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<PRE>
<!-- Manpage converted by man2html 3.0.1 -->
</PRE>
<H2>NAME</H2><PRE>
<B>menu_hook</B> - set hooks for automatic invocation by applica-
tions
</PRE>
<H2>SYNOPSIS</H2><PRE>
<B>#include</B> <B><menu.h></B>
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);
</PRE>
<H2>DESCRIPTION</H2><PRE>
These functions make it possible to set hook functions to
be called at various points in the automatic processing of
input event codes by <B>menu_driver</B>.
The function <B>set_item_init</B> sets a hook to be called at
menu-post time and each time the selected item changes
(after the change). <B>item_init</B> returns the current item
init hook, if any (<B>NULL</B> if there is no such hook).
The function <B>set_item_term</B> sets a hook to be called at
menu-unpost time and each time the selected item changes
(before the change). <B>item_term</B> returns the current item
term hook, if any (<B>NULL</B> if there is no such hook).
The function <B>set_menu_init</B> sets a hook to be called at
menu-post time and just after the top row on the menu
changes once it is posted. <B>menu_init</B> returns the current
menu init hook, if any (<B>NULL</B> if there is no such hook).
The function <B>set_menu_term</B> sets a hook to be called at
menu-unpost time and just before the top row on the menu
changes once it is posted. <B>menu_term</B> returns the current
menu term hook, if any (<B>NULL</B> if there is no such hook).
</PRE>
<H2>RETURN VALUE</H2><PRE>
Routines that return pointers return <B>NULL</B> on error. Other
routines return one of the following:
<B>E_OK</B> The routine succeeded.
<B>E_SYSTEM_ERROR</B>
System error occurred (see <B>errno</B>).
</PRE>
<H2>SEE ALSO</H2><PRE>
<B><A HREF="ncurses.3x.html">curses(3x)</A></B>, <B><A HREF="menu.3x.html">menu(3x)</A></B>.
</PRE>
<H2>NOTES</H2><PRE>
The header file <B><menu.h></B> automatically includes the header
file <B><curses.h></B>.
</PRE>
<H2>PORTABILITY</H2><PRE>
These routines emulate the System V menu library. They
were not supported on Version 7 or BSD versions.
</PRE>
<H2>AUTHORS</H2><PRE>
Juergen Pfeifer. Manual pages and adaptation for new
curses by Eric S. Raymond.
</PRE>
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