MFC: Sign in and get web page source

[msn92]

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.

[msn92]

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:

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):

...
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:

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.