Re: Gtk::Container and iterators

[Murray Cumming <murrayc murrayc com>]

On Tue, 2007-10-02 at 06:40 -0700, Maitre Bart wrote:
> 
> 
> Emil Nowak-2 wrote:
> > 
> > On 01-09-2007, 13:43:30 maitrebart wrote:
> > 
> >> 
> >> Is there a way to use some kind of iterators with the gtk containers
> >> (such as
> >> Gtk::Menu) in order to go through all the Gtk::MenuItem's in it?
> > You can use
> > Glib::ListHandle<Widget*> Gtk::Container::get_children();
> > 
> > 
> 
> True, but (...and I realize what was missing in my first message...) with
> this solution, I get a newly-allocated list of the container's non-internal
> children, or in other words, a copy of the original elements (i.e. the
> Gtk::MenuItem's).
> 
> In my specific case, I dynamically allocate all the Gtk::MenuItem's and have
> to delete them either after they are removed from the Gtk::Menu or when I
> destroy it. But to delete them, I need a way to get them back! For that, I
> need to get either the original Gtk::MenuItem objects' pointer or reference.

I still don't understand what is the difference between the list that
get_children() gives you and the list that you keep yourself. Both have
pointers to the same objects.

> At the present moment, I keep a list of pointers to my dynamically allocated
> elements in a std::stack. So when I'm in my destructor, I get the stack's
> top element, remove it from the menu,  delete it, and pop the stack. I
> repeat this until the stack is empty, and so the menu will. I wish I want to
> eliminate this duplication of data.
> 
-- 
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