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menu_hook(3X) Library calls 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)). 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. SEE ALSO curses(3X), menu(3X) ncurses 6.5 2024-03-16 menu_hook(3X)