NAME    [Toc]    [Back]

       menu_hook - set hooks for automatic invocation by applications

SYNOPSIS    [Toc]    [Back]

       #include <menu.h>
       int set_item_init(MENU *menu, void (*func)(MENU *));
       void (*)(MENU *) item_init(const MENU *menu);
       int set_item_term(MENU *menu, void (*func)(MENU *));
       void (*)(MENU *) item_term(const MENU *menu);
       int set_menu_init(MENU *menu, void (*func)(MENU *));
       void (*)(MENU *) menu_init(const MENU *menu);
       int set_menu_term(MENU *menu, void (*func)(MENU *));
       void (*)(MENU *) menu_term(const MENU *menu);

DESCRIPTION    [Toc]    [Back]

       These  functions make it possible to set hook functions to be called at
       various points in the automatic processing  of  input  event  codes  by
       menu_driver.

       The  function  set_item_init sets a hook to be called at menu-post time
       and each time the selected item changes (after the change).   item_init
       returns	the  current  item init hook, if any (NULL if there is no such
       hook).

       The function set_item_term sets a hook to be called at menu-unpost time
       and each time the selected item changes (before the change).  item_term
       returns the current item term hook, if any (NULL if there  is  no  such
       hook).

       The  function  set_menu_init sets a hook to be called at menu-post time
       and just after the top row on the  menu	changes  once  it  is  posted.
       menu_init  returns the current menu init hook, if any (NULL if there is
       no such hook).

       The function set_menu_term sets a hook to be called at menu-unpost time
       and  just  before  the  top  row on the menu changes once it is posted.
       menu_term returns the current menu term hook, if any (NULL if there  is
       no such hook).

RETURN VALUE    [Toc]    [Back]

       Routines  that  return  pointers  return NULL on error.	Other routines
       return one of the following:

       E_OK The routine succeeded.

       E_SYSTEM_ERROR    [Toc]    [Back]
	    System error occurred (see errno).

SEE ALSO    [Toc]    [Back]

       curses(3X), menu(3X).

NOTES    [Toc]    [Back]

       The  header  file  <menu.h>  automatically  includes  the  header  file
       <curses.h>.

PORTABILITY    [Toc]    [Back]

       These  routines	emulate the System V menu library.  They were not supported
 on Version 7 or BSD versions.

AUTHORS    [Toc]    [Back]

       Juergen Pfeifer.  Manual pages and adaptation for new curses by Eric S.
       Raymond.



								 menu_hook(3X)