[PyQt] Re: SIP bug with object lifetime

[Giovanni Bajo]

On 5/14/2007 7:04 PM, Phil Thompson wrote:

>>>>> If the new /Transfer/ function annotation were to be applied to
>>>>> viewport() then a gc association would be established between viewport
>>>>> and ql with the ql Python object having a reference to the viewport
>>>>> Python object. This would prevent viewport (and also o) from being
>>>>> garbage collected until ql was.
>>>> What about queryList()/findChildren()? In my original code, the
>>>> C++-allocated instance was accessed through a queryList() call. It's
>>>> basically the same (getting a reference to a C++ instance never seen
>>>> before by Python), but I guess the annotation won't be enough...
>> You didn't answer this: is the annotation going to work also for the
>> queryList() / findChildren() case?
> 
> It would work if it was applied - but I haven't applied it to PyQt4. I've 
> applied it to those methods that are known to return an internally generated 
> instance.

findChildren() might or might not return an internally generated 
instance, depending... on the instance. I guess that needs to be handled 
in hand-generated code, right?
-- 
Giovanni Bajo