menu_hook
Section: Library calls (3X)
Updated: 202-1-28
Index
Return to Main Contents
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 men-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 men-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 men-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 men-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(3)).
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.
SEE ALSO
curses(3X),
menu(3X)
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- PORTABILITY
-
- AUTHORS
-
- SEE ALSO
-
|
|
- Running on 
-
:
