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List:       pykde
Subject:    Re: [PyKDE] subclassing in pyqt
From:       Boudewijn Rempt <bsarempt () rempt ! xs4all ! nl>
Date:       2000-12-23 22:52:10
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On Sat, 23 Dec 2000, Phil Thompson wrote:

> Here is a thought...
> 
> As I've explained before, the C++ QListViewItem instance doesn't get
> deleted when the Python object is deleted because its ownership is
> transfered to the Qt code. What if I increased the reference count of
> the Python instance when ownership is transfered to Qt? Qt then has
> responsibility for deleting the reference count - and therefore the
> Python object would stick around even though you weren't holding an
> explicit reference in your Python code.
> 
> This goes against my previously stated philosophy of not messing with
> reference counts under the covers - but I can't think of any new
> problems it would create.
> 
> Anybody any thoughts on whether or not this would break anything?
> 

I don't think it would break anything - if QListViewItems would get
deleted when the Python reference got deleted, yes, but you've got
to use QListView.takeItem() anyway.

I haven't got any strong feelings: in most application, you'd want
to keep a mapping between a listviewitem and the object that it 
represents anyway, and then you've got your reference for free.

Boudewijn Rempt



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