title: Qt: QTabWidget not responding to clicks
body: <p>I am creating a Qt GUI with C++.</p>
  
  <p>My intention is to prompt the user when the tab bar is double clicked or single clicked. This works when I create the GUI using <strong>Qt Creator</strong>; however, when I <code>qmake</code> and run with <strong>XCode</strong>, the GUI does not respond to either single or double clicks. </p>
  
  <p>I am using the signals <code>tabBarDoubleClicked(int)</code> and <code>tabBarClicked(int)</code> from QTabWidget.</p>
  
  <p><em>Why do I experience different behavior when building with <strong>Qt Creator</strong> as opposed to <strong>XCode</strong>?</em></p>
  
  <p><em>How can I make <strong>XCode</strong> recognize single and double clicks to the tabBar?</em></p>
  
  <p>Edit: Also, I cannot find documentation for these functions. I find that strange due to <strong>Qt Creator</strong> listing this as applicable signals. <em>Why?</em></p>