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   menu_hook.3x    ( 3 )

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Имя (Name)

menu_hook - set hooks for automatic invocation by applications

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Синопсис (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);

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Описание (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).

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Возвращаемое значение (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(3)).

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Смотри также (See also)

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

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Примечание (Note)

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

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Портативность (Portability)

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

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