menu_hook - Online Linux Manual PageSection : 3X
Updated :

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NAMEmenu_hook − set hooks for automatic invocation by applications

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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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DESCRIPTIONThese 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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RETURN VALUERoutines 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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SEE ALSOcurses(3X), menu(3X).

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

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

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AUTHORSJuergen Pfeifer. Manual pages and adaptation for new curses by Eric S. Raymond. 0

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Johanes Gumabo

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