title: QWidget with doubleclick
body: <p>I want to be able to double click a QPushbutton instead of a single click.</p>
  
  <p>What I tried: </p>
  
  <pre><code>connect(pb, SIGNAL(doubleClicked()), this, SLOT(comBtnPressed()));
  </code></pre>
  
  <p>Error says "QObject::connect: No such signal QPushButton::doubleClicked()"</p>
  
  <p>I chose QPushButton initially, but for my purpose, you can suggest change to other object if it can make a doubleclick event. Not necessarily be a push button.</p>
  
  <p>Thank you Masters of Qt and C++.</p>