[Twisted-Python] twisted pyQT4 tutorial?

[twisted at x11.cjb.net]

I am intrested in doing some stuff with pyQT4 and twisted, and have been 
successful in getting some things to work separately, but am not exactly sure 
how to get the reactor going in the QT4's event loop.

This is the reactor I am trying to use.
http://twistedmatrix.com/trac/attachment/ticket/1770/qt4reactor.py

Is there any kind of tutorial for this, or example code from a simple runnable 
application?

-Brian