How to get the WebBrowser object model of an HTML frame

// Get the IDispatch of the document
LPDISPATCH lpDisp = NULL;
lpDisp = m_webBrowser.GetDocument();

if (lpDisp)
{
   IOleContainer* pContainer;

   // Get the container
   HRESULT hr = lpDisp->QueryInterface(IID_IOleContainer,
                                       (void**)&pContainer);
   lpDisp->Release();

   if (FAILED(hr))
      return hr;

   IEnumUnknown* pEnumerator;

   // Get an enumerator for the frames
   hr = pContainer->EnumObjects(OLECONTF_EMBEDDINGS, &pEnumerator);
   pContainer->Release();

   if (FAILED(hr))
      return hr;

   IUnknown* pUnk;
   ULONG uFetched;

   // Enumerate and refresh all the frames
   for (UINT i = 0; S_OK == pEnumerator->Next(1, &pUnk, &uFetched); i++)
   {
      IWebBrowser2* pBrowser;

      hr = pUnk->QueryInterface(IID_IWebBrowser2, (void**)&pBrowser);
      pUnk->Release();

      if (SUCCEEDED(hr))
      {
         // Refresh the frame
         pBrowser->Refresh();
         pBrowser->Release();
      }
   }

   pEnumerator->Release();
}