- DECLARE_SCHEME_CALLBACK (width_callback, (SCM, SCM));
- static bool has_interface (Grob*);
+ DECLARE_SCHEME_CALLBACK (brew_chord_slur, (SCM));
+ DECLARE_SCHEME_CALLBACK (width, (SCM));
+ DECLARE_SCHEME_CALLBACK (height, (SCM));
+ DECLARE_SCHEME_CALLBACK (pure_height, (SCM, SCM, SCM));
+ DECLARE_GROB_INTERFACE();