menu_hook(3) [netbsd man page]

MENU_HOOK(3)						   BSD Library Functions Manual 					      MENU_HOOK(3)

NAME

     item_init, item_term, menu_init, menu_term, set_item_init, set_item_term, set_menu_init, set_menu_term -- get or set handler functions for
     menu post/unpost or item change

LIBRARY

     Curses Menu Library (libmenu, -lmenu)

SYNOPSIS

     #include <menu.h>

     void (*hook)()
     item_init(MENU *menu);

     void (*hook)()
     item_term(MENU *menu);

     void (*hook)()
     menu_init(MENU *menu);

     void (*hook)()
     menu_term(MENU *menu);

     int
     set_item_init(MENU *menu, void (*hook)()));

     int
     set_item_term(MENU *menu, void (*hook)()));

     int
     set_menu_init(MENU *menu, void (*hook)()));

     int
     set_menu_term(MENU *menu, void (*hook)()));

DESCRIPTION

     The item_init() function returns a pointer to the function that will be called whenever the menu is posted and also just after the current
     item changes.  This is set by the set_item_init() call.  The item_term() function returns a pointer to the function that will be called
     before the menu is unposted and just before the current item changes, this pointer is set by the set_item_term() call.  The menu_init() func-
     tions returns a pointer to the function that will be called just before the menu is posted to the screen.	This pointer is set by the
     set_menu_init() function call.  The menu_term() function returns a pointer to the function that will be called just after the menu has been
     unposted, this pointer is set by the set_menu_term() function.

SEE ALSO

     curses(3), menus(3)

NOTES

     The header <menu.h> automatically includes both <curses.h> and <eti.h>.

BSD
								September 10, 1999							       BSD

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, 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

       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 return one of the following:

       E_OK The routine succeeded.

       E_SYSTEM_ERROR
	    System error occurred (see errno).

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 supported on Version 7 or BSD versions.

AUTHORS

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

																     menu_hook(3X)