'\" t
+.\"***************************************************************************
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+.\"***************************************************************************
+.\"
+.\" $Id: menu_hook.3x,v 1.11 2010/12/04 18:40:45 tom Exp $
.TH menu_hook 3X ""
.SH NAME
-\fBmenu_hook\fR - set hooks for automatic invocation by applications
+\fBmenu_hook\fR \- set hooks for automatic invocation by applications
.SH SYNOPSIS
\fB#include <menu.h>\fR
.br
-int set_item_init(MENU *menu, void (*func)(MENU *));
+int set_item_init(MENU *menu, Menu_Hook func);
.br
-void (*)(MENU *) item_init(const MENU *menu);
+Menu_Hook item_init(const MENU *menu);
.br
-int set_item_term(MENU *menu, void (*func)(MENU *));
+int set_item_term(MENU *menu, Menu_Hook func);
.br
-void (*)(MENU *) item_term(const MENU *menu);
+Menu_Hook item_term(const MENU *menu);
.br
-int set_menu_init(MENU *menu, void (*func)(MENU *));
+int set_menu_init(MENU *menu, Menu_Hook func);
.br
-void (*)(MENU *) menu_init(const MENU *menu);
+Menu_Hook menu_init(const MENU *menu);
.br
-int set_menu_term(MENU *menu, void (*func)(MENU *));
+int set_menu_term(MENU *menu, Menu_Hook func);
.br
-void (*)(MENU *) menu_term(const MENU *menu);
+Menu_Hook menu_term(const MENU *menu);
.br
.SH 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 \fBmenu_driver\fR.
-
+points in the automatic processing of input event codes by \fBmenu_driver\fR.
+.PP
The function \fBset_item_init\fR sets a hook to be called at menu-post time and
each time the selected item changes (after the change). \fBitem_init\fR
returns the current item init hook, if any (\fBNULL\fR if there is no such
hook).
-
+.PP
The function \fBset_item_term\fR sets a hook to be called at menu-unpost time
and each time the selected item changes (before the change). \fBitem_term\fR
returns the current item term hook, if any (\fBNULL\fR if there is no such
hook).
-
+.PP
The function \fBset_menu_init\fR sets a hook to be called at menu-post time and
just after the top row on the menu changes once it is posted. \fBmenu_init\fR
returns the current menu init hook, if any (\fBNULL\fR if there is no such
hook).
-
+.PP
The function \fBset_menu_term\fR sets a hook to be called at menu-unpost time
and just before the top row on the menu changes once it is posted.
\fBmenu_term\fR returns the current menu term hook, if any (\fBNULL\fR if there
Routines that return pointers return \fBNULL\fR on error. Other routines
return one of the following:
.TP 5
-\fBE_OK\fR
+.B E_OK
The routine succeeded.
.TP 5
-\fBE_SYSTEM_ERROR\fR
+.B E_SYSTEM_ERROR
System error occurred (see \fBerrno\fR).
.SH SEE ALSO
\fBcurses\fR(3X), \fBmenu\fR(3X).
.SH AUTHORS
Juergen Pfeifer. Manual pages and adaptation for new curses by Eric
S. Raymond.
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