设置designMode不成功，哪位大侠帮帮我看看

Question

我想保存对网页的动态修改，将IWebBrowser设置为designMode,可是设置成designmode.还是跟普通页一样不能编辑     AFX_MANAGE_STATE(AfxGetStaticModuleState()); CComQIPtr<IWebBrowser2> spReport; HRESULT hr ;
hr = CoCreateInstance(CLSID_InternetExplorer, NULL, CLSCTX_LOCAL_SERVER, 
IID_IWebBrowser2, (void**)(&spReport)); //spReport->put_Visible(TRUE);
//spReport->GoHome(); if (SUCCEEDED(hr))
{
m_sReport = spReport;
}
VARIANT vaURL;
vaURL.vt = VT_BSTR;   
vaURL.bstrVal= _bstr_t(ResourceToURL("template.htm"));
hr = m_sReport->Navigate2(&vaURL, &vtMissing,&vtMissing,&vtMissing,&vtMissing);
if(FAILED(hr))
   return S_FALSE; LPDISPATCH lpDispatch;
hr = m_sReport->get_Document(&lpDispatch); if (FAILED(hr))
{
     return S_FALSE;
} //get html document from IDispatch
hr=lpDispatch->QueryInterface(IID_IHTMLDocument2, (void**)&m_pHtmlDoc2);
if(hr!=S_OK) 
{
      return S_FALSE;
} m_pHtmlDoc2->put_designMode(L"On");
hr = m_pHtmlDoc2->QueryInterface(IID_IPersistFile,(void **) &m_pFile);