menu_hook(3X)                                                 menu_hook(3X)


   NAME
         menu_hook: set_item_init, item_init, set_item_term, item_term,
         set_menu_init, menu_init, set_menu_term, menu_term - assign
         application-specific routines for automatic invocation by menus

   SYNOPSIS
         #include <menu.h>

         int set_item_init(MENU *menu, void (*func)(MENU *));
         void (*)(MENU *) item_init(MENU *menu);
         int set_item_term(MENU *menu, void (*func)(MENU *));
         void (*)(MENU *) item_term(MENU *menu);
         int set_menu_init(MENU *menu, void (*func)(MENU *));
         void (*)(MENU *) menu_init(MENU *menu);
         int set_menu_term(MENU *menu, void (*func)(MENU *));
         void (*)(MENU *) menu_term(MENU *menu);

   DESCRIPTION
         set_item_init assigns the application-defined function to be called
         when the menu is posted and just after the current item changes.
         item_init returns a pointer to the item initialization routine, if
         any, called when the menu is posted and just after the current item
         changes.

         set_item_term assigns an application-defined function to be called
         when the menu is unposted and just before the current item changes.
         item_term returns a pointer to the termination function, if any,
         called when the menu is unposted and just before the current item
         changes.

         set_menu_init assigns an application-defined function to be called
         when the menu is posted and just after the top row changes on a
         posted menu.  menu_init returns a pointer to the menu initialization
         routine, if any, called when the menu is posted and just after the
         top row changes on a posted menu.

         set_menu_term assigns an application-defined function to be called
         when the menu is unposted and just before the top row changes on a
         posted menu.  menu_term returns a pointer to the menu termination
         routine, if any, called when the menu is unposted and just before the
         top row changes on a posted menu.

   RETURN VALUE
         Routines that return pointers always return NULL on error.  Routines
         that return an integer return one of the following:








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   menu_hook(3X)                                                 menu_hook(3X)


         E_OK           - The routine returned successfully.
         E_SYSTEM_ERROR - System error.

   NOTES
         The header file <menu.h> automatically includes the header files
         <eti.h> and <curses.h>.

   SEE ALSO
         curses(3X), menus(3X), menu_control(3X), menu_hook(3X).












































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