*** GMX Spamverdacht *** Re: [PyQt] Bug in QAbstractItemModel::createIndex()?

[Phil Thompson]

On Thursday 05 April 2007 1:12 pm, Andreas Pakulat wrote:
> On 05.04.07 12:14:01, Phil Thompson wrote:
> > On Thursday 05 April 2007 11:44 am, Andreas Pakulat wrote:
> > > On 05.04.07 11:28:23, Phil Thompson wrote:
> > > > On Thursday 05 April 2007 1:01 am, Andreas Pakulat wrote:
> > > > > Hi,
> > > > >
> > > > > the latest eric4 snapshots seem to not work wrt model/view stuff,
> > > > > first I thought its because they create model indexes using
> > > > >
> > > > > createIndex(row,col,item)
> > > > >
> > > > > where item is an instance of a class, however when getting an index
> > > > > the model always asks it for its internalId() and not the
> > > > > internalPointer(). So I changed it to
> > > > >
> > > > > createIndex(row,col,id(item))
> > > > >
> > > > > which should work, but the created indices don't have a proper
> > > > > internalId, its always some negative number.
> > > > >
> > > > > The attached example is the simepltreemodel modified to use
> > > > > internalId instead of internalPointer and shows the same problem.
> > > >
> > > > Works fine for me - once the obvious typo is fixed.
> > >
> > > Would you mind sharing your knowledge with me? I can't find a typo in
> > > the code I changed.
> >
> > The spelling of itemdict on line 120 - the line that generates all those
> > exception messages. Maybe you didn't attach the version you intended to.
>
> Uhm, right, overlooked that one.
> But the problem still persists, what I see here is:
> KeyError: -1212033192L
> Traceback (most recent call last):
>   File "simpletreemodel.py", line 88, in data
>     item = self.itemdict[index.internalId()]
> KeyError: -1212033192L
> Traceback (most recent call last):
>   File "simpletreemodel.py", line 88, in data
>     item = self.itemdict[index.internalId()]
> KeyError: -1212033096L
>
> And that is with the latest snapshot. I have absolutely no idea how that
> can happen and so far it seems I'm the only one seeing this.

Jeremy Sanders posted about a similar problem last August. Attached is his 
test script. He was getting the same values on a 32 bit system but different 
values on a 64 bit system.

You getting different values would explain the behaviour you are seeing. 
However I get the same values on both 32 and 64 bit systems - but none of my 
values go negative.

Certainly internalPointer() should be used in preference to internalId().

Phil
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