[PyQt] Qt or PyQt problem?

[Darren Dale]

On Wed, Jun 3, 2009 at 10:37 AM, Darren Dale <dsdale24 at gmail.com> wrote:

>
>
> On Wed, Jun 3, 2009 at 10:23 AM, "V. Armando Solé" <sole at esrf.fr> wrote:
>
>> Darren Dale wrote:
>>
>>> Hi Armando,
>>>
>>> Relatedly, I think there is a small problem with the PyQt4 documentation
>>> for the overloaded QAbstractItemModel.createIndex method. It looks like Qt's
>>> documentation for passing a pointer is being presented in PyQt4's method for
>>> passing an identifier, and PyQt's pointer method documentation is empty.
>>>
>>> When I first read PyQt's documentation for this method, there was nothing
>>> to indicate that the id passed to createIndex should end up as the index's
>>> internalId(), so I wrote a workaround. But now that I read Qt-4.5's
>>> documenation for this method, it seems clear that these identifiers should
>>> be equal.
>>>
>>> By the way, is your windows machine 32 or 64 bit?
>>>
>> 32-bit. Anyways there is something weird. I have tried masking id and
>> internalId with the operation & 0xFFFFFFFF in order to generate the same
>> values. Nevertheless, the self._idMap dictionnary keeps growing. I always
>> end up with an infinite tree in linux-32 and not in linux-64.
>>
>> By the way, does the posted code behaves properly on your system?
>> Sometimes fails even at 64 bit.
>
>
> When I run this version of your script, the two identifiers are never the
> same:
>
> import PyQt4.Qt as qt
>
> import random
>
> class Model(qt.QAbstractItemModel):
>   def index(self, row, column, parent):
>       a=[random.random()]
>       index =  self.createIndex(row, column, id(a))
>       print "Next two values should be the same"
>       print "indexInternalId = ", index.internalId()
>       print "id(a) = ", id(a)
>       return index
>
> if __name__ == "__main__":
>   app = qt.QApplication([])
>   w = Model()
>   w.index(0,0,None)
>

I should have noted, I'm testing on 64-bit linux.
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