3 ****************************************************************************
4 * Copyright (c) 1998-2010,2018 Free Software Foundation, Inc. *
6 * Permission is hereby granted, free of charge, to any person obtaining a *
7 * copy of this software and associated documentation files (the *
8 * "Software"), to deal in the Software without restriction, including *
9 * without limitation the rights to use, copy, modify, merge, publish, *
10 * distribute, distribute with modifications, sublicense, and/or sell *
11 * copies of the Software, and to permit persons to whom the Software is *
12 * furnished to do so, subject to the following conditions: *
14 * The above copyright notice and this permission notice shall be included *
15 * in all copies or substantial portions of the Software. *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
25 * Except as contained in this notice, the name(s) of the above copyright *
26 * holders shall not be used in advertising or otherwise to promote the *
27 * sale, use or other dealings in this Software without prior written *
29 ****************************************************************************
30 * @Id: menu_hook.3x,v 1.12 2018/07/28 21:34:06 tom Exp @
32 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
35 <meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
36 <meta name="generator" content="Manpage converted by man2html - see https://invisible-island.net/scripts/readme.html#others_scripts">
37 <TITLE>menu_hook 3x</TITLE>
38 <link rev=made href="mailto:bug-ncurses@gnu.org">
39 <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
42 <H1 class="no-header">menu_hook 3x</H1>
44 <STRONG><A HREF="menu_hook.3x.html">menu_hook(3x)</A></STRONG> <STRONG><A HREF="menu_hook.3x.html">menu_hook(3x)</A></STRONG>
49 </PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
50 <STRONG>menu_hook</STRONG> - set hooks for automatic invocation by applications
53 </PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
54 <STRONG>#include</STRONG> <STRONG><menu.h></STRONG>
55 int set_item_init(MENU *menu, Menu_Hook func);
56 Menu_Hook item_init(const MENU *menu);
57 int set_item_term(MENU *menu, Menu_Hook func);
58 Menu_Hook item_term(const MENU *menu);
59 int set_menu_init(MENU *menu, Menu_Hook func);
60 Menu_Hook menu_init(const MENU *menu);
61 int set_menu_term(MENU *menu, Menu_Hook func);
62 Menu_Hook menu_term(const MENU *menu);
65 </PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
66 These functions make it possible to set hook functions to be called at
67 various points in the automatic processing of input event codes by
68 <STRONG>menu_driver</STRONG>.
70 The function <STRONG>set_item_init</STRONG> sets a hook to be called at menu-post time
71 and each time the selected item changes (after the change). <STRONG>item_init</STRONG>
72 returns the current item init hook, if any (<STRONG>NULL</STRONG> if there is no such
75 The function <STRONG>set_item_term</STRONG> sets a hook to be called at menu-unpost time
76 and each time the selected item changes (before the change). <STRONG>item_term</STRONG>
77 returns the current item term hook, if any (<STRONG>NULL</STRONG> if there is no such
80 The function <STRONG>set_menu_init</STRONG> sets a hook to be called at menu-post time
81 and just after the top row on the menu changes once it is posted.
82 <STRONG>menu_init</STRONG> returns the current menu init hook, if any (<STRONG>NULL</STRONG> if there is
85 The function <STRONG>set_menu_term</STRONG> sets a hook to be called at menu-unpost time
86 and just before the top row on the menu changes once it is posted.
87 <STRONG>menu_term</STRONG> returns the current menu term hook, if any (<STRONG>NULL</STRONG> if there is
91 </PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
92 Routines that return pointers return <STRONG>NULL</STRONG> on error. Other routines
93 return one of the following:
95 <STRONG>E_OK</STRONG> The routine succeeded.
97 <STRONG>E_SYSTEM_ERROR</STRONG>
98 System error occurred (see <STRONG>errno</STRONG>).
101 </PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
102 <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="menu.3x.html">menu(3x)</A></STRONG>.
105 </PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
106 The header file <STRONG><menu.h></STRONG> automatically includes the header file
107 <STRONG><curses.h></STRONG>.
110 </PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
111 These routines emulate the System V menu library. They were not sup-
112 ported on Version 7 or BSD versions.
115 </PRE><H2><a name="h2-AUTHORS">AUTHORS</a></H2><PRE>
116 Juergen Pfeifer. Manual pages and adaptation for new curses by Eric S.
121 <STRONG><A HREF="menu_hook.3x.html">menu_hook(3x)</A></STRONG>
125 <li><a href="#h2-NAME">NAME</a></li>
126 <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
127 <li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
128 <li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
129 <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
130 <li><a href="#h2-NOTES">NOTES</a></li>
131 <li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
132 <li><a href="#h2-AUTHORS">AUTHORS</a></li>