Gtk2::TreeSortable

$sortable->set_default_sort_func ($sort_func, $user_data=undef)

boolean = $sortable->has_default_sort_func

$sortable->sort_column_changed

(sort_column_id, order) = $sortable->get_sort_column_id
Returns sort_column_id, an integer and order, a Gtk2::SortType.

$sortable->set_sort_column_id ($sort_column_id, $order)

$sortable->set_sort_func ($sort_column_id, $sort_func, $user_data=undef)
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