获取网页元素id

 

HRESULT hr;

VARIANT index;

IDispatch *pDisp;

pDisp = m_webBrowser.get_Document(); //m_webBrowser是控件型变量

IHTMLDocument2* pDoc; //文档接口

hr = pDisp->QueryInterface( IID_IHTMLDocument2, (void**)&pDoc );

 

IHTMLElementCollection* pColl = NULL;                //枚举网页元素

 

hr = pDoc->get_all( &pColl );

 

LONG elementcount;

hr = pColl->get_length( &elementcount );//Find the count of the elements

for ( int i=0; i< elementcount; i++ )//Loop through each elment

{

IDispatch* pDisp2;

 

V_VT(&index) = VT_I4;

V_I4(&index) = i;

hr = pColl->item( index,index, &pDisp2 );//Get an element

 

if ( hr == S_OK )

{

IHTMLElement* pElmt;         //网页元素

hr = pDisp2->QueryInterface(IID_IHTMLElement,(void **)&pElmt );

if ( hr == S_OK )

{

BSTR bstr = SysAllocString(L"");

pElem->get_id(&bstr); //获得网页元素id

pElmt->Release();

}

pDisp2->Release();

}

}

 

pColl->Release();

pDoc->Release();

pDisp->Release();