set_filter_func

By setting a filter function on the this one can decide dynamically which of the rows to show.

For instance, to implement a search function on a list that filters the original list to only show the matching rows.

The filter_func will be called for each row after the call, and it will continue to be called each time a row changes (via [ method@Gtk.ListBoxRow.changed]) or when [method@Gtk.ListBox.invalidate_filter] is called.

Note that using a filter function is incompatible with using a model (see [method@Gtk.ListBox.bind_model]).

Parameters:

this	a `GtkListBox`
filter_func	callback that lets you filter which rows to show
destroy	destroy notifier for user_data
user_data	user data passed to filter_func