Re: [UFO-devel] BoUfo widget deleter

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

Am Mittwoch 30 November 2005 23:52 schrieb Andreas Beckermann:
> Hi
> the attached patch is pretty controversial, but I decided to give it a try
> anyway.
>
> In Boson we cannot use libufo directly, due to
> a) conflicting toolkits
> b) different APIs

Well, as may best please you.

> Therefore I have written a BoUfo library that provides the required widgets
> in wrapper classes. However this solution has one major problem:
> destruction. A statement such as
>   ufoWidget->removeAll();
> would delete all ufo widgets, however not the corresponding wrapper
> objects. Therefore I have patched our libufo copy to introduce a "widget
> deleter". This is simply an object that is deleted at the beginning of the
> ufo::UWidget d'tor. Any class deriving from this class can do cleanup tasks
> that may be necessary before the widget actually is deleted.
>
> 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.cpp?rev=1.9&view=markup


Regards,
Johannes