title: QListWidget : Event on item click
body: <p>Basically, what I have is the following :</p>
  
  <p>A QListWidget, with some items in it like this :</p>
  
  <p><code>ListMail</code> is my QListWidget.
  In this QListWidget, I have elements like : "Mail 1", "Mail 2", ...</p>
  
  <p>And I don't have any idea, how can I make a signal on (for example) "Mail 1" bind to a slot(onClick) or something like that.</p>
  
  <p>I already tried things like :
  <code>connect(ui-&gt;listMail-&gt;selectedItems(0), SIGNAL(triggered()), this, SLOT(openMessage())</code>, but it doesn't work at all...</p>
  
  <p>Any help ?</p>
  
  <p>Thanks !</p>