Re: a TreeModel that's sortable and filterable?

[Jamf <jamf gm gmail com>]

Armin Burgmeier escribió:
> TreeModelFilter and TreeModelSort have child models. So, if you have
> some TreeModel A, and you want it sorted, then create a TreeModelSort
> with A as child. If you want it both sorted and filtered, then create a
> TreeModelFilter with a TreeModelSort as child (or vice versa).
>
> Note that Gtk::ListStore and Gtk::TreeStore already support sorting
> (since they implement Gtk::TreeSortable), so you don't even need
> Gtk::TreeModelSort for them (unless you want to do things like showing a
> sorted and an unsorted model in different views).
>   
I have similar situation in my project.
If I put ListStore as the model in the treeview, then the sorting 
properties work correctly, but when a TreeModelFilter (with the 
liststore as child) is used as the model in the treeview, the 
ListStore's sorting properties don't work and I get:
"Gtk-CRITICAL **: gtk_tree_sortable_get_sort_column_id: assertion 
`GTK_IS_TREE_SORTABLE (sortable)' failed
Gtk-CRITICAL **: gtk_tree_sortable_has_default_sort_func: assertion 
`GTK_IS_TREE_SORTABLE (sortable)' failed"
Then the only way to get sorting properties is creating a new 
TreeModelSort with the TreeModelFilter as child.

Regards:
Juan Ángel Moreno Fernández