Creates a new GtkSorter that works by calling sortFunc to compare items. If sortFunc is null, all items are considered equal.
Sets (or unsets) the function used for sorting items. If sort_func is %NULL, all items are considered equal. If the sort func changes its sorting behavior, Gtk.Sorter.changed needs to be called. If a previous function was set, its user_destroy will be called now.
Notifies all users of the sorter that it has changed.
Compares two given items according to the sort order implemented by the sorter.
Gets the order that self conforms to.
Connect to Changed signal.
gtk.custom_sorter.CustomSorter is a gtk.sorter.Sorter implementation that sorts via a callback function.