title: How can I disable sounds played by Qt QMessageBox?
body: <p>I am working on a Windows application using Qt 4.8 that uses </p>
  
  <pre><code>QMessageBox::information
  QMessageBox::warning
  ...
  </code></pre>
  
  <p>When any of thes functions is called, windows plays by default a sound. My customers are annoyed of this and want to disable this permanently without changing windows settings.</p>
  
  <p>How can I get rid if this sound?</p>
  
  <p>I found that it is called from</p>
  
  <pre><code>void QAccessible::updateAccessibility()
  </code></pre>
  
  <p>But I do not so far see a way to disable it.</p>