WinHttpClient by Cheng Shi can't get response

    // Set URL.
WinHttpClient client(L"http://www.codeproject.com/");

// Send HTTP request, a GET request by default.
client.SendHttpRequest();

// The response header.
wstring httpResponseHeader = client.GetResponseHeader();

// The response content.
wstring httpResponseContent = client.GetResponseContent();
printf((char*)httpResponseContent.c_str());