[PyKDE] Problems with QWidgetFactory

[Fredrik Juhlin]

Hi,

We've been working on making sure that our application works with the latest 
versions of Qt, SIP and PyQt (3.3.2, 4.0 and 3.12, respectively.) Doing that, 
we've come across a problem with QWidgetFactory.

Something seems to happen to ownership of the widget returned by 
QWidgetFactory.create(). If one doesn't keep a reference to the widget it 
gets destroyed immediately, even if it is given a parent widget.
At first I thought that maybe it was intentional (even though it doesn't work 
that way in older versions) but if we do keep a reference to the widget 
throughout its life, the program seg faults when the reference is cleaned up.

In our application we use our own, subclassed widget factory to create special 
widgets, but I wrote a simple example using the built-in widget factory to 
demonstrate the behavior. The example is attached to this mail, along with a 
trivial .ui-file defining a widget with a QLineEdit and a QPushButton in a 
QVBoxLayout.

The example code displays the behavior when not keeping a reference, but by 
commenting the chunk of code marked with 1. and de-commenting the chunk 
marked 2. the widget gets displayed but the app segfaults when it's about to 
exit.

Any help on this matter would be much appreciated!

//Fredrik
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