Re: [UFO-devel] BoUfo widget deleter

[Johannes S. <sch...@us...>]

Am Freitag 02 Dezember 2005 11:51 schrieb Andreas Beckermann:
[...]
> > > A normal ufo::UObject that is added to the widget using trackPointer()
> > > is _not_ sufficient, as this is deleted by the ufo::UObject d'tor only
> > > and at this point the ufo::UWidget has already been destroyed.
> >
> > Just a quick question:
> > Where do you actually use the UWidget pointer in your BoUfoWidget d'tor?
> > If haven't found any direct access to the UWidget object here:
> > http://cvs.sourceforge.net/viewcvs.py/boson/code/boson/boufo/boufowidget.
> >cp p?rev=1.9&view=markup
>
> The deleter does not do so at all (directly).
> It deletes the corresponding BoUfoWidget, which in turn uses the
> ufo::UWidget pointer or related pointers.
>
> This for example:
> http://cvs.sourceforge.net/viewcvs.py/boson/code/boson/boufo/bouforadiobutt
>on.cpp?view=markup the d'tor uses the mButtonGroup pointer. That button
> group is deleted by the ufo::UButton that is encapsulated by the
> BoUfoWidget and therefore is deleted by the ufo::UWidget d'tor.

I do not want to nitpick, but the button group is not deleted by UButton.
Anyway it is probably saver to increase the reference count of the button 
group at creation.

> Other (much more difficult to solve) examples can be found in the actual
> boson code. For example in the gameview/bosongameview.cpp

Sorry, still I haven't found an example, where a UWidget pointer is used in 
the BoUfoWidget d'tor.


Regards,
Johannes