title: PyQt4, Generating multiple Instances of the same widget?
body: <p>I am creating a PyQt4 gui that allows the user in a qmainwindow to input some initial parameters and then click a start button to begin a program.  When they click the start button, a new window that displays the parameters appears, and the program begins.  I would like the user to be able to initiate multiple instances of the program.  However, when the parameters are changed in the qmainwindow and the start button is clicked a second time, the first program window disappears.</p>
  
  <p>Is there a way to have the start button call a second window that runs concurrently with the first window? I imagine this would be something like threading, but from what I have read, PyQt4 doesn't seem to have a method for threading within an application. </p>
  
  <p>Any help would be much appreciated.</p>