C / C++ / MFC

// Internet session object
CInternetSession mysession;
CStdioFile* remotefile;
 
CString strError,
	strBuffer;
 
strError = _T("SUCCESS");
 
TRY
{
	char httpbuff[4096];
	int numbytes;
 
	remotefile = mysession.OpenURL(_T("http://www.google.com/index.html"), 1, INTERNET_FLAG_TRANSFER_BINARY | INTERNET_FLAG_RELOAD);
 	
	// Read the contents of the remote file.
	while (numbytes = remotefile->Read(httpbuff, sizeof(httpbuff)-1))
	{
		// Null terminate the buffer.
		httpbuff[NULL];
 
		// Keep adding the contents to our buffer.
		strBuffer += (CString)httpbuff;
	}
 	 
	// Clean up.
	mysession.Close();
	remotefile->Close();
	delete remotefile;
}
 	 								
// Catch any errors and format the error message.
CATCH_ALL(error)
{
	TCHAR szCause[4096];
	error->GetErrorMessage(szCause,4096,NULL);
	strError.Format("%s",szCause);
}
END_CATCH_ALL;
 	 								
if(!strError.CompareNoCase(_T("SUCCESS")))
{
	// Success, write the buffer out to a file...
	....
}
else
{
	// Error
	AfxMessageBox(strError);
}

CMydialog *pDlg;
pDlg = new CMydialog;
pDlg->Create(CMydialog::IDD);
pDlg->ShowWindow(SW_SHOW);