Items on a menubar are managed by the following procedures.
EZ_Widget *EZ_MenuBarAddItemAndMenu (EZ_Widget *mbar, char *label, int ul, EZ_Widget *menu); void EZ_MenuBarSetItemMenu (EZ_Widget *mbar, char *label, EZ_Widget *menu); EZ_Widget *EZ_MenuBarFindItem ( EZ_Widget *mbar, char *name); EZ_Widget *EZ_MenuBarFindItemAndMenu ( EZ_Widget *mbar, char *name, EZ_Widget **ret); void EZ_MenuBarDeleteItem (EZ_Widget *mbar, char *label); void EZ_MenuBarDeleteItemAndMenu (EZ_Widget *mbar, char *label); void EZ_MenuBarInsertItemAndMenu (EZ_Widget *mbar, char *label, int ul, EZ_Widget *menu, EZ_Widget *EZ_MenuBarFindItemAtXY ( EZ_Widget *mbar, int x, int y); EZ_Widget *EZ_MenuBarFindItemAndMenuAtXY ( EZ_Widget *mbar, int x, int y, EZ_Widget **ret);
See the relevent man pages for descriptions.