// The item with the sublist must be in column 0. Only this is searched by
// BC_ListBox.
+ int sublist_active() { return sublist && expand ? 1 : 0; }
// Mind you, sublists are ignored in icon mode.
ArrayList<BC_ListBoxItem*>* new_sublist(int columns);
ArrayList<BC_ListBoxItem*>* get_sublist() { return sublist; }