怎么获取html的某个元素,MSHTML怎么获取一个网页元素对象

C/C++ code//获取IHTMLDocument2

IHTMLDocument2 *pDoc2;

IHTMLFramesCollection2 *pFc2;

HWND hIE = (HWND)hWnd;

UINT msg = RegisterWindowMessage(TEXT("WM_HTML_GETOBJECT"));

DWORD_PTR Res;

SendMessageTimeout(hIE,msg,NULL,NULL,SMTO_ABORTIFHUNG,1000,&Res);

HRESULT hres = ObjectFromLresult(Res,IID_IHTMLDocument2,NULL,(void **)&pDoc2);

IHTMLElementCollection *pEc;

IHTMLElement *pE;

IDispatch *pDis;

IHTMLTable * pT;

VARIANT varindex,varname;

long len;

BSTR bstr;

VariantInit(&varindex);

VariantInit(&varname);

varindex.vt = VT_I4;

pDoc2->get_all(&pEc); //pDoc2是IHTMLDocument2

pEc->get_length(&len);

for(long i = 0;i < len;++i)

{

varindex.lVal = i;

pEc->item(varname,varindex,&pDis);

pDis->QueryInterface(IID_IHTMLElement,(void **)&pE);

pE->get_innerHTML(&bstr);

pE->Release();

pDis->Release();

}

//long p;

//pEc->get_length(&p);

//pEc->tags(CComVariant("table"),&pDis);

//pDis->QueryInterface(IID_IHTMLTable,(void **)&pT);

//pT->Release();

pEc->Release();