python - How do I subclass QApplication properly? -

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i newbie pyqt4 (and qt altogether), , facing problem,

i have subclassed qapplication (to have global data , functions global application):

class app(qapplication):     def __init__(self):         qapplication.__init__(self)         self.foo = none      def bar(self,x):         do_something()

when try add slot main window like:

self.connect(bar, signal('triggered()'), qapp.bar)

i error: attributeerror: bar

what doing wrong? or should make stuff want global, global stuff instead off attributes , methods of qapplication subclass? (or else, if so, what?)

note: worked fine when "global" methods , attributes in qmainwindow -subclass...

try adding qtgui.qapp = self __init__ method (or try using qapplication.instance() instead of qapp).

i hope helps.


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