alias Gtk::TreeListModelCreateModelFunc

Overview

Prototype of the function called to create new child models when gtk_tree_list_row_set_expanded() is called.

This function can return %NULL to indicate that @item is guaranteed to be a leaf node and will never have children. If it does not have children but may get children later, it should return an empty model that is filled once children arrive.

Alias Definition

GObject::Object -> Gio::ListModel

Defined in:

lib/gi-crystal/src/auto/gtk-4.0/gtk.cr