title: QNetworkAccessManager proper usage
body: <p>I want to POST some info to a php and GET the result from that php.
  My POST should look like: www.sample.com/test.php?un=user&amp;pass=123345
  I am trying all variants with no success:</p>
  
  <pre><code>m_NetworkAccessMNGR = new QNetworkAccessManager(this);
  connect(m_NetworkAccessMNGR, SIGNAL(finished(QNetworkReply*)),
          this,SLOT(slotFinishRequest(QNetworkReply*)));
  QNetworkRequest networkRequest;
  networkRequest.setUrl(QUrl("http://www.sample.com/test.php?un=user&amp;pass=123345"));
  
  QNetworkReply *reply = m_NetworkAccessMNGR-&gt;get(networkRequest);
  
  connect(reply, SIGNAL(readyRead()),
          this, SLOT(slotReadyRead()));
  connect(reply, SIGNAL(finished()),
          this, SLOT(slotOnRequestCompleted()));
  connect(reply, SIGNAL(error(QNetworkReply::NetworkError)),
          this, SLOT(slotOnRequestError(QNetworkReply::NetworkError)));
  connect(reply, SIGNAL(sslErrors(QList&lt;QSslError&gt;)),
           this, SLOT(slotSslErrors(QList&lt;QSslError&gt;)));
  </code></pre>
  
  <p>The code doesn't execute any of these slots.
  <br>Does anybody has any ideea on what is the problem?<br>Thank you</p>