title: Qt wheelEvent over all
body: <p>I have app window with many layouts and widget. I have also scrollarea with switch-off scrollbars. I am able to create slots for scrollareaup and scrollareadown. But when I create wheelEvent for all App it's working only for items int app NOT in scrollarea. When I just try this:</p>
  
  <pre><code>void TContic_win::wheelEvent(QWheelEvent *event) {
    cout &lt;&lt; "-" &lt;&lt; endl;
  } 
  </code></pre>
  
  <p>I don't know how I can fix it. My idea is something like:</p>
  
  <pre><code>bool TContic_win::eventFilter(QObject *obj, QEvent *e) {
  
    if (isChildOfScrollWidget(obj) { if (e == wheel) scroll Up or Down }
  
  }
  </code></pre>