パスを使用して URL を指定する方法は次のとおりhttp://stackoverflow.com/questions
です。
以下は機能しますが、上記の例で指定された URL では機能しません。
LPCWSTR useragent = L"Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.12) Gecko/20101026 Firefox/3.6.12 GTB7.1 ( .NET CLR 3.5.30729)";
DWORD dwSize = 0;
DWORD dwDownloaded = 0;
LPSTR pszOutBuffer;
BOOL bResults = FALSE;
HINTERNET hSession = NULL, hConnect = NULL, hRequest = NULL;
// Use WinHttpOpen to obtain a session handle.
hSession = WinHttpOpen(useragent,
WINHTTP_ACCESS_TYPE_DEFAULT_PROXY,
WINHTTP_NO_PROXY_NAME,
WINHTTP_NO_PROXY_BYPASS, 0 );
// Specify an HTTP server.
if( hSession )
hConnect = WinHttpConnect( hSession, L"www.stackoverflow.com",
INTERNET_DEFAULT_HTTPS_PORT, 0 );
// Create an HTTP request handle.
if( hConnect )
hRequest = WinHttpOpenRequest( hConnect, L"GET", NULL, NULL,WINHTTP_NO_REFERER,
WINHTTP_DEFAULT_ACCEPT_TYPES,
WINHTTP_FLAG_SECURE );
// Send a request.
if( hRequest ) bResults = WinHttpSendRequest(hRequest, WINHTTP_NO_ADDITIONAL_HEADERS, 0, WINHTTP_NO_REQUEST_DATA, 0, 0, 0 );
// End the request.
if( bResults )
bResults = WinHttpReceiveResponse( hRequest, NULL );