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.
function to sort items
user data to pass to @match_func
destroy notify for @user_data
See Implementation
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.