             /* [in] */ IDispatch __RPC_FAR *pdispReserved)
         {
             //return E_NOTIMPL;
             //返回 E_NOTIMPL 正常弹出系统右键菜单
             return S_OK;
             //返回S_OK 则可屏蔽系统右键菜单
         }

         virtual HRESULT STDMETHODCALLTYPE GetHostInfo(
             /* [out][in] */ DOCHOSTUIINFO __RPC_FAR *pInfo)
         {
             //         if (pInfo != NULL)
             //         {
             //             pInfo->dwFlags |= DOCHOSTUIFLAG_NO3DBORDER;
             //         }
             return S_OK;
         }

         virtual HRESULT STDMETHODCALLTYPE ShowUI(
             /* [in] */ DWORD dwID,
             /* [in] */ IOleInPlaceActiveObject __RPC_FAR *pActiveObject,
             /* [in] */ IOleCommandTarget __RPC_FAR *pCommandTarget,
             /* [in] */ IOleInPlaceFrame __RPC_FAR *pFrame,
             /* [in] */ IOleInPlaceUIWindow __RPC_FAR *pDoc)
         {
             return S_FALSE;
         }

         virtual HRESULT STDMETHODCALLTYPE HideUI( void)
         {
             return S_OK;
         }

         virtual HRESULT STDMETHODCALLTYPE UpdateUI( void)
         {
             return S_OK;
         }

         virtual HRESULT STDMETHODCALLTYPE EnableModeless(
             /* [in] */ BOOL fEnable)
         {
             return S_OK;
         }

         virtual HRESULT STDMETHODCALLTYPE OnDocWindowActivate(
             /* [in] */ BOOL fActivate)
         {
             return S_OK;
         }

         virtual HRESULT STDMETHODCALLTYPE OnFrameWindowActivate(
             /* [in] */ BOOL fActivate)
         {
             return S_OK;
         }

         virtual HRESULT STDMETHODCALLTYPE ResizeBorder(
             /* [in] */ LPCRECT prcBorder,
             /* [in] */ IOleInPlaceUIWindow __RPC_FAR *pUIWindow,
             /* [in] */ BOOL fRameWindow)
         {
             return S_OK;
         }

         virtual HRESULT STDMETHODCALLTYPE TranslateAccelerator(
             /* [in] */ LPMSG lpMsg,
             /* [in] */ const GUID __RPC_FAR *pguidCmdGroup,
             /* [in] */ DWORD nCmdID)
         {
             return S_FALSE;
         }

         virtual HRESULT STDMETHODCALLTYPE GetOptionKeyPath(
             /* [out] */ LPOLESTR __RPC_FAR *pchKey,
             /* [in] */ DWORD dw)
         {
             return S_OK;
         }

         virtual HRESULT STDMETHODCALLTYPE GetDropTarget(
             /* [in] */ IDropTarget __RPC_FAR *pDropTarget,
             /* [out] */ IDropTarget __RPC_FAR *__RPC_FAR *ppDropTarget)
         {
             return E_NOTIMPL;
         }

         virtual HRESULT STDMETHODCALLTYPE GetExternal(
             /* [out] */ IDispatch __RPC_FAR *__RPC_FAR *ppDispatch)
         {
             return E_NOTIMPL;
         }

         virtual HRESULT STDMETHODCALLTYPE TranslateUrl(
             /* [in] */ DWORD dwTranslate,
             /* [in] */ OLECHAR __RPC_FAR *pchURLIn,
             /* [out] */ OLECHAR __RPC_FAR *__RPC_FAR *ppchURLOut)
         {
             return S_OK;
         }

         virtual HRESULT STDMETHODCALLTYPE FilterDataObject(
             /* [in] */ IDataObject __RPC_FAR *pDO,
             /* [out] */ IDataObject __RPC_FAR *__RPC_FAR *ppDORet)
         {
             return S_OK;
         }

         //     virtual HRESULT STDMETHODCALLTYPE GetOverrideKeyPath(
         //         /* [annotation][out] */
         //         __deref_out  LPOLESTR *pchKey,
         //         /* [in] */ DWORD dw)
         //     {
         //         return E_NOTIMPL;
         //     }

         // IDownloadManager
         virtual HRESULT STDMETHODCALLTYPE Download(
             /* [in] */ IMoniker *pmk,
             /* [in] */ IBindCtx *pbc,
             /* [in] */ DWORD dwBindVerb,
             /* [in] */ LONG grfBINDF,
             /* [in] */ BINDINFO *pBindInfo,
             /* [in] */ LPCOLESTR pszHeaders,
             /* [in] */ LPCOLESTR pszRedir,
             /* [in] */ UINT uiCP)
         {
             return S_OK;
         }
     };
 }

2.在UIWebBrowser.h添加

void DocumentComplete();

 #ifndef __UIWEBBROWSER_H__
 #define __UIWEBBROWSER_H__

 #pragma once

 #include "../Utils/WebBrowserEventHandler.h"
 #include <ExDisp.h>

 namespace DuiLib
 {
     class UILIB_API CWebBrowserUI
         : public CActiveXUI
         , public IDocHostUIHandler
         , public IServiceProvider
         , public IOleCommandTarget
         , public IDispatch
         , public ITranslateAccelerator
     {
     public:
         /// 构造函数
         CWebBrowserUI();
         virtual ~CWebBrowserUI();

         void SetHomePage(LPCTSTR lpszUrl);
         LPCTSTR GetHomePage();

         void SetAutoNavigation(bool bAuto = TRUE);
         bool IsAutoNavigation();

         void SetWebBrowserEventHandler(CWebBrowserEventHandler* pEventHandler);
         void Navigate2(LPCTSTR lpszUrl);
         void Refresh();
         void Refresh2(int Level);
         void GoBack();
         void GoForward();
         void NavigateHomePage();
         void NavigateUrl(LPCTSTR lpszUrl);
         virtual bool DoCreateControl();
         IWebBrowser2* GetWebBrowser2(void);
         IDispatch*           GetHtmlWindow();
         static DISPID FindId(IDispatch *pObj, LPOLESTR pName);
         static HRESULT InvokeMethod(IDispatch *pObj, LPOLESTR pMehtod, VARIANT *pVarResult, VARIANT *ps, int cArgs);
         static HRESULT GetProperty(IDispatch *pObj, LPOLESTR pName, VARIANT *pValue);
         static HRESULT SetProperty(IDispatch *pObj, LPOLESTR pName, VARIANT *pValue);

     protected:
         IWebBrowser2*            m_pWebBrowser2; //浏览器指针
         IHTMLWindow2*        _pHtmlWnd2;
         LONG m_dwRef;
         DWORD m_dwCookie;
         virtual void ReleaseControl();
         HRESULT RegisterEventHandler(BOOL inAdvise);
         virtual void SetAttribute(LPCTSTR pstrName, LPCTSTR pstrValue);
         CDuiString m_sHomePage;    // 默认页面
         bool m_bAutoNavi;    // 是否启动时打开默认页面
         CWebBrowserEventHandler* m_pWebBrowserEventHandler;    //浏览器事件处理

         // DWebBrowserEvents2
         void BeforeNavigate2( IDispatch *pDisp,VARIANT *&url,VARIANT *&Flags,VARIANT *&TargetFrameName,VARIANT *&PostData,VARIANT *&Headers,VARIANT_BOOL *&Cancel );
         void NavigateError(IDispatch *pDisp,VARIANT * &url,VARIANT *&TargetFrameName,VARIANT *&StatusCode,VARIANT_BOOL *&Cancel);
         void NavigateComplete2(IDispatch *pDisp,VARIANT *&url);
         void ProgressChange(LONG nProgress, LONG nProgressMax);
         void NewWindow3(IDispatch **pDisp, VARIANT_BOOL *&Cancel, DWORD dwFlags, BSTR bstrUrlContext, BSTR bstrUrl);
         void CommandStateChange(long Command,VARIANT_BOOL Enable);
         void DocumentComplete();//201610.19
     public:
         virtual LPCTSTR GetClass() const;
         virtual LPVOID GetInterface( LPCTSTR pstrName );

         // IUnknown
         STDMETHOD_(ULONG,AddRef)();
         STDMETHOD_(ULONG,Release)();
         STDMETHOD(QueryInterface)(REFIID riid, LPVOID *ppvObject);

         // IDispatch
         virtual HRESULT STDMETHODCALLTYPE GetTypeInfoCount( __RPC__out UINT *pctinfo );
         virtual HRESULT STDMETHODCALLTYPE GetTypeInfo( UINT iTInfo, LCID lcid, __RPC__deref_out_opt ITypeInfo **ppTInfo );
         virtual HRESULT STDMETHODCALLTYPE GetIDsOfNames( __RPC__in REFIID riid, __RPC__in_ecount_full(cNames ) LPOLESTR *rgszNames, UINT cNames, LCID lcid, __RPC__out_ecount_full(cNames) DISPID *rgDispId);
         virtual HRESULT STDMETHODCALLTYPE Invoke( DISPID dispIdMember, REFIID riid, LCID lcid, WORD wFlags, DISPPARAMS *pDispParams, VARIANT *pVarResult, EXCEPINFO *pExcepInfo, UINT *puArgErr );

         // IDocHostUIHandler
         STDMETHOD(ShowContextMenu)(DWORD dwID, POINT* pptPosition, IUnknown* pCommandTarget, IDispatch* pDispatchObjectHit);
         STDMETHOD(GetHostInfo)(DOCHOSTUIINFO* pInfo);
         STDMETHOD(ShowUI)(DWORD dwID, IOleInPlaceActiveObject* pActiveObject, IOleCommandTarget* pCommandTarget, IOleInPlaceFrame* pFrame, IOleInPlaceUIWindow* pDoc);
         STDMETHOD(HideUI)();
         STDMETHOD(UpdateUI)();
         STDMETHOD(EnableModeless)(BOOL fEnable);
         STDMETHOD(OnDocWindowActivate)(BOOL fActivate);
         STDMETHOD(OnFrameWindowActivate)(BOOL fActivate);
         STDMETHOD(ResizeBorder)(LPCRECT prcBorder, IOleInPlaceUIWindow* pUIWindow, BOOL fFrameWindow);
         STDMETHOD(TranslateAccelerator)(LPMSG lpMsg, const GUID* pguidCmdGroup, DWORD nCmdID);    //浏览器消息过滤
         STDMETHOD(GetOptionKeyPath)(LPOLESTR* pchKey, DWORD dwReserved);
         STDMETHOD(GetDropTarget)(IDropTarget* pDropTarget, IDropTarget** ppDropTarget);
         STDMETHOD(GetExternal)(IDispatch** ppDispatch);
         STDMETHOD(TranslateUrl)(DWORD dwTranslate, OLECHAR* pchURLIn, OLECHAR** ppchURLOut);
         STDMETHOD(FilterDataObject)(IDataObject* pDO, IDataObject** ppDORet);

         // IServiceProvider
         STDMETHOD(QueryService)(REFGUID guidService, REFIID riid, void** ppvObject);

         // IOleCommandTarget
         virtual HRESULT STDMETHODCALLTYPE QueryStatus( __RPC__in_opt const GUID *pguidCmdGroup, ULONG cCmds, __RPC__inout_ecount_full(cCmds ) OLECMD prgCmds[ ], __RPC__inout_opt OLECMDTEXT *pCmdText);
         virtual HRESULT STDMETHODCALLTYPE Exec( __RPC__in_opt const GUID *pguidCmdGroup, DWORD nCmdID, DWORD nCmdexecopt, __RPC__in_opt VARIANT *pvaIn, __RPC__inout_opt VARIANT *pvaOut );

         // IDownloadManager
         STDMETHOD(Download)(
             /* [in] */ IMoniker *pmk,
             /* [in] */ IBindCtx *pbc,
             /* [in] */ DWORD dwBindVerb,
             /* [in] */ LONG grfBINDF,
             /* [in] */ BINDINFO *pBindInfo,
             /* [in] */ LPCOLESTR pszHeaders,
             /* [in] */ LPCOLESTR pszRedir,
             /* [in] */ UINT uiCP);

         // ITranslateAccelerator
         // Duilib消息分发给WebBrowser
         virtual LRESULT TranslateAccelerator( MSG *pMsg );
     };
 } // namespace DuiLib
 #endif // __UIWEBBROWSER_H__

3.UIWebBrowser.cpp添加实现

 #include "StdAfx.h"
 #include "UIWebBrowser.h"
 #include <atlconv.h>
 #include <atlcomcli.h>
 #include "../Utils/downloadmgr.h"
 #include <mshtml.h>

 DuiLib::CWebBrowserUI::CWebBrowserUI()
 : m_pWebBrowser2(NULL)
 , _pHtmlWnd2(NULL)
 , m_pWebBrowserEventHandler(NULL)
 , m_bAutoNavi(false)
 , m_dwRef()
 , m_dwCookie()
 {
     m_clsid=CLSID_WebBrowser;
     m_sHomePage.Empty();
 }

 bool DuiLib::CWebBrowserUI::DoCreateControl()
 {
     if (!CActiveXUI::DoCreateControl())
         return false;
     GetManager()->AddTranslateAccelerator(this);
     GetControl(IID_IWebBrowser2,(LPVOID*)&m_pWebBrowser2);
     if ( m_bAutoNavi && !m_sHomePage.IsEmpty())
     {
         this->Navigate2(m_sHomePage);
     }
     RegisterEventHandler(TRUE);
     return true;
 }

 void DuiLib::CWebBrowserUI::ReleaseControl()
 {
     m_bCreated=false;
     GetManager()->RemoveTranslateAccelerator(this);
     RegisterEventHandler(FALSE);
 }

 DuiLib::CWebBrowserUI::~CWebBrowserUI()
 {
     ReleaseControl();
 }

 STDMETHODIMP DuiLib::CWebBrowserUI::GetTypeInfoCount( UINT *iTInfo )
 {
     *iTInfo = ;
     return E_NOTIMPL;
 }

 STDMETHODIMP DuiLib::CWebBrowserUI::GetTypeInfo( UINT iTInfo, LCID lcid, ITypeInfo **ppTInfo )
 {
     return E_NOTIMPL;
 }

 STDMETHODIMP DuiLib::CWebBrowserUI::GetIDsOfNames( REFIID riid, OLECHAR **rgszNames, UINT cNames, LCID lcid,DISPID *rgDispId )
 {
     return E_NOTIMPL;
 }

 STDMETHODIMP DuiLib::CWebBrowserUI::Invoke( DISPID dispIdMember, REFIID riid, LCID lcid,WORD wFlags, DISPPARAMS* pDispParams,VARIANT* pVarResult, EXCEPINFO* pExcepInfo,UINT* puArgErr )
 {
     if ((riid != IID_NULL))
         return E_INVALIDARG;

     switch(dispIdMember)
     {
     case DISPID_BEFORENAVIGATE2:
         BeforeNavigate2(
             pDispParams->rgvarg[].pdispVal,
             pDispParams->rgvarg[].pvarVal,
             pDispParams->rgvarg[].pvarVal,
             pDispParams->rgvarg[].pvarVal,
             pDispParams->rgvarg[].pvarVal,
             pDispParams->rgvarg[].pvarVal,
             pDispParams->rgvarg[].pboolVal);
         break;
     case DISPID_COMMANDSTATECHANGE:
         CommandStateChange(
             pDispParams->rgvarg[].lVal,
             pDispParams->rgvarg[].boolVal);
         break;
     case DISPID_NAVIGATECOMPLETE2:
         NavigateComplete2(
             pDispParams->rgvarg[].pdispVal,
             pDispParams->rgvarg[].pvarVal);
         break;
     case DISPID_NAVIGATEERROR:
         NavigateError(
             pDispParams->rgvarg[].pdispVal,
             pDispParams->rgvarg[].pvarVal,
             pDispParams->rgvarg[].pvarVal,
             pDispParams->rgvarg[].pvarVal,
             pDispParams->rgvarg[].pboolVal);
         break;
     case DISPID_STATUSTEXTCHANGE:
         break;
         //      case DISPID_NEWWINDOW2:
         //          break;
     case DISPID_NEWWINDOW3:
         NewWindow3(
             pDispParams->rgvarg[].ppdispVal,
             pDispParams->rgvarg[].pboolVal,
             pDispParams->rgvarg[].uintVal,
             pDispParams->rgvarg[].bstrVal,
             pDispParams->rgvarg[].bstrVal);
         break;
 //     case DISPID_PROPERTYCHANGE:
 //         if (pDispParams->cArgs>0 && pDispParams->rgvarg[0].vt == VT_BSTR) {
 //             TRACE(_T("PropertyChange(%s)\n"), pDispParams->rgvarg[0].bstrVal);
 //         }
 //         break;

     case DISPID_DOCUMENTCOMPLETE:
         DocumentComplete();//2016.10.19
         break;
     default:
         return DISP_E_MEMBERNOTFOUND;
     }
     return S_OK;
 }

 STDMETHODIMP DuiLib::CWebBrowserUI::QueryInterface( REFIID riid, LPVOID *ppvObject )
 {
     *ppvObject = NULL;

     if( riid == IID_IDocHostUIHandler)
         *ppvObject = static_cast<IDocHostUIHandler*>(this);
     else if( riid == IID_IDispatch)
         *ppvObject = static_cast<IDispatch*>(this);
     else if( riid == IID_IServiceProvider)
         *ppvObject = static_cast<IServiceProvider*>(this);
     else if (riid == IID_IOleCommandTarget)
         *ppvObject = static_cast<IOleCommandTarget*>(this);

     if( *ppvObject != NULL )
         AddRef();
     return *ppvObject == NULL ? E_NOINTERFACE : S_OK;
 }

 STDMETHODIMP_(ULONG) DuiLib::CWebBrowserUI::AddRef()
 {
     InterlockedIncrement(&m_dwRef);
     return m_dwRef;
 }

 STDMETHODIMP_(ULONG) DuiLib::CWebBrowserUI::Release()
 {
     ULONG ulRefCount = InterlockedDecrement(&m_dwRef);
     return ulRefCount;
 }

 void DuiLib::CWebBrowserUI::Navigate2( LPCTSTR lpszUrl )
 {
     if (lpszUrl == NULL)
         return;

     if (m_pWebBrowser2)
     {
         CVariant url;
         url.vt=VT_BSTR;
         url.bstrVal=T2BSTR(lpszUrl);
         HRESULT hr = m_pWebBrowser2->Navigate2(&url, NULL, NULL, NULL, NULL);
     }
 }

 void DuiLib::CWebBrowserUI::Refresh()
 {
     if (m_pWebBrowser2)
     {
         m_pWebBrowser2->Refresh();
     }
 }
 void DuiLib::CWebBrowserUI::GoBack()
 {
     if (m_pWebBrowser2)
     {
         m_pWebBrowser2->GoBack();
     }
 }
 void DuiLib::CWebBrowserUI::GoForward()
 {
     if (m_pWebBrowser2)
     {
         m_pWebBrowser2->GoForward();
     }
 }
 /// DWebBrowserEvents2
 void DuiLib::CWebBrowserUI::BeforeNavigate2( IDispatch *pDisp,VARIANT *&url,VARIANT *&Flags,VARIANT *&TargetFrameName,VARIANT *&PostData,VARIANT *&Headers,VARIANT_BOOL *&Cancel )
 {
     if (m_pWebBrowserEventHandler)
     {
         m_pWebBrowserEventHandler->BeforeNavigate2(pDisp,url,Flags,TargetFrameName,PostData,Headers,Cancel);
     }
 }

 void DuiLib::CWebBrowserUI::NavigateError( IDispatch *pDisp,VARIANT * &url,VARIANT *&TargetFrameName,VARIANT *&StatusCode,VARIANT_BOOL *&Cancel )
 {
     if (m_pWebBrowserEventHandler)
     {
         m_pWebBrowserEventHandler->NavigateError(pDisp,url,TargetFrameName,StatusCode,Cancel);
     }
 }

 void DuiLib::CWebBrowserUI::NavigateComplete2( IDispatch *pDisp,VARIANT *&url )
 {
     CComPtr<IDispatch> spDoc;
     m_pWebBrowser2->get_Document(&spDoc);   

     if (spDoc)
     {
         CComQIPtr<ICustomDoc, &IID_ICustomDoc> spCustomDoc(spDoc);
         if (spCustomDoc)
             spCustomDoc->SetUIHandler(this);
     }

     if (m_pWebBrowserEventHandler)
     {
         m_pWebBrowserEventHandler->NavigateComplete2(pDisp,url);
     }
 }

 void DuiLib::CWebBrowserUI::ProgressChange( LONG nProgress, LONG nProgressMax )
 {
     if (m_pWebBrowserEventHandler)
     {
         m_pWebBrowserEventHandler->ProgressChange(nProgress,nProgressMax);
     }
 }

 void DuiLib::CWebBrowserUI::NewWindow3( IDispatch **pDisp, VARIANT_BOOL *&Cancel, DWORD dwFlags, BSTR bstrUrlContext, BSTR bstrUrl )
 {
     if (m_pWebBrowserEventHandler)
     {
         m_pWebBrowserEventHandler->NewWindow3(pDisp,Cancel,dwFlags,bstrUrlContext,bstrUrl);
     }
 }
 void DuiLib::CWebBrowserUI::CommandStateChange(long Command,VARIANT_BOOL Enable)
 {
     if (m_pWebBrowserEventHandler)
     {
         m_pWebBrowserEventHandler->CommandStateChange(Command,Enable);
     }
 }
 void DuiLib::CWebBrowserUI::DocumentComplete()//2016.10.19
 {
     if (m_pWebBrowserEventHandler)
     {
         m_pWebBrowserEventHandler->DocumentComplete();
     }
 }

 // IDownloadManager
 STDMETHODIMP DuiLib::CWebBrowserUI::Download( /* [in] */ IMoniker *pmk, /* [in] */ IBindCtx *pbc, /* [in] */ DWORD dwBindVerb, /* [in] */ LONG grfBINDF, /* [in] */ BINDINFO *pBindInfo, /* [in] */ LPCOLESTR pszHeaders, /* [in] */ LPCOLESTR pszRedir, /* [in] */ UINT uiCP )
 {
     if (m_pWebBrowserEventHandler)
     {
         return m_pWebBrowserEventHandler->Download(pmk,pbc,dwBindVerb,grfBINDF,pBindInfo,pszHeaders,pszRedir,uiCP);
     }
     return S_OK;
 }

 // IDocHostUIHandler
 STDMETHODIMP DuiLib::CWebBrowserUI::ShowContextMenu( DWORD dwID, POINT* pptPosition, IUnknown* pCommandTarget, IDispatch* pDispatchObjectHit )
 {
     if (m_pWebBrowserEventHandler)
     {
         return m_pWebBrowserEventHandler->ShowContextMenu(dwID,pptPosition,pCommandTarget,pDispatchObjectHit);
     }
     return S_FALSE;
 }

 STDMETHODIMP DuiLib::CWebBrowserUI::GetHostInfo( DOCHOSTUIINFO* pInfo )
 {
     if (m_pWebBrowserEventHandler)
     {
         return m_pWebBrowserEventHandler->GetHostInfo(pInfo);
     }
     return E_NOTIMPL;
 }

 STDMETHODIMP DuiLib::CWebBrowserUI::ShowUI( DWORD dwID, IOleInPlaceActiveObject* pActiveObject, IOleCommandTarget* pCommandTarget, IOleInPlaceFrame* pFrame, IOleInPlaceUIWindow* pDoc )
 {
     if (m_pWebBrowserEventHandler)
     {
         return m_pWebBrowserEventHandler->ShowUI(dwID,pActiveObject,pCommandTarget,pFrame,pDoc);
     }
     return S_OK;
 }

 STDMETHODIMP DuiLib::CWebBrowserUI::HideUI()
 {
     if (m_pWebBrowserEventHandler)
     {
         return m_pWebBrowserEventHandler->HideUI();
     }
     return S_OK;
 }

 STDMETHODIMP DuiLib::CWebBrowserUI::UpdateUI()
 {
     if (m_pWebBrowserEventHandler)
     {
         return m_pWebBrowserEventHandler->UpdateUI();
     }
     return S_OK;
 }

 STDMETHODIMP DuiLib::CWebBrowserUI::EnableModeless( BOOL fEnable )
 {
     if (m_pWebBrowserEventHandler)
     {
         return m_pWebBrowserEventHandler->EnableModeless(fEnable);
     }
     return E_NOTIMPL;
 }

 STDMETHODIMP DuiLib::CWebBrowserUI::OnDocWindowActivate( BOOL fActivate )
 {
     if (m_pWebBrowserEventHandler)
     {
         return m_pWebBrowserEventHandler->OnDocWindowActivate(fActivate);
     }
     return E_NOTIMPL;
 }

 STDMETHODIMP DuiLib::CWebBrowserUI::OnFrameWindowActivate( BOOL fActivate )
 {
     if (m_pWebBrowserEventHandler)
     {
         return m_pWebBrowserEventHandler->OnFrameWindowActivate(fActivate);
     }
     return E_NOTIMPL;
 }

 STDMETHODIMP DuiLib::CWebBrowserUI::ResizeBorder( LPCRECT prcBorder, IOleInPlaceUIWindow* pUIWindow, BOOL fFrameWindow )
 {
     if (m_pWebBrowserEventHandler)
     {
         return m_pWebBrowserEventHandler->ResizeBorder(prcBorder,pUIWindow,fFrameWindow);
     }
     return E_NOTIMPL;
 }

 STDMETHODIMP DuiLib::CWebBrowserUI::TranslateAccelerator( LPMSG lpMsg, const GUID* pguidCmdGroup, DWORD nCmdID )
 {
     if (m_pWebBrowserEventHandler)
     {
         return m_pWebBrowserEventHandler->TranslateAccelerator(lpMsg,pguidCmdGroup,nCmdID);
     }
     return S_FALSE;
 }

 LRESULT DuiLib::CWebBrowserUI::TranslateAccelerator( MSG *pMsg )
 {
     if(pMsg->message < WM_KEYFIRST || pMsg->message > WM_KEYLAST)
         return S_FALSE;

     if( m_pWebBrowser2 == NULL )
         return E_NOTIMPL;

     // 当前Web窗口不是焦点,不处理加速键
     BOOL bIsChild = FALSE;
     HWND hTempWnd = NULL;
     HWND hWndFocus = ::GetFocus();

     hTempWnd = hWndFocus;
     while(hTempWnd != NULL)
     {
         if(hTempWnd == m_hwndHost)
         {
             bIsChild = TRUE;
             break;
         }
         hTempWnd = ::GetParent(hTempWnd);
     }
     if(!bIsChild)
         return S_FALSE;

     IOleInPlaceActiveObject *pObj;
     if (FAILED(m_pWebBrowser2->QueryInterface(IID_IOleInPlaceActiveObject, (LPVOID *)&pObj)))
         return S_FALSE;

     HRESULT hResult = pObj->TranslateAccelerator(pMsg);
     pObj->Release();
     return hResult;
 }

 STDMETHODIMP DuiLib::CWebBrowserUI::GetOptionKeyPath( LPOLESTR* pchKey, DWORD dwReserved )
 {
     if (m_pWebBrowserEventHandler)
     {
         return m_pWebBrowserEventHandler->GetOptionKeyPath(pchKey,dwReserved);
     }
     return E_NOTIMPL;
 }

 STDMETHODIMP DuiLib::CWebBrowserUI::GetDropTarget( IDropTarget* pDropTarget, IDropTarget** ppDropTarget )
 {
     if (m_pWebBrowserEventHandler)
     {
         return m_pWebBrowserEventHandler->GetDropTarget(pDropTarget,ppDropTarget);
     }
     return S_FALSE;    // 使用系统拖拽
 }

 STDMETHODIMP DuiLib::CWebBrowserUI::GetExternal( IDispatch** ppDispatch )
 {
     if (m_pWebBrowserEventHandler)
     {
         return m_pWebBrowserEventHandler->GetExternal(ppDispatch);
     }
     return S_FALSE;
 }

 STDMETHODIMP DuiLib::CWebBrowserUI::TranslateUrl( DWORD dwTranslate, OLECHAR* pchURLIn, OLECHAR** ppchURLOut )
 {
     if (m_pWebBrowserEventHandler)
     {
         return m_pWebBrowserEventHandler->TranslateUrl(dwTranslate,pchURLIn,ppchURLOut);
     }
     else
     {
         *ppchURLOut = ;
         return E_NOTIMPL;
     }
 }

 STDMETHODIMP DuiLib::CWebBrowserUI::FilterDataObject( IDataObject* pDO, IDataObject** ppDORet )
 {
     if (m_pWebBrowserEventHandler)
     {
         return m_pWebBrowserEventHandler->FilterDataObject(pDO,ppDORet);
     }
     else
     {
         *ppDORet = ;
         return E_NOTIMPL;
     }
 }

 void DuiLib::CWebBrowserUI::SetWebBrowserEventHandler( CWebBrowserEventHandler* pEventHandler )
 {
     if ( pEventHandler!=NULL && m_pWebBrowserEventHandler!=pEventHandler)
         m_pWebBrowserEventHandler=pEventHandler;
 }

 void DuiLib::CWebBrowserUI::Refresh2( int Level )
 {
     CVariant vLevel;
     vLevel.vt=VT_I4;
     vLevel.intVal=Level;
     m_pWebBrowser2->Refresh2(&vLevel);
 }

 void DuiLib::CWebBrowserUI::SetAttribute( LPCTSTR pstrName, LPCTSTR pstrValue )
 {
     if (_tcscmp(pstrName, _T("homepage")) == )
     {
         m_sHomePage = pstrValue;
     }
     else if (_tcscmp(pstrName, _T("autonavi"))==)
     {
         m_bAutoNavi = (_tcscmp(pstrValue, _T("true")) == );
     }
     else
         CActiveXUI::SetAttribute(pstrName, pstrValue);
 }

 void DuiLib::CWebBrowserUI::NavigateHomePage()
 {
     if (!m_sHomePage.IsEmpty())
         this->NavigateUrl(m_sHomePage);
 }

 void DuiLib::CWebBrowserUI::NavigateUrl( LPCTSTR lpszUrl )
 {
     if (m_pWebBrowser2 && lpszUrl)
     {
         m_pWebBrowser2->Navigate((BSTR)SysAllocString(T2BSTR(lpszUrl)),NULL,NULL,NULL,NULL);
     }
 }

 LPCTSTR DuiLib::CWebBrowserUI::GetClass() const
 {
     return _T("WebBrowserUI");
 }

 LPVOID DuiLib::CWebBrowserUI::GetInterface( LPCTSTR pstrName )
 {
     if( _tcscmp(pstrName, DUI_CTR_WEBBROWSER) ==  ) return static_cast<CWebBrowserUI*>(this);
     return CActiveXUI::GetInterface(pstrName);
 }

 void DuiLib::CWebBrowserUI::SetHomePage( LPCTSTR lpszUrl )
 {
     m_sHomePage.Format(_T("%s"),lpszUrl);
 }

 LPCTSTR DuiLib::CWebBrowserUI::GetHomePage()
 {
     return m_sHomePage;
 }

 void DuiLib::CWebBrowserUI::SetAutoNavigation( bool bAuto /*= TRUE*/ )
 {
     if (m_bAutoNavi==bAuto)    return;

     m_bAutoNavi=bAuto;
 }

 bool DuiLib::CWebBrowserUI::IsAutoNavigation()
 {
     return m_bAutoNavi;
 }

 STDMETHODIMP DuiLib::CWebBrowserUI::QueryService( REFGUID guidService, REFIID riid, void** ppvObject )
 {
     HRESULT hr = E_NOINTERFACE;
     *ppvObject = NULL;

     if ( guidService == SID_SDownloadManager && riid == IID_IDownloadManager)
     {
         *ppvObject = this;
         return S_OK;
     }

     return hr;
 }

 HRESULT DuiLib::CWebBrowserUI::RegisterEventHandler( BOOL inAdvise )
 {
     CComPtr<IWebBrowser2> pWebBrowser;
     CComPtr<IConnectionPointContainer>  pCPC;
     CComPtr<IConnectionPoint> pCP;
     HRESULT hr = GetControl(IID_IWebBrowser2, (void**)&pWebBrowser);
     if (FAILED(hr))
         return hr;
     hr=pWebBrowser->QueryInterface(IID_IConnectionPointContainer,(void **)&pCPC);
     if (FAILED(hr))
         return hr;
     hr=pCPC->FindConnectionPoint(DIID_DWebBrowserEvents2,&pCP);
     if (FAILED(hr))
         return hr;

     if (inAdvise)
     {
         hr = pCP->Advise((IDispatch*)this, &m_dwCookie);
     }
     else
     {
         hr = pCP->Unadvise(m_dwCookie);
     }
     return hr;
 }

 DISPID DuiLib::CWebBrowserUI::FindId( IDispatch *pObj, LPOLESTR pName )
 {
     DISPID id = ;
     if(FAILED(pObj->GetIDsOfNames(IID_NULL,&pName,,LOCALE_SYSTEM_DEFAULT,&id))) id = -;
     return id;
 }

 HRESULT DuiLib::CWebBrowserUI::InvokeMethod( IDispatch *pObj, LPOLESTR pMehtod, VARIANT *pVarResult, VARIANT *ps, int cArgs )
 {
     DISPID dispid = FindId(pObj, pMehtod);
     if(dispid == -) return E_FAIL;

     DISPPARAMS dispparams;
     dispparams.cArgs = cArgs;
     dispparams.rgvarg = ps;
     dispparams.cNamedArgs = ;
     dispparams.rgdispidNamedArgs = NULL;

     return pObj->Invoke(dispid, IID_NULL, LOCALE_SYSTEM_DEFAULT, DISPATCH_METHOD, &dispparams, pVarResult, NULL, NULL);
 }

 HRESULT DuiLib::CWebBrowserUI::GetProperty( IDispatch *pObj, LPOLESTR pName, VARIANT *pValue )
 {
     DISPID dispid = FindId(pObj, pName);
     if(dispid == -) return E_FAIL;

     DISPPARAMS ps;
     ps.cArgs = ;
     ps.rgvarg = NULL;
     ps.cNamedArgs = ;
     ps.rgdispidNamedArgs = NULL;

     return pObj->Invoke(dispid, IID_NULL, LOCALE_SYSTEM_DEFAULT, DISPATCH_PROPERTYGET, &ps, pValue, NULL, NULL);
 }

 HRESULT DuiLib::CWebBrowserUI::SetProperty( IDispatch *pObj, LPOLESTR pName, VARIANT *pValue )
 {
     DISPID dispid = FindId(pObj, pName);
     if(dispid == -) return E_FAIL;

     DISPPARAMS ps;
     ps.cArgs = ;
     ps.rgvarg = pValue;
     ps.cNamedArgs = ;
     ps.rgdispidNamedArgs = NULL;

     return pObj->Invoke(dispid, IID_NULL, LOCALE_SYSTEM_DEFAULT, DISPATCH_PROPERTYPUT, &ps, NULL, NULL, NULL);
 }

 IDispatch* DuiLib::CWebBrowserUI::GetHtmlWindow()
 {
     IDispatch* pDp =  NULL;
     HRESULT hr;
     if (m_pWebBrowser2)
         hr=m_pWebBrowser2->get_Document(&pDp);

     if (FAILED(hr))
         return NULL;

     CComQIPtr<IHTMLDocument2> pHtmlDoc2 = pDp;

     if (pHtmlDoc2 == NULL)
         return NULL;

     hr=pHtmlDoc2->get_parentWindow(&_pHtmlWnd2);

     if (FAILED(hr))
         return NULL;

     IDispatch *pHtmlWindown = NULL;
     hr=_pHtmlWnd2->QueryInterface(IID_IDispatch, (void**)&pHtmlWindown);
     if (FAILED(hr))
         return NULL;

     return pHtmlWindown;
 }

 IWebBrowser2* DuiLib::CWebBrowserUI::GetWebBrowser2( void )
 {
     return m_pWebBrowser2;
 }

 HRESULT STDMETHODCALLTYPE DuiLib::CWebBrowserUI::QueryStatus( __RPC__in_opt const GUID *pguidCmdGroup, ULONG cCmds, __RPC__inout_ecount_full(cCmds ) OLECMD prgCmds[ ], __RPC__inout_opt OLECMDTEXT *pCmdText )
 {
     HRESULT hr = OLECMDERR_E_NOTSUPPORTED;
     return hr;
 }

 HRESULT STDMETHODCALLTYPE DuiLib::CWebBrowserUI::Exec( __RPC__in_opt const GUID *pguidCmdGroup, DWORD nCmdID, DWORD nCmdexecopt, __RPC__in_opt VARIANT *pvaIn, __RPC__inout_opt VARIANT *pvaOut )
 {
     HRESULT hr = S_OK;

     if (pguidCmdGroup && IsEqualGUID(*pguidCmdGroup, CGID_DocHostCommandHandler))
     {

         switch (nCmdID)
         {

         case OLECMDID_SHOWSCRIPTERROR:
             {
                 IHTMLDocument2*             pDoc = NULL;
                 IHTMLWindow2*               pWindow = NULL;
                 IHTMLEventObj*              pEventObj = NULL;
                 BSTR                        rgwszNames[] =
                 {
                     SysAllocString(L"errorLine"),
                     SysAllocString(L"errorCharacter"),
                     SysAllocString(L"errorCode"),
                     SysAllocString(L"errorMessage"),
                     SysAllocString(L"errorUrl")
                 };
                 DISPID                      rgDispIDs[];
                 VARIANT                     rgvaEventInfo[];
                 DISPPARAMS                  params;
                 BOOL                        fContinueRunningScripts = true;
                 int                         i;

                 params.cArgs = ;
                 params.cNamedArgs = ;

                 // Get the document that is currently being viewed.
                 hr = pvaIn->punkVal->QueryInterface(IID_IHTMLDocument2, (void **) &pDoc);
                 // Get document.parentWindow.
                 hr = pDoc->get_parentWindow(&pWindow);
                 pDoc->Release();
                 // Get the window.event object.
                 hr = pWindow->get_event(&pEventObj);
                 // Get the error info from the window.event object.
                 for (i = ; i < ; i++)
                 {
                     // Get the property's dispID.
                     hr = pEventObj->GetIDsOfNames(IID_NULL, &rgwszNames[i], ,
                         LOCALE_SYSTEM_DEFAULT, &rgDispIDs[i]);
                     // Get the value of the property.
                     hr = pEventObj->Invoke(rgDispIDs[i], IID_NULL,
                         LOCALE_SYSTEM_DEFAULT,
                         DISPATCH_PROPERTYGET, &params, &rgvaEventInfo[i],
                         NULL, NULL);
                     SysFreeString(rgwszNames[i]);
                 }

                 // At this point, you would normally alert the user with
                 // the information about the error, which is now contained
                 // in rgvaEventInfo[]. Or, you could just exit silently.

                 (*pvaOut).vt = VT_BOOL;
                 if (fContinueRunningScripts)
                 {
                     // Continue running scripts on the page.
                     (*pvaOut).boolVal = VARIANT_TRUE;
                 }
                 else
                 {
                     // Stop running scripts on the page.
                     (*pvaOut).boolVal = VARIANT_FALSE;
                 }
                 break;
             }
         default:
             hr = OLECMDERR_E_NOTSUPPORTED;
             break;
         }
     }
     else
     {
         hr = OLECMDERR_E_UNKNOWNGROUP;
     }
     return (hr);
 }

带参数的：

源码