title: QT GUI gets hung whens calling a perl script
body: <p>I have developed a QT GUI, which has a "Start Tests" Push button. When this push button is clicked I call a perl script [using 'system' command], which  initiates tests. My question is that when I call the perl script, my GUI tends to hang. These are the questions I have:
  a) How do I call a perl script from the QT GUI but the idea is that it should not hang my GUI. I see the GUI getting hung up until the perl script exits.
  b) Is there any provision to call the perl script and make the GUI exit instead of waiting for the perl script to exit?</p>
  
  <p>Thanks!</p>