[PyQt] multiple inheritance suggestion
lcampagn at email.unc.edu
Mon Apr 9 03:40:04 BST 2012
I'm trying to achieve some sort of multiple inheritance with custom classes
where each may define its own signals. I understand there are limitations
with SIP in this area, but It is not really necessary that QObject be
inherited more than once. As an example, consider the standard diamond
If A is a subclass of QObject, then presumably classes B, C, and D could
all define their own signals (creating an instance of class D should only
result in a single C++ QObject instance, so in theory this should work
fine). In practice, this causes a segmentation fault when emitting signals
that were defined in class C. I'm not sure if this is a solvable problem at
all, but suggestions are welcome. I could potentially sidestep the issue by
breaking the inheritance between A and C, but then I can no longer define
signals from class C (Or rather, I can define signals, but attempting to
emit such a signal also leads to segmentation fault).
Any ideas? Is there perhaps a way (using new-style signals) to send a
signal that is not defined as a class attribute?
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