如何利用IHTMLDocument2获取<object classid=...>***</object>中的数据？

解决方案 »

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http://mgd0629.blog.163.com/blog/static/64948503200782433531902/参考
你的是IHTMLDocument 的接口，不过你可以通过IHTMLDocument 去QueryInterface IHTMLDocument3
IHTMLDocument3中有个函数getElementsByTagName，然后过滤出你想要的那个HTMLELEMENT，得到HTMLELEMENT了之后getAttribute（）函数可能会得到你想要的，不妨试试。
“a.htm”的部分源码如下：
<table width="640px" height="440" border="0" cellpadding="0" cellspacing="0" bgcolor="#FFFFFF" class="tdheight">
  <tr>
    <td valign="top"><iframe frameborder="0" height="440px" width="100%" src="a1.htm" id="winall" name="winall" title="winall"></iframe></td>
  </tr>
</table>
其中嵌入了"a1.htm"
"a1.htm"中的源码如下：
<body>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
  <tr>
    <td><object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,19,0" width="550" height="300">
      <param name="movie" value="an.swf" />
      <param name="quality" value="high" />
      <embed src="an.swf" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="550" height="300"></embed>
    </object></td>
  </tr>
</table>
</body>
现在的具体情况是这样的：
当我把鼠标放在"a.htm"中的<iframe>上时，我能提取它的src="a1.htm" ,然后我又用一个CWebBrowser2对象打开"a1.htm"。用IHTMLDocument2::get_embeds()和IHTMLDocument2::get_all()都能得到一个有效的IHTMLElementCollection的指针，但是然后使用IHTMLElementCollection::get_length()得到的值始终为0，
问题就出在这个里，请问怎样解决？
用IHTMLDocument2::get_embeds()和IHTMLDocument2::get_all()都能得到一个有效的IHTMLElementCollection的指针，但是然后使用IHTMLElementCollection::get_length()
------------------------------
这些代码贴出来
//1.用IHTMLDocument2::get_embeds()
CWebBrowser2 *ptempWeb = (CWebBrowser2 *)GetDlgItem(IDC_EXPLORER2);
ptempWeb->Navigate(tempPath, 0, 0, 0, 0);
long len=0;
HRESULT temphr = S_OK;
IHTMLElement *templink = NULL;
IHTMLDocument2* ptempHTMLDoc = NULL;
IDispatch* ptempDoc=ptempWeb->GetDocument();
ptempDoc->QueryInterface(IID_IHTMLDocument2, (void**)&ptempHTMLDoc);
CComQIPtr< IHTMLElementCollection > pElementCollectionEmbeds;
ptempHTMLDoc->get_embeds(&pElementCollectionEmbeds);
pElementCollectionEmbeds->get_length(&len); CWebBrowser2 *ptempWeb = (CWebBrowser2 *)GetDlgItem(IDC_EXPLORER2);
//2.用IHTMLDocument2::get_all() ptempWeb->Navigate(tempPath, 0, 0, 0, 0);
long len=0;
HRESULT temphr = S_OK;
IHTMLElement *templink = NULL;
IHTMLDocument2* ptempHTMLDoc = NULL;
IDispatch* ptempDoc=ptempWeb->GetDocument();
ptempDoc->QueryInterface(IID_IHTMLDocument2, (void**)&ptempHTMLDoc);
CComQIPtr< IHTMLElementCollection > pElementCollectionAll;
ptempHTMLDoc->get_all(&pElementCollectionAll);
BSTR bstrObject;
CString strObject;
pElementCollectionAll->toString(&bstrObject);
strObject = SysAllocString(bstrObject);//此处得到的是[object]
pElementCollectionAll->get_length(&len);
//两种方法得到解决的len全部是0
试试这样，枚举IHTMLElementCollection里面的IHTMLElement，然后IHTMLEmbedElement* pEmbed;
pItem->QueryInterface(IID_IHTMLEmbedElement, (void**)&pEmbed);看能不能得到有效的IHTMLEmbedElement
bool CMyInternetExplorer::FindAnchor (bool bClick, bool bFocus,
      bool bName, bool bOuterText, bool bTooltip, bool bURL,
      LPCTSTR sName, LPCTSTR sOuterText, LPCTSTR sTooltip, LPCTSTR sURL)
{
    ASSERT (m_pWebBrowser != NULL);
    if (m_pWebBrowser == NULL)
        return false;

    HRESULT hr;
    IDispatch* pHtmlDocDispatch = NULL;
    IHTMLDocument2 * pHtmlDoc = NULL;
    bool bSearch = true;    // Retrieve the document object.    hr = m_pWebBrowser->get_Document (&pHtmlDocDispatch);
    if (SUCCEEDED (hr) && (pHtmlDocDispatch != NULL))
    {
        hr = pHtmlDocDispatch->QueryInterface
            (IID_IHTMLDocument2,  (void**)&pHtmlDoc);
        if (SUCCEEDED (hr) && (pHtmlDoc != NULL))
        {
            IHTMLElementCollection* pColl = NULL;
            hr = pHtmlDoc->get_all (&pColl);            if (SUCCEEDED (hr) && (pColl != NULL))
            {
                // Obtained the Anchor Collection...                long nLength = 0;
                pColl->get_length (&nLength);

                for (int i = 0; i < nLength && bSearch; i++)
                {
                    COleVariant vIdx ((long)i, VT_I4);

                    IDispatch* pElemDispatch = NULL;
                    IHTMLElement * pElem = NULL;

                    hr = pColl->item (vIdx, vIdx, &pElemDispatch);

                    if (SUCCEEDED (hr) &&
                                 (pElemDispatch != NULL))
                    {
                        hr = pElemDispatch->QueryInterface
                           (IID_IHTMLElement, (void**)&pElem);

                        if (SUCCEEDED (hr) && (pElem != NULL))
                        {
                            BSTR bstrTagName;
                            CString sTempTagName;
                            if (!FAILED (pElem->get_tagName
                                                 (&bstrTagName)))
                            {
                                sTempTagName = bstrTagName;
                                SysFreeString (bstrTagName);
                            }

                            if (sTempTagName == _T ("a") ||
                                        sTempTagName == _T ("A"))
                            {
                                IHTMLAnchorElement * pAnchor = NULL;
                                hr = pElemDispatch->QueryInterface
                                   (IID_IHTMLAnchorElement,
                                   (void**)&pAnchor);

                                if (SUCCEEDED (hr) &&
                                               (pAnchor != NULL))
                                {
                                    BSTR bstrName, bstrOuterText,
                                                 bstrURL, bstrTooltip;
                                    CString sTempName, sTempOuter,
                                                sTempURL, sTempTooltip;

                                    if (!FAILED (pElem->get_outerText
                                                      (&bstrOuterText)))
                                    {
                                        sTempOuter = bstrOuterText;
                                        SysFreeString (bstrOuterText);
                                    }
                                    if (!FAILED
                                      (pElem->get_title
                                      (&bstrTooltip)))
                                    {
                                        sTempTooltip = bstrTooltip;
                                        SysFreeString (bstrTooltip);
                                    }
                                    if
                                      (!FAILED (pAnchor->get_name
                                      (&bstrName)))
                                    {
                                        sTempName = bstrName;
                                        SysFreeString (bstrName);
                                    }
                                    if (!FAILED (pAnchor->get_href
                                       (&bstrURL)))
                                    {
                                        sTempURL = bstrURL;
                                        SysFreeString (bstrURL);
                                    }                                    // Do the comparison here!                                    bool bMatches = true;
                                    if (bMatches && bName)
                                    {
                                      if
                                      (!StringHelper::WildcardCompareNoCase
                                      (sName, sTempName))
                                            bMatches = false;
                                    }
                                    if (bMatches && bOuterText)
                                    {
                                      if
                                       (!StringHelper::WildcardCompareNoCase
                                       (sOuterText, sTempOuter))
                                            bMatches = false;
                                    }
                                    if (bMatches && bURL)
                                    {
                                      if
                                       (!StringHelper::WildcardCompareNoCase
                                       (sURL, sTempURL))
                                            bMatches = false;
                                    }
                                    if (bMatches && bTooltip)
                                    {
                                      if
                                      (!StringHelper::WildcardCompareNoCase
                                        (sTooltip, sTempTooltip))
                                            bMatches = false;
                                    }

                                    if (bMatches)
                                    {
                                        // No need to search more!                                        bSearch = false;

                                        if (bFocus)
                                            pAnchor->focus ();
                                        if (bClick)
                                            pElem->click ();
                                    }
                                    pAnchor->Release ();
                                }
                            }
                            pElem->Release ();
                        }
                        pElemDispatch->Release ();
                    }
                }
                pColl->Release ();
            }
            pHtmlDoc->Release();
        }
        pHtmlDocDispatch->Release ();
    }

    if (bSearch == false)
        return true;    return false;
}
搜索元素可尝试如上代码
http://vckbase.com/document/viewdoc/?id=288