使用C++实现SDK之WebBrowser容器

转自http://blog.csdn.net/norsd/article/details/2921389

一.由来

         我还记还得当自认为学习完了C++语法后, 兴致勃勃的打开MFC向导,开始所谓"MFC高级自动化编程"时, 我不由喊道: 这他妈的都是些什么乱七八糟的东西啊.诚然,MFC为了方便愚蠢的程序员,的确是让人瞬间高级编程, 可是愚蠢的我们还是会用CString strTest;写出(PWSTR)strTest.GetBuffer() 这种自作聪明的用法,结果就是整个程序好像发了疯.

         终于有一天,我大喊一声: 滚蛋吧,MFC!

         太阳当空照,上帝对 我笑:  你Y去写个有WebBrowser控件的窗口吧

二.结构

          MFC的HTMLDialog 是一个魔盒, 他容易上手,可是却很难深入,究其缘由, 私以为无外乎MFC包装的太好, 不识庐山真面目,只缘身在此山中.  总是以为作为C类型的程序员,喜欢深入原理是职业特性.

        于是首先看到有强人写的纯C实现WebBrowser控件,他在这里: http://www.codeproject.com/KB/COM/cwebpage.aspx 这位同志很好的展示了在没有C++的支持下,支持ActiveX是多么痛苦的一件事情...........汗. 在下觉得,撇开C++的类的特性,虚拟特性,重载特性,而去用纯C实现,实在有点过犹不及,当然这种练习修炼内功很好,但是实际应用上显得麻烦.毕竟,ActiveX很好的使用了C++的特性,而不是C的特性.

        接着,开始使用纯SDK编写容器. 读者可以搜索csdn中关于SDK实现WebBrowser容器的帖子, 许多人说那是非常繁琐复杂.所谓人云亦云,各位看官不妨跟着我一试,且看到底何如?

       WebBrowser容器的实现需要许多接口, 也许正是这吓退了许多人, 实际情况是,许多接口的方法没几个需要实现,大部分只需要直接返回E_NOTIMPL和S_OK, E_FAIL.

       让我们命名我们编写的容器叫 WebBrowser (可能名字有点糊涂,但是因为源代码中就是这个名字,所以就不改了,大家只需要注意,这个是一个WebBrowser控件的容器 ),   在实现这个容器后, 我们把他作为一个窗口类的父类,这样 就能实现WebBrowser的页面窗口.

      首先一个WB( WebBrowser) 容器需要以下接口:

    public IDispatch
    public IOleClientSite
    public IOleInPlaceSite
    public IOleInPlaceFrame

       每个接口需要实现的方法分别是:

        // IUnknown methods
    virtual STDMETHODIMP QueryInterface(REFIID iid,void**ppvObject);
    virtual STDMETHODIMP_(ULONG) AddRef();
    virtual STDMETHODIMP_(ULONG) Release();

    // IDispatch Methods
    HRESULT _stdcall GetTypeInfoCount(unsigned int * pctinfo);
    HRESULT _stdcall GetTypeInfo(unsigned int iTInfo,LCID lcid,ITypeInfo FAR* FAR* ppTInfo);
    HRESULT _stdcall GetIDsOfNames(REFIID riid,OLECHAR FAR* FAR* rgszNames,unsigned int cNames,LCID lcid,DISPID FAR* rgDispId);
    HRESULT _stdcall Invoke(DISPID dispIdMember,REFIID riid,LCID lcid,WORD wFlags,DISPPARAMS FAR* pDispParams,VARIANT FAR* pVarResult,EXCEPINFO FAR* pExcepInfo,unsigned int FAR* puArgErr);


    // IOleClientSite methods
    virtual STDMETHODIMP SaveObject();
    virtual STDMETHODIMP GetMoniker(DWORD dwA,DWORD dwW,IMoniker**pm);
    virtual STDMETHODIMP GetContainer(IOleContainer**pc);
    virtual STDMETHODIMP ShowObject();
    virtual STDMETHODIMP OnShowWindow(BOOL f);
    virtual STDMETHODIMP RequestNewObjectLayout();


    // IOleInPlaceSite methods
    virtual STDMETHODIMP GetWindow(HWND *p);
    virtual STDMETHODIMP ContextSensitiveHelp(BOOL);
    virtual STDMETHODIMP CanInPlaceActivate();
    virtual STDMETHODIMP OnInPlaceActivate();
    virtual STDMETHODIMP OnUIActivate();
    virtual STDMETHODIMP GetWindowContext(IOleInPlaceFrame** ppFrame,IOleInPlaceUIWindow **ppDoc,LPRECT r1,LPRECT r2,LPOLEINPLACEFRAMEINFO o);
    virtual STDMETHODIMP Scroll(SIZE s);
    virtual STDMETHODIMP OnUIDeactivate(int);
    virtual STDMETHODIMP OnInPlaceDeactivate();
    virtual STDMETHODIMP DiscardUndoState();
    virtual STDMETHODIMP DeactivateAndUndo();
    virtual STDMETHODIMP OnPosRectChange(LPCRECT);

    // IOleInPlaceFrame methods
    virtual STDMETHODIMP GetBorder(LPRECT l);
    virtual STDMETHODIMP RequestBorderSpace(LPCBORDERWIDTHS);
    virtual STDMETHODIMP SetBorderSpace(LPCBORDERWIDTHS w);
    virtual STDMETHODIMP SetActiveObject(IOleInPlaceActiveObject*pV,LPCOLESTR s);
    virtual STDMETHODIMP InsertMenus(HMENU h,LPOLEMENUGROUPWIDTHS x);
    virtual STDMETHODIMP SetMenu(HMENU h,HOLEMENU hO,HWND hw);
    virtual STDMETHODIMP RemoveMenus(HMENU h);
    virtual STDMETHODIMP SetStatusText(LPCOLESTR t);
    virtual STDMETHODIMP EnableModeless(BOOL f);
    virtual STDMETHODIMP TranslateAccelerator(LPMSG,WORD);

   这里插几句题外话, 我讨厌看文章, 因为萝莉罗嗦也没看到那个爆炸点, 就是你看到他,一下子思路有了头绪, 不再是一头雾水了.可惜,我看到的大部分文章都不是这样, 为了避免这个问题, 我在这里放个屁, 嗯,也算是一个小小的爆破吧.

      好,上面已经罗列了需要的接口和接口的方法.  

      要想实现WB的容器,你必须有这段代码:

WebBrowser::WebBrowser()
{
  //初始化OLE
  OleInitialize(0);
  //创建IStorage对象,其中_pStorage是WebBrowser的私有变量
  StgCreateDocfile(0,STGM_READWRITE | STGM_SHARE_EXCLUSIVE | STGM_DIRECT | STGM_CREATE,0,&_pStorage);

  //创建IOleObject对象,我们看到,短短的一条语句,已经几乎创建完成了WebBrowser!
  //this在这里时表示当前类(即WebBrowser)作为容器,承载_pOleObj这个控件
  //这里就是放屁现场了,大家好好看看哈.
 OleCreate( CLSID_WebBrowser,IID_IOleObject,OLERENDER_DRAW, 0 , this, _pStorage, (void**)&_pOleObj );

  //获得IOleInPlaceObject对象
  _pOleObj->QueryInterface(IID_IOleInPlaceObject,(LPVOID*)&_pInPlaceObj);

}

上面一段代码已经创建了wb的Ole对象, 接下来,你只需要打开WB,然后打开网页.我们用两个函数实现,他们是OpenWebBrowser() 和 OpenURL( VARIANT* pVarUrl )

 

OpenWebBrowser:

BOOL
WebBrowser::OpenWebBrowser()
{
    BOOL bRet = FALSE;

    // RECTWIDTH 和 RECTHEIGHT 是计算RECT长宽的宏函数
    // _rcWebWnd 是WebBrowser的私有RECT成员,就是GetHWND()的大小.
    // 下面的语句就是关联两者
    // GetHWND()获取容器的框架窗口句柄,就是我们创建的窗口,关于这个函数,下面会单独讲
    if( (RECTWIDTH(_rcWebWnd) && RECTHEIGHT(_rcWebWnd)) == 0 )
    ::GetClientRect( GetHWND() ,&_rcWebWnd);//设置WebBrowser的大小为窗口的客户区大小.

    // _bInPlaced 是WebBrowser的一个私有BOOL成员,初始为false
    // 一旦执行了OLEIVERB_INPLACEACTIVATE (就是下面的操作)后,立即设置为true,防止控件被多次放置在容器中
    // _GetOleObject()是WebBrowser的一个保护函数成员,他只是简单的返回_pOleObj
    // _pOleObj就是WB控件本身. 考虑到WebBrowser是一个基本类,以后必然被其他类继承,所以使用_GetOleObject()来返回_pOleObject,来实现防止_pOleObject本身不被修改的意外.
    if( _bInPlaced == false )// Activate In Place
    {
      _bInPlaced = true;//_bInPlaced must be set as true, before INPLACEACTIVATE, otherwise, once DoVerb, it would return error;
      _bExternalPlace = 0;//lParam;
      _GetOleObject()->DoVerb(OLEIVERB_INPLACEACTIVATE,0,this,0, GetHWND(),&_rcWebWnd);
      _bInPlaced = true;
    }

    bRet = TRUE;
RETURN:
    return bRet;
}

#include "WebBrowser.h"



/*
==================
|   构造和析构   |
==================
*/
WebBrowser::WebBrowser(void):
_refNum(0),
//_rcWebWnd(0),
_bInPlaced(false),
_bExternalPlace(false),
_bCalledCanInPlace(false),
_bWebWndInited(false),
_pOleObj(NULL),
_pInPlaceObj(NULL),
_pStorage(NULL),
_pWB2(NULL),
_pHtmlDoc2(NULL),
_pHtmlDoc3(NULL),
_pHtmlWnd2(NULL),
_pHtmlEvent(NULL)
{
    ::memset( (PVOID)&_rcWebWnd,0,sizeof(_rcWebWnd));
    HRTEST_SE( OleInitialize(0),L"Ole初始化错误");
    HRTEST_SE( StgCreateDocfile(0,STGM_READWRITE | STGM_SHARE_EXCLUSIVE | STGM_DIRECT | STGM_CREATE,0,&_pStorage),L"StgCreateDocfile错误");
    HRTEST_SE( OleCreate(CLSID_WebBrowser,IID_IOleObject,OLERENDER_DRAW,0,this,_pStorage,(void**)&_pOleObj),L"Ole创建失败");
    HRTEST_SE( _pOleObj->QueryInterface(IID_IOleInPlaceObject,(LPVOID*)&_pInPlaceObj),L"OleInPlaceObject创建失败");
RETURN:
    return;
}

WebBrowser::~WebBrowser(void)
{
}


/*
==================
|IUnknown methods|
==================
*/
STDMETHODIMP WebBrowser::QueryInterface(REFIID iid,void**ppvObject)
{
    *ppvObject = 0;
    if ( iid == IID_IOleClientSite )
        *ppvObject = (IOleClientSite*)this;
    if ( iid == IID_IUnknown )
        *ppvObject = this;
    if ( iid == IID_IDispatch )
        *ppvObject = (IDispatch*)this;
    if ( _bExternalPlace == false)
    {
        if ( iid == IID_IOleInPlaceSite )
            *ppvObject = (IOleInPlaceSite*)this;
        if ( iid == IID_IOleInPlaceFrame )
            *ppvObject = (IOleInPlaceFrame*)this;
        if ( iid == IID_IOleInPlaceUIWindow )
            *ppvObject = (IOleInPlaceUIWindow*)this;
    }
        /*
        这里是一点走私货, 留在以后讲,如果有机会,你可以发现,原来如此简单.
    if ( iid == DIID_DWebBrowserEvents2 )
        *ppvObject = (DWebBrowserEvents2 *)this;
    if ( iid == IID_IDocHostUIHandler)
        *ppvObject = (IDocHostUIHandler*)this;
        */
    if ( *ppvObject )
    {
        AddRef();
        return S_OK;
    }
    return E_NOINTERFACE;
}

STDMETHODIMP_(ULONG)  WebBrowser::AddRef()
{
    return ::InterlockedIncrement( &_refNum );
}

STDMETHODIMP_(ULONG)  WebBrowser::Release()
{
    return ::InterlockedDecrement( &_refNum );
}

/*
=====================
| IDispatch Methods |
=====================
*/
HRESULT _stdcall WebBrowser::GetTypeInfoCount(
    unsigned int * pctinfo)
{
    return E_NOTIMPL;
}

HRESULT _stdcall WebBrowser::GetTypeInfo(
    unsigned int iTInfo,
    LCID lcid,
    ITypeInfo FAR* FAR* ppTInfo)
{
    return E_NOTIMPL;
}

HRESULT _stdcall WebBrowser::GetIDsOfNames(REFIID riid,
  OLECHAR FAR* FAR* rgszNames,
  unsigned int cNames,
  LCID lcid,
  DISPID FAR* rgDispId )
{
    return E_NOTIMPL;
}

HRESULT _stdcall WebBrowser::Invoke(
    DISPID dispIdMember,
    REFIID riid,
    LCID lcid,
    WORD wFlags,
    DISPPARAMS* pDispParams,
    VARIANT* pVarResult,
    EXCEPINFO* pExcepInfo,
    unsigned int* puArgErr)
{
        /*走私货,留在以后讲,是关于DWebBrowserEvents2让人激动的实现,而且简单.
    // DWebBrowserEvents2
    if( dispIdMember == DISPID_DOCUMENTCOMPLETE)
    {
        DocumentComplete(pDispParams->rgvarg[1].pdispVal,pDispParams->rgvarg[0].pvarVal);
        return S_OK;
    }
    if( dispIdMember == DISPID_BEFORENAVIGATE2)
    {
        BeforeNavigate2( pDispParams->rgvarg[6].pdispVal,
                         pDispParams->rgvarg[5].pvarVal,
                         pDispParams->rgvarg[4].pvarVal,
                         pDispParams->rgvarg[3].pvarVal,
                         pDispParams->rgvarg[2].pvarVal,
                         pDispParams->rgvarg[1].pvarVal,
                         pDispParams->rgvarg[0].pboolVal);
        return S_OK;
    }
        */
    return E_NOTIMPL;
}

/*
========================
|IOleClientSite methods|
========================
*/
STDMETHODIMP WebBrowser::SaveObject()
{
    return S_OK;
}

STDMETHODIMP WebBrowser::GetMoniker(DWORD dwA,DWORD dwW,IMoniker**pm)
{
    *pm = 0;
    return E_NOTIMPL;
}

STDMETHODIMP WebBrowser::GetContainer(IOleContainer**pc)
{
    *pc = 0;
    return E_FAIL;
}

STDMETHODIMP WebBrowser::ShowObject()
{
    return S_OK;
}

STDMETHODIMP WebBrowser::OnShowWindow(BOOL f)
{
    return S_OK;
}

STDMETHODIMP WebBrowser::RequestNewObjectLayout()
{
    return S_OK;
}


/*
=========================
|IOleInPlaceSite methods|
=========================
*/
STDMETHODIMP WebBrowser::GetWindow(HWND *p)
{
    *p = GetHWND();
    return S_OK;
}

STDMETHODIMP WebBrowser::ContextSensitiveHelp(BOOL)
{
    return E_NOTIMPL;
}

STDMETHODIMP WebBrowser::CanInPlaceActivate()//If this function return S_FALSE, AX cannot activate in place!
{
    if ( _bInPlaced )//Does WebBrowser Control already in placed?
    {
        _bCalledCanInPlace = true;
        return S_OK;
    }
    return S_FALSE;
}

STDMETHODIMP WebBrowser::OnInPlaceActivate()
{
    return S_OK;
}

STDMETHODIMP WebBrowser::OnUIActivate()
{
    return S_OK;
}

STDMETHODIMP WebBrowser::GetWindowContext(IOleInPlaceFrame** ppFrame,IOleInPlaceUIWindow **ppDoc,LPRECT r1,LPRECT r2,LPOLEINPLACEFRAMEINFO o)
{

    *ppFrame = (IOleInPlaceFrame*)this;
    AddRef();
    *ppDoc = NULL;

    ::GetClientRect(  GetHWND() ,&_rcWebWnd );
    *r1 = _rcWebWnd;
    *r2 = _rcWebWnd;

    o->cb = sizeof(OLEINPLACEFRAMEINFO);
    o->fMDIApp = false;
    o->hwndFrame = GetParent( GetHWND() );
    o->haccel = 0;
    o->cAccelEntries = 0;

    return S_OK;
}

STDMETHODIMP WebBrowser::Scroll(SIZE s)
{
    return E_NOTIMPL;
}

STDMETHODIMP WebBrowser::OnUIDeactivate(int)
{
    return S_OK;
}

STDMETHODIMP WebBrowser::OnInPlaceDeactivate()
{
    return S_OK;
}

STDMETHODIMP WebBrowser::DiscardUndoState()
{
    return S_OK;
}

STDMETHODIMP WebBrowser::DeactivateAndUndo()
{
    return S_OK;
}

STDMETHODIMP WebBrowser::OnPosRectChange(LPCRECT)
{
    return S_OK;
}


/*
==========================
|IOleInPlaceFrame methods|
==========================
*/
STDMETHODIMP WebBrowser::GetBorder(LPRECT l)
{
    ::GetClientRect(  GetHWND() ,&_rcWebWnd );
    *l = _rcWebWnd;
    return S_OK;
}

STDMETHODIMP WebBrowser::RequestBorderSpace(LPCBORDERWIDTHS b)
{
    return S_OK;
}

STDMETHODIMP WebBrowser::SetBorderSpace(LPCBORDERWIDTHS b)
{
    return S_OK;
}

STDMETHODIMP WebBrowser::SetActiveObject(IOleInPlaceActiveObject*pV,LPCOLESTR s)
{
    return S_OK;
}

STDMETHODIMP WebBrowser::SetStatusText(LPCOLESTR t)
{
    return E_NOTIMPL;
}

STDMETHODIMP WebBrowser::EnableModeless(BOOL f)
{
    return E_NOTIMPL;
}

STDMETHODIMP WebBrowser::TranslateAccelerator(LPMSG,WORD)
{
    return E_NOTIMPL;
}

HRESULT _stdcall WebBrowser::RemoveMenus(HMENU h)
{
    return E_NOTIMPL;
}

HRESULT _stdcall WebBrowser::InsertMenus(HMENU h,LPOLEMENUGROUPWIDTHS x)
{
    return E_NOTIMPL;
}
HRESULT _stdcall WebBrowser::SetMenu(HMENU h,HOLEMENU hO,HWND hw)
{
    return E_NOTIMPL;
}


/*
====================
|DWebBrowserEvents2|
====================
*/
/* 走私货,以后再讲
void
WebBrowser::DocumentComplete( IDispatch *pDisp,VARIANT *URL)
{
        //老天保佑,多好的函数啊.
    return ;
}



void
WebBrowser::BeforeNavigate2( IDispatch *pDisp,VARIANT *&url,VARIANT *&Flags,VARIANT *&TargetFrameName,VARIANT *&PostData,VARIANT *&Headers,VARIANT_BOOL *&Cancel)
{
    PCWSTR pcwApp = L"app:";
    if( url->vt != VT_BSTR )
        return;
    if( 0 == _wcsnicmp( pcwApp, url->bstrVal,wcslen(pcwApp)) )
    {
        *Cancel = VARIANT_TRUE;
        _OnHtmlCmd( url->bstrVal+wcslen(pcwApp) );
        return;
    }
    *Cancel = VARIANT_FALSE;
}
*/
/*
=====================
| IDocHostUIHandler |
=====================
*/
/*
传说中的IDocHostUIHanler,同样留在以后讲
HRESULT WebBrowser:: ShowContextMenu(
    DWORD dwID,
    POINT *ppt,
    IUnknown *pcmdtReserved,
    IDispatch *pdispReserved){return E_NOTIMPL;}

HRESULT WebBrowser:: GetHostInfo(
                                        DOCHOSTUIINFO *pInfo){return E_NOTIMPL;}

HRESULT WebBrowser:: ShowUI(
                                   DWORD dwID,
                                   IOleInPlaceActiveObject *pActiveObject,
                                   IOleCommandTarget *pCommandTarget,
                                   IOleInPlaceFrame *pFrame,
                                   IOleInPlaceUIWindow *pDoc){return E_NOTIMPL;}

HRESULT WebBrowser:: HideUI( void){return E_NOTIMPL;}

HRESULT WebBrowser:: UpdateUI( void){return E_NOTIMPL;}

//HRESULT WebBrowser:: EnableModeless(
//  BOOL fEnable){return E_NOTIMPL;}

HRESULT WebBrowser:: OnDocWindowActivate(
    BOOL fActivate){return E_NOTIMPL;}

HRESULT WebBrowser:: OnFrameWindowActivate(
    BOOL fActivate){return E_NOTIMPL;}

HRESULT WebBrowser:: ResizeBorder(
    LPCRECT prcBorder,
    IOleInPlaceUIWindow *pUIWindow,
    BOOL fRameWindow){return E_NOTIMPL;}

HRESULT WebBrowser:: TranslateAccelerator(
    LPMSG lpMsg,
    const GUID *pguidCmdGroup,
    DWORD nCmdID){return E_NOTIMPL;}

HRESULT WebBrowser:: GetOptionKeyPath(
    LPOLESTR *pchKey,
    DWORD dw){return E_NOTIMPL;}

HRESULT WebBrowser:: GetDropTarget(
    IDropTarget *pDropTarget,
    IDropTarget **ppDropTarget)
{
    return E_NOTIMPL;//使用默认拖拽
    //return S_OK;//自定义拖拽
}

HRESULT WebBrowser:: GetExternal( IDispatch **ppDispatch)
{
    return E_NOTIMPL;
}

HRESULT WebBrowser:: TranslateUrl(
    DWORD dwTranslate,
    OLECHAR *pchURLIn,
    OLECHAR **ppchURLOut){return E_NOTIMPL;}

HRESULT WebBrowser:: FilterDataObject(
    IDataObject *pDO,
    IDataObject **ppDORet){return E_NOTIMPL;}
*/


/*
===============
|Other Methods|
===============
*/
IWebBrowser2*
WebBrowser::GetWebBrowser2()
{
    if( _pWB2 != NULL )
        return _pWB2;
    NULLTEST_SE( _pOleObj,L"Ole对象为空");
    HRTEST_SE( _pOleObj->QueryInterface(IID_IWebBrowser2,(void**)&_pWB2),L"QueryInterface IID_IWebBrowser2 失败");
    return _pWB2;
RETURN:
    return NULL;
}

IHTMLDocument2*
WebBrowser::GetHTMLDocument2()
{
    if( _pHtmlDoc2 != NULL )
        return _pHtmlDoc2;
    IWebBrowser2* pWB2 = NULL;
    NULLTEST(pWB2 = GetWebBrowser2());//GetWebBrowser2已经将错误原因交给LastError.
    IDispatch* pDp =  NULL;
    HRTEST_SE(pWB2->get_Document(&pDp),L"DWebBrowser2::get_Document 错误");
    HRTEST_SE(pDp->QueryInterface(IID_IHTMLDocument2,(void**)&_pHtmlDoc2),L"QueryInterface IID_IHTMLDocument2 失败");
    return _pHtmlDoc2;
RETURN:
    return NULL;
}
IHTMLDocument3*
WebBrowser::GetHTMLDocument3()
{
    if( _pHtmlDoc3 != NULL )
        return _pHtmlDoc3;

    IWebBrowser2* pWB2 = NULL;
    NULLTEST(pWB2 = GetWebBrowser2());//GetWebBrowser2已经将错误原因交给LastError.
    IDispatch* pDp =  NULL;
    HRTEST_SE(pWB2->get_Document(&pDp),L"DWebBrowser2::get_Document 错误");
    HRTEST_SE(pDp->QueryInterface(IID_IHTMLDocument3,(void**)&_pHtmlDoc3),L"QueryInterface IID_IHTMLDocument3 失败");
    return _pHtmlDoc3;
RETURN:
    return NULL;
}

IHTMLWindow2*
WebBrowser::GetHTMLWindow2()
{
    if( _pHtmlWnd2 != NULL)
        return _pHtmlWnd2;
    IHTMLDocument2*  pHD2 = GetHTMLDocument2();
    NULLTEST( pHD2 );
    HRTEST_SE( pHD2->get_parentWindow(&_pHtmlWnd2),L"IHTMLWindow2::get_parentWindow 错误" );
    return _pHtmlWnd2;
RETURN:
    return NULL;
}

IHTMLEventObj*
WebBrowser::GetHTMLEventObject()
{
    if( _pHtmlEvent != NULL )
        return _pHtmlEvent;
    IHTMLWindow2* pHW2;
    NULLTEST( pHW2 = GetHTMLWindow2() );
    HRTEST_SE( pHW2->get_event(&_pHtmlEvent),L"IHTMLWindow2::get_event 错误");
    return _pHtmlEvent;
RETURN:
    return NULL;
}

BOOL
WebBrowser::SetWebRect(LPRECT lprc)
{
    BOOL bRet = FALSE;
    if( false == _bInPlaced )//尚未OpenWebBrowser操作,直接写入_rcWebWnd
    {
       _rcWebWnd = *lprc;
    }
    else//已经打开WebBrowser,通过 IOleInPlaceObject::SetObjectRects 调整大小
    {
        SIZEL size;
        size.cx = RECTWIDTH(*lprc);
        size.cy = RECTHEIGHT(*lprc);

        IOleObject* pOleObj;
        NULLTEST( pOleObj= _GetOleObject());
        HRTEST_E( pOleObj->SetExtent(  1,&size ),L"SetExtent 错误");

        IOleInPlaceObject* pInPlace;
        NULLTEST( pInPlace = _GetInPlaceObject());
        HRTEST_E( pInPlace->SetObjectRects(lprc,lprc),L"SetObjectRects 错误");
        _rcWebWnd = *lprc;
    }
    bRet = TRUE;
RETURN:
    return bRet;
}

BOOL
WebBrowser::OpenWebBrowser()
{
    BOOL bRet = FALSE;
    NULLTEST_E( _GetOleObject(),L"ActiveX对象为空" );//对于本身的实现函数,其自身承担错误录入工作

    if( (RECTWIDTH(_rcWebWnd) && RECTHEIGHT(_rcWebWnd)) == 0 )
        ::GetClientRect( GetHWND() ,&_rcWebWnd);//设置WebBrowser的大小为窗口的客户区大小.

    if( _bInPlaced == false )// Activate In Place
    {
        _bInPlaced = true;//_bInPlaced must be set as true, before INPLACEACTIVATE, otherwise, once DoVerb, it would return error;
        _bExternalPlace = 0;//lParam;

        HRTEST_E( _GetOleObject()->DoVerb(OLEIVERB_INPLACEACTIVATE,0,this,0, GetHWND()  ,&_rcWebWnd),L"关于INPLACE的DoVerb错误");
        _bInPlaced = true;


        //* 挂接DWebBrwoser2Event
        IConnectionPointContainer* pCPC = NULL;
        IConnectionPoint*          pCP  = NULL;
        HRTEST_E( GetWebBrowser2()->QueryInterface(IID_IConnectionPointContainer,(void**)&pCPC),L"枚举IConnectionPointContainer接口失败");
        HRTEST_E( pCPC->FindConnectionPoint( DIID_DWebBrowserEvents2,&pCP),L"FindConnectionPoint失败");
        DWORD dwCookie = 0;
        HRTEST_E( pCP->Advise( (IUnknown*)(void*)this,&dwCookie),L"IConnectionPoint::Advise失败");
    }


    bRet = TRUE;
RETURN:
    return bRet;
}

BOOL
WebBrowser::OpenURL(VARIANT* pVarUrl)
{
    BOOL bRet = FALSE;
    HRTEST_E( GetWebBrowser2()->Navigate2( pVarUrl,0,0,0,0),L"GetWebBrowser2 失败");
    bRet = TRUE;
RETURN:
    return bRet;
}

五.例子

     

class WebBrowserWindow :
    public WebBrowser
{
public:
    WebBrowserWindow(void);
    ~WebBrowserWindow(void);
public:
    virtual HWND GetHWND(){ return YourWindow};

private:
    LRESULT OnCreate( WPARAM wParam,LPARAM lParam);
    //您可以在OnCreate中调用OpenWebBrowser 然后调用 OpenURL
};