无法获取到弹出新的IE窗口的IWebBrowser2

[zshwlw]

#include <windows.h>
#include <exdisp.h>
#include <ExDispID.h>
#include <atlbase.h>
#include <AtlConv.h>
#include <exception>

VOID CALLBACK TimerProc(HWND hwnd, UINT uMsg, UINT_PTR idEvent, DWORD dwTime);

class CEventSink : public IDispatch
{
protected:
    DWORD m_dwRef;

public:
    CEventSink(){m_dwRef = 0;}
    ~CEventSink(){m_dwRef--;}

    STDMETHODIMP QueryInterface(REFIID riid, void** ppv)
    {
        *ppv = NULL;
        
        if (riid == IID_IUnknown || riid == IID_IDispatch)
            *ppv = this;
        
        if (*ppv)
        {
            ((LPUNKNOWN)*ppv)->AddRef();
            return (S_OK);
        }
        return E_NOINTERFACE;
    }

    STDMETHODIMP_(ULONG) AddRef()
    {
        return ++m_dwRef;
    }

    STDMETHODIMP_(ULONG) Release()
    {
        if (--m_dwRef)
            return m_dwRef;
        delete this;
        return 0;
    }

    STDMETHODIMP GetTypeInfoCount( UINT* pctinfo )
    {
        *pctinfo = 0;
        return S_OK;
    }

    STDMETHODIMP GetTypeInfo(UINT itinfo, LCID lcid, ITypeInfo** pptinfo)
    {
        if ( pptinfo )
            *pptinfo = 0;
        return E_NOTIMPL;
    }

    STDMETHODIMP GetIDsOfNames(REFIID riid, OLECHAR** rgszNames, UINT cNames, LCID lcid, DISPID* rgdispid)
    {
        return S_OK;
    }

    STDMETHODIMP CEventSink::Invoke(DISPID dispidMember,
        REFIID riid,
        LCID lcid,
        WORD wFlags,
        DISPPARAMS* pdispparams,
        VARIANT* pvarResult,
        EXCEPINFO* pexcepinfo,
        UINT* puArgErr)
    {
        switch (dispidMember)
        {
                case DISPID_NEWWINDOW2:
            CComQIPtr<IWebBrowser2, &IID_IWebBrowser2> spBrowser;
            try
            {
//此处发生异常
                spBrowser = pdispparams->rgvarg[1].pdispVal;
            }
            catch (...)
            {
                MessageBox(NULL, "123", "", MB_OK);
            }

            break;
        }
        return S_OK;
    }
};

IUnknown *sink = NULL;

int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
    MSG msg;

    CoInitialize(NULL);

    SetTimer(NULL, 1, 5000, (TIMERPROC)TimerProc);

    sink = new CEventSink;

    while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

     delete sink;

    CoUninitialize();

    return 0;
}

VOID CALLBACK TimerProc(HWND hwnd, UINT uMsg, UINT_PTR idEvent, DWORD dwTime)
{
    IWebBrowser2 *pWBApp = NULL;
    IConnectionPointContainer* pCPC = NULL;
    IConnectionPoint* pCP = NULL;
    DWORD dwCookie;

    CoCreateInstance(CLSID_InternetExplorer,
        NULL, 
        CLSCTX_SERVER,
        IID_IWebBrowser2,
        (LPVOID*)&pWBApp);
    pWBApp->QueryInterface(IID_IConnectionPointContainer, (void**)&pCPC);
    pCPC->FindConnectionPoint(DIID_DWebBrowserEvents2, &pCP);
    
    pCP->Advise(sink, &dwCookie);

    BSTR bstrURL = NULL;
    VARIANT vFlags = {0}, vTargetFrameName = {0}, vPostData = {0}, vHeaders = {0};

    bstrURL = SysAllocString(L"http://192.168.0.90:81/index.html");
    pWBApp->Navigate(bstrURL, &vFlags, &vTargetFrameName, &vPostData, &vHeaders);
    pWBApp->put_Visible(VARIANT_TRUE);
}

我在打开的网页中加入的JS代码弹出新的IE窗口，我想要获取新弹出IE窗口的句柄，
但是下面这行代码发生异常，导致不能获取IWebBrowser2，请高手指点如何才能获取IWebBrowser2。
spBrowser = pdispparams->rgvarg[1].pdispVal;

[zshwlw]

自己顶一下，希望大家帮忙

[zshwlw]

顶一下

[zshwlw]

再顶一下,请大家帮帮忙啊

[zshwlw]

再顶一顶，希望大家帮助我啊

[controstr]

在函数

Invoke(DISPID dispidMember,REFIID riid, LCID lcid, WORD wFlags,
                     DISPPARAMS * pDispParams, VARIANT * pvarResult,
                     EXCEPINFO * pexcepinfo, unsigned int FAR * puArgErr)
{
  switch ( dispidMember )
  {
    case DISPID_NEWWINDOW3:
   /*  
      参数pDispParams->rgvarg是一个数组，其中值如下
       //0 : bstrUrl, 1 : bstrContext, 2 : dwFlags, 3 : *bCancel, 4 : **pDisp
      你可以根据第4个参数来得到你要的值
   */
  }
}

[zshwlw]

我用的是VC6，没有DISPID_NEWWINDOW3宏定义，按照msdn上的说法响应DISPID_NEWWINDOW2这个消息也是可以的，并且rgvarg[1]就是**pDisp

[zshwlw]

再顶一顶，希望大家帮助我啊