Creates a new filter using the given @match_func to filter items.
If @match_func is %NULL, the filter matches all items.
If the filter func changes its filtering behavior, gtk_filter_changed() needs to be called.
function to filter items
user data to pass to @match_func
destroy notify for @user_data
a new GtkCustomFilter
ConstructionException GTK+ fails to create the object.
See Implementation
Creates a new filter using the given @match_func to filter items.
If @match_func is %NULL, the filter matches all items.
If the filter func changes its filtering behavior, gtk_filter_changed() needs to be called.