Re: Using a TreeStore with a ComboBox

["Jonathon Jongsma" <jonathon jongsma gmail com>]

On 6/23/07, Jef Driesen <jefdriesen hotmail com> wrote:
> Milosz Derezynski wrote:
> > Well, if it's really *just* that:
> >
> > On 6/23/07, Jef Driesen <jefdriesen hotmail com
> > <mailto:jefdriesen hotmail com>> wrote:
> >
> >     After refilter, the combobox contains no items anymore, just like when I
> >     populate the model before using set_visible_func. This is what I
> >     expected, because in my model all toplevel nodes have children. Of
> >     course this is not the solution I need.
> >
> >
> > and the grander scheme isn't something bigger, then you can just alter
> > the function to:
> >
> > bool
> > Example::on_model_visible (const Gtk:TreeModel::const_iterator& iter)
> > {
> >   return (iter != store->children().begin && iter->children().empty());
> > }
>
> This doesn't make any difference. This change only affects the very
> first node, which also has children in my example model, and thus
> doesn't change anything.
>
> I think a TreeModelFilter is not the solution for my problem, because it
>   can only hide nodes from the main model. What I need is the
> possibility to prevent certain nodes from being selected in the
> combobox. That is a change in the presentation of the model, not the
> model itself (e.g. something similar to the set_select_func from the
> treemodel).

So you want to display all nodes, but only allow the user to select
some of them?  I'm not sure how to accomplish this with a combobox.
Andrew's original suggestion would have worked with a TreeView, but I
don't know of anything similar for a combobox...

--
jonner