#ifndef NOTE_COLUMN_HH
#define NOTE_COLUMN_HH
-#include "item.hh"
+#include "grob-interface.hh"
+#include "lily-proto.hh"
+
/** a struct for treating a group of noteheads (noteheads, stem
(chord) and scripts) as a single entity.
static void set_dotcol (Grob *me, Grob *);
static void add_head (Grob *me, Grob *);
static bool has_rests (Grob *me);
- static bool has_interface (Grob *);
+ DECLARE_GROB_INTERFACE();
static Item *get_stem (Grob *);
};