MFC: Sign in and get web page source

Hi everybody

I need to submit a form in the web page.

I need to:
1. Sign in.
2. Fill in all required fields and submit the form.

I'm using IWebBrowser interface, and I know how to submit form using IHTMLDOcument2 interface. But I don't want the IWebBrowser display the web page itself(I should use as low bandwidth as possible). How I can eliminate the downloading of images and also get the IHTMLDocument as fast as possible?

I could use CInternetSession::OpenURL(_T("http://something.com"));
But then I cannot get the IHTMLDcocument2 interface, therefore cannot submit the form.

Thank you.

I think I found solution:
Thanks to this article: http://www.codeguru.com/cpp/i-n/iepr...cle.php/c4385/

I made this function based on that article:

Code:

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BOOL CWebBrowsingDlg::GetHtmlDoc(LPCTSTR source, IHTMLDocument2* &result){

        IHTMLDocument2* pDoc=NULL;
        HRESULT hr=NULL;
        if(!SUCCEEDED(CoInitialize(NULL))) return FALSE;
        hr=CoCreateInstance(CLSID_HTMLDocument,NULL,CLSCTX_INPROC_SERVER,IID_IHTMLDocument2,(LPVOID*)&pDoc);

        if (SUCCEEDED(hr)&&pDoc){
                IPersistStreamInit* pPersist=NULL;
                hr=pDoc->QueryInterface(IID_IPersistStreamInit,(LPVOID*)&pPersist);
                if (SUCCEEDED(hr)&&pPersist){
                        IMarkupServices* pMS=NULL;
                        pPersist->InitNew();
                        pPersist->Release();
                        hr=pDoc->QueryInterface(IID_IMarkupServices,(LPVOID*)&pMS);
                        if (SUCCEEDED(hr)&&pMS){
                                IMarkupContainer* pMC=NULL;
                                IMarkupPointer* pMkStart=NULL;
                                IMarkupPointer* pMkFinish=NULL;
                                pMS->CreateMarkupPointer(&pMkStart);
                                pMS->CreateMarkupPointer(&pMkFinish);
                                hr=pMS->ParseString((BSTR)source,0,&pMC,pMkStart,pMkFinish);
                                if (SUCCEEDED(hr)&&pMC){
                                        IHTMLDocument2* pDoc2=NULL;
                                        hr=pMC->QueryInterface(IID_IHTMLDocument2,(LPVOID*)&pDoc2);
                                        if (SUCCEEDED(hr)&&pDoc2){
                                                result=pDoc2; //...
                                                pDoc2->Release();
                                        }else{
                                                pMC->Release();
                                                pMS->Release();
                                                pDoc->Release();
                                                return FALSE;
                                        }
                                        pMC->Release();
                                }else{
                                        pMS->Release();
                                        pDoc->Release();
                                        return FALSE;
                                }
                                pMS->Release();
                        }else{
                                pDoc->Release();return FALSE;
                        }
                }else{
                        pDoc->Release();return FALSE;
                }
                pDoc->Release();
        }else{return FALSE;}
        CoUninitialize();
        return TRUE;
}

---

The Function is returnting TRUE, but I cannot access the pDoc(IHTMLDocument2 interface):

Code:

---

...
IHTMLDocument2* pDoc=NULL;
if (GetHtmlDoc(src,pDoc)&&pDoc){
        BSTR s;
        HRESULT hr=pDoc->get_title(&s); //I'm getting on this line.
        if (SUCCEEDED(hr)){
                AfxMessageBox(CString(s));
        }
}

---

I'm getting this error:

Quote:

---

Unhandled exception at 0x004f847e in WebBrowsing.exe: 0xC0000005: Access violation reading location 0xfeeeff32.

---

I think I defined my function wrong.

Please help me out.
Thank you.