title: QToolBar : Displaying the menu when toolbutton is pressed - DownArrow Issue
body: <p>I currently have something like this in my code:</p>
  
  <pre><code>    QMenu *mabout = new QMenu("About");
  QToolButton* tb_about = new QToolButton();
  QAction *test= new QAction(mabout);
  test-&gt;setText("Test");
  mabout-&gt;addAction(test);
  tb_about-&gt;setText(mabout-&gt;title());
  tb_about-&gt;setMenu(mabout);
  tb_about-&gt;setPopupMode(QToolButton::MenuButtonPopup);
  ui.toolBar-&gt;addWidget(tb_about);
  </code></pre>
  
  <p>Now, it this gives me the following:</p>
  
  <p><img src="https://i.stack.imgur.com/RE0g3.png" alt="enter image description here"></p>
  
  <p>Now, I want to display the drop-down menu if I click on the About button or the down arrow. However nothing happens when I click on the about text. This is what it looks like:</p>
  
  <p><img src="https://i.stack.imgur.com/OWyak.png" alt="enter image description here"></p>
  
  <p>Nothing drops down. The only time something drops down is when I actually click on the down arrow. Is there any way to make the drop down drop when the down arrow is pressed?</p>