Re: AW: Attach invisible data to a TreeRow?

[Marco <mscholtn xs4all nl>]

On Sun, 18 Dec 2005 03:43:17 -0600, Paul Davis  
<pjdavis engineering uiowa edu> wrote:

> Murray Cumming wrote:
>
> > On Fri, 2005-12-16 at 22:38 +0100, Marco wrote:
> >
> > > http://www.gtkmm.org/docs/glibmm-2.4/docs/reference/html/classGlib_1_1RefPtr.html
> > > http://www.gtkmm.org/docs/gtkmm-2.4/docs/tutorial/html/ch18s02.html
> >
> > RefPtr is not meant to be a general-purpose smartpointer. I don't
> > recommend using it with Widgets.
> Unless I've completely misunderstood the entire memory managemeny scheme  
> used by Gtk, once you call Gtk::manage(), you release all control of  
> memory management to the library.  In other words, explicitly calling a  
> widget's destructor ( or implicitly via smart pointer reference counting  
> ) would be 'bad'.  I say 'bad' cause I'm not really sure what you'd run  
> into.  I imagine you'd start getting things like memory corruption  
> errors or those fun messages about freeing the same memory segment  
> multiple times.  Anyway, thats just how I had understood things.
>
> Paul

manage() makes the container responsible for deleting the widget so it  
would not be usefull in a case where you temporarily want to remove the  
widget from its container.
That is a case where you have to delete manually or use a smartpointer.

--
Marco