title: How to ping a remote machine with Qt
body: <p>I am developping a cross-platform (Windows-Mac-Unix) application using Qt.
  This is my first time using this framework so I am discovering it.</p>
  
  <p>I need to ping a distant machine based on its IP address and I can't find a way to perform this task with the Qt framework, though it seems pretty basic...
  I've found examples on the web but they use OS-dependant methods, which is precisely what I want to avoid since I have to run on different environments. Isn't there a simple ping command in the Qt framework? And how to use it?</p>
  
  <p>Any help would be much appreciated, thank you in advance.</p>