[PyKDE] Memory leak with QDialog

Giovanni Bajo rasky at develer.com
Tue Feb 28 08:47:24 GMT 2006

Phil Thompson <phil at riverbankcomputing.co.uk> wrote:

>> Except that this is not totally equivalent:
>> - In the C++ version, dlg is a local variable: so it gets deleted
>> when we get out of function().
>> - In the Python version, dlg is owned by self: when we get out of
>> function(), it is still referenced and won't get garbage collected. A
>> workaround to that problem is to reparent the dialog, like this:
>>   def function(self):
>>     dlg=MyDialog(self)
>>     dlg.exec_loop()
>>     dlg.reparent(None, QPoint(0,0))
>> The attached Python example demonstrates this.
>> If there is a better solution, let me know.
> You don't say what versions you are using. I think this was fixed in
> v3.15 - at least I don't see any leak in current snapshots.

Yes, I can confirm it was fixed. Though QPopupMenu is exactly in the same
situation and it was not fixed: I reported this before.

Giovanni Bajo

More information about the PyQt mailing list