title: How to translate the buttons in qmessagebox?
body: <p>I have a <code>QMessageBox</code> like this:</p>
  
  <pre><code>QMessageBox::question(this, tr("Sure want to quit?"), 
      tr("Sure to quit?"), QMessageBox::Yes | QMessageBox::No);
  </code></pre>
  
  <p>How could I translate the Yes/No word? since there is no place to place a <code>tr()</code>?</p>