我正在开发一个广告/弹出窗口拦截器 BHO,我正在尝试从事件“下载完成”访问网站的 html,因此我可以过滤所有广告和恶意 uri。
我的代码看起来像这样:
case DISPID_DOWNLOADCOMPLETE:
{
if(iBrowser) //IWebBrowser2*
{
HRESULT hr;
IUnknown *pUnkBrowser = NULL;
hr = iBrowser->QueryInterface(IID_IUnknown, (void**)&pUnkBrowser);
if( SUCCEEDED(hr) && pUnkBrowser!=NULL)
{
if( SUCCEEDED(hr) )
{
IDispatch* pHtmlDocDispatch = NULL;
IHTMLDocument2 * pHtmlDoc = NULL;
hr = iBrowser->get_Document (&pHtmlDocDispatch);
if (SUCCEEDED (hr) && (pHtmlDocDispatch != NULL))
{
hr = pHtmlDocDispatch->QueryInterface (IID_IHTMLDocument2, (void**)&pHtmlDoc);
if (SUCCEEDED (hr) && (pHtmlDoc != NULL))
{
IHTMLElement *pBody = 0;
pHtmlDoc->get_body( &pBody );
// I want to get the html here and filter out the ads but pBody is always null
if(pHtmlDoc) pHtmlDoc->Release();
}
if(pHtmlDocDispatch) pHtmlDocDispatch->Release();
}
}
if(pUnkBrowser) pUnkBrowser->Release();
}
}
return S_OK;
}
break;
我如何访问和修改此事件的 html?