title: Change QPushButton Icon on hover and pressed
body: <p>I'm trying to change the Icon of a QpushButton on hover and pressed, I'm using QtDesigner with stylesheets.
  I tried this </p>
  
  <pre><code>QpushButton{
         qproperty-icon:url(:/images/start.png);
  }
  
  QPushButton:hover
  {
         qproperty-icon:url(:/images/start_hov.png);
  }
  </code></pre>
  
  <p>But it doesn't work. </p>
  
  <p><a href="https://i.stack.imgur.com/qBfTq.png" rel="noreferrer">I tried setting it from QtDesigner Menu</a>
  but it didn't work as well.</p>