PyQT-application crash when shutting down
Albert Hofkamp
hat at se-46.wpa.wtb.tue.nl
Mon Jan 27 11:56:41 EST 2003
On Sun, 26 Jan 2003 14:05:26 -0700, Andrew Dalke <adalke at mindspring.com> wrote:
>> The application seems to be working fine, but when I press the 'Quit'
>> button (which sends a 'clicked' signal to the 'quit' slot of the main
>> application), I get a "segmentation fault".
>> Below is a stripped-down application that demonstrates the problem (at
>> least at my machine):
>
>> if __name__ == '__main__':
>> app=QApplication(sys.argv)
>> aw=ApplicationWindow()
>> app.setMainWidget(aw)
>> app.connect(aw._quit,SIGNAL("clicked()"),app,SLOT("quit()"))
>> aw.show()
>> app.exec_loop()
>>
>> I don't understand why this happens. If the application is closed with the
>> 'close window' button, it exits without problems.
>>
>> Any ideas?
>
> I get similar behaviour. I think it's because the deallocator for
> app and aw are in indefinite order, but Qt requires aw to be deallocated
> first. I end up writing my scripts like this
Hmm, so 'del aw' as the last statement would also work then ?
> def main(app):
> aw=ApplicationWindow()
> app.setMainWidget(aw)
> app.connect(aw._quit,SIGNAL("clicked()"),app,SLOT("quit()"))
> aw.show()
> app.exec_loop()
>
> if __name__ == "__main__":
> app = QApplication(sys.argv)
> main(app)
Thank you very much!!
I was hoping that a simple fix would be available for my current version.
If this works, we will have one happy system administrator (since he has 40
machines less to upgrade to a new PyQt :-) ).
Albert
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