[gtkmm] Re: Gtk::Combo

[Murray Cumming <murrayc usa net>]

On Wed, 2002-08-07 at 16:33, ERDI Gergo wrote:
> On 7 Aug 2002, Murray Cumming wrote:

> > I'd like to be able to set an invisible key for each combo item, and
> > just get the key of the selected item. Is that what you mean?
> 
> That would be good, but it's just one part of the puzzle.
> I have code like this in Guikachu:
> 
> void ResourceCombo::remove_resource (Resource *res)
> {
>     if (res->get_type () != type)
>         return;
>         
>     update_block = true;
> 
>     Gtk::List::ItemList listitems = combo.get_list ()->items ();
>     for (Gtk::List::ItemList::iterator i = listitems.begin ();
>          i != listitems.end (); i++)
>     {
>         if ((*i)->get_user_data () == res)
>             i = listitems.erase (i);
>     }
> 
>     update_block = false;
> }
> 
> So I access list items individually and add/remove them.
> The GTKmm 1.3 version now looks like this:
> 
>     // This sucks, but we have to rebuild the whole list because
>     // there's no other API to change a combo's list
> 
>     std::set<Resource*> resource_list = manager->get_resources ();
>     std::list<std::string> resource_id_list;
>     resource_id_list.push_back ("");
>     for (std::set<Resource*>::const_iterator i = resource_list.begin ();
>          i != resource_list.end (); ++i)
>         if ((*i)->get_type () == type)
>             resource_id_list.push_back ((*i)->id);
>     
>     combo.set_popdown_strings (resource_id_list);

You could add methods that use GList* internally. I'd accept that API
change.

But you would need to turn off the DEPRECATED #defines (maybe just an
#undef) so that it builds, and I'd prefer it if you did that for just
one .cc file rather than the whole library.
 
-- 
Murray Cumming
murrayc usa net
www.murrayc.com