menu_hook()

set hooks for automatic invocation by applications 

Curses Function

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 VALUES

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.

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.

AVAILABILITY

PTC MKS Toolkit for Professional Developers
PTC MKS Toolkit for Enterprise Developers
PTC MKS Toolkit for Enterprise Developers 64-Bit Edition

SEE ALSO

Functions:
curses(), menu()

PTC MKS Toolkit 10.4 Documentation Build 39.