title: Menu delay for QToolBar
body: <p>I have a menu on a QToolBar by making a QAction and adding a QMenu to it. How can I remove the delay before the menu appears when you click on the icon ?</p>
  
  <pre><code>QToolBar *myToolBar = new QToolBar(this);
  QAction *myAction = new QAction(helloIcon, tr("Hello"), this);
  myToolBar-&gt;addAction(myAction);
  
  helloMenu = new QMenu(this);
  QAction *actionWorld = helloMenu-&gt;addAction(tr("World"));
  QAction *actionUniverse = helloMenu-&gt;addAction(tr("Universe"));
  myAction-&gt;setMenu(helloMenu);
  </code></pre>