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List:       pykde
Subject:    Re: [PyKDE] PyQt crash
From:       Phil Thompson <phil () riverbankcomputing ! co ! uk>
Date:       2006-12-03 15:13:31
Message-ID: 200612031513.33102.phil () riverbankcomputing ! co ! uk
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On Thursday 30 November 2006 11:48 pm, Giovanni Bajo wrote:
> Phil Thompson wrote:
> >>>>> from qt import QApplication
> >>>>> app = QApplication(["-v"]*10)
> >>>>> del app
> >>>>> app = QApplication([])
> >>
> >> I'm using Qt 3.3.6, PyQt 3.16, SIP 4.4.3, under Windows.
> >
> > It will be fixed in tonight's snapshot. A workaround is to pass a dummy
> > argument in the second ctor call.
>
> Thanks.
>
> > Note that PyQt4 handles QApplication differently and delays calling the
> > dtor until the interpreter exits. So, in the above case, you will have
> > two QApplication instances existing at the same time.
>
> So, how do I destroy a QApplication? It's needed for unittests to make sure
> each test starts clean (without inheriting spurious events/widgets/things
> from a previous test).

That's a good question. I think I chose to do it a different way with PyQt4 
because I couldn't use the same trick with QCoreApplication to make sure it 
got destroyed last.

With hindsight I think the PyQt3 approach is better to I'll change it.

Phil

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