title: Multiprocessing Qt app: How can I limit it to a single icon in the MacOS/X Dock?
body: <p>I've got a Qt application that (for reasons that are outside the scope of this question) launches each of its windows as a separate process.</p>
  
  <p>This works fine, but under MacOS/X, each window/process shows up as a separate entry in the Dock.  Thus when the user has a dozen windows open, there are a dozen identical icons in the Docks, which isn't very helpful (since it's hard to tell which is which, and the icons start to get small).</p>
  
  <p>Is there some way to tell the Dock to group all of these processes together under a single Dock icon?  (a Mac-specific API would be fine)</p>