WebBrowser 中遍历所有的frames

 

枚举所有iframe的IWebBrowser2

// 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;

   // Get an enumerator for the frames.
   //
   IEnumUnknown* pEnumerator;

   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++)
   {
      // QI for IWebBrowser here to see whether we have 
      // an embedded browser.
      IWebBrowser2* pWebBrowser;

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

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

   pEnumerator->Release();
}

 

枚举所有iframe的element

HRESULT hr = S_OK;

    try
    {
        CComPtr<IDispatch> spDispDoc;
        hr = m_spWebBrowser->get_Document(&spDispDoc);

        // find all iframe elements and filter by id, then insert ad js
        CComQIPtr<IHTMLDocument2> spDoc2 = spDispDoc;

        if(spDoc2){
            CComQIPtr<IHTMLElementCollection> spAll;
            hr = spDoc2->get_all(&spAll);
            if (SUCCEEDED(hr)) {
                CComPtr<IDispatch> spDispObjects;
                // just handle iframes as example
                CComVariant varTag = _T("IFRAME"); 
                varTag.vt = VT_BSTR;
                hr = spAll->tags(varTag, &spDispObjects);

                if(SUCCEEDED(hr))
                {
                    CComQIPtr<IHTMLElementCollection> spElementCollection = spDispObjects;
                    long lObjectCount = 0;
                    if( spElementCollection )
                        hr = spElementCollection->get_length(&lObjectCount);if (SUCCEEDED(hr) && lObjectCount > 0)
                    {
                        for (int i = 0; i < lObjectCount; i++)
                        {
                            CComVariant vIndex = i;
                            CComVariant vEmpty;
                            CComPtr<IDispatch> spdispObject;
                            hr = spElementCollection->item(vIndex, vEmpty, &spdispObject);
                            if (SUCCEEDED(hr))
                            {
                                CComQIPtr<IHTMLElement> spElement = spdispObject;
                                if (spElement)
                                {
                                    CComBSTR bstrId = _T("");;
                                    long width = 0, height = 0;
                                    spElement->get_id(&bstrId);
                                    spElement->get_offsetHeight(&height);
                                    spElement->get_offsetWidth(&width);

                                    if(!IsAcceptableSize(width, height))
                                        continue;

　　　　　　　　　　　　　　　　　　　　　CComVariant vSrcUrl = _T("");
                                    hr = spElement->getAttribute(_T("src"), 0, &vSrcUrl);

 } } } } } } } } catch(_com_error &ex) { LPCTSTR errMsg = ex.ErrorMessage(); WriteLog(_T("_com_error: ") + CString(errMsg)); } return hr;