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menu_hook(3X)							 menu_hook(3X)

NAME
       menu_hook - set hooks for automatic invocation by applications

SYNOPSIS
       #include	<menu.h>

       int set_item_init(MENU *menu, Menu_Hook func);
       Menu_Hook item_init(const MENU *menu);

       int set_item_term(MENU *menu, Menu_Hook func);
       Menu_Hook item_term(const MENU *menu);

       int set_menu_init(MENU *menu, Menu_Hook func);
       Menu_Hook menu_init(const MENU *menu);

       int set_menu_term(MENU *menu, Menu_Hook func);
       Menu_Hook menu_term(const MENU *menu);

DESCRIPTION
       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
       Routines	that return pointers return NULL on error.  Other routines re-
       turn one	of the following:

       E_OK The	routine	succeeded.

       E_SYSTEM_ERROR
	    System error occurred (see errno(3)).

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

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

PORTABILITY
       These  routines	emulate	the System V menu library.  They were not sup-
       ported on Version 7 or BSD versions.

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

								 menu_hook(3X)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | SEE ALSO | NOTES | PORTABILITY | AUTHORS

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