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31 * @Id: menu_hook.3x,v 1.14 2020/02/02 23:34:34 tom Exp @
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43 <H1 class="no-header">menu_hook 3x</H1>
45 <STRONG><A HREF="menu_hook.3x.html">menu_hook(3x)</A></STRONG> <STRONG><A HREF="menu_hook.3x.html">menu_hook(3x)</A></STRONG>
50 </PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
51 <STRONG>menu_hook</STRONG> - set hooks for automatic invocation by applications
54 </PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
55 <STRONG>#include</STRONG> <STRONG><menu.h></STRONG>
56 int set_item_init(MENU *menu, Menu_Hook func);
57 Menu_Hook item_init(const MENU *menu);
58 int set_item_term(MENU *menu, Menu_Hook func);
59 Menu_Hook item_term(const MENU *menu);
60 int set_menu_init(MENU *menu, Menu_Hook func);
61 Menu_Hook menu_init(const MENU *menu);
62 int set_menu_term(MENU *menu, Menu_Hook func);
63 Menu_Hook menu_term(const MENU *menu);
66 </PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
67 These functions make it possible to set hook functions to be called at
68 various points in the automatic processing of input event codes by
69 <STRONG>menu_driver</STRONG>.
71 The function <STRONG>set_item_init</STRONG> sets a hook to be called at menu-post time
72 and each time the selected item changes (after the change). <STRONG>item_init</STRONG>
73 returns the current item init hook, if any (<STRONG>NULL</STRONG> if there is no such
76 The function <STRONG>set_item_term</STRONG> sets a hook to be called at menu-unpost time
77 and each time the selected item changes (before the change). <STRONG>item_term</STRONG>
78 returns the current item term hook, if any (<STRONG>NULL</STRONG> if there is no such
81 The function <STRONG>set_menu_init</STRONG> sets a hook to be called at menu-post time
82 and just after the top row on the menu changes once it is posted.
83 <STRONG>menu_init</STRONG> returns the current menu init hook, if any (<STRONG>NULL</STRONG> if there is
86 The function <STRONG>set_menu_term</STRONG> sets a hook to be called at menu-unpost time
87 and just before the top row on the menu changes once it is posted.
88 <STRONG>menu_term</STRONG> returns the current menu term hook, if any (<STRONG>NULL</STRONG> if there is
92 </PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
93 Routines that return pointers return <STRONG>NULL</STRONG> on error. Other routines
94 return one of the following:
96 <STRONG>E_OK</STRONG> The routine succeeded.
98 <STRONG>E_SYSTEM_ERROR</STRONG>
99 System error occurred (see <STRONG>errno(3)</STRONG>).
102 </PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
103 <STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="menu.3x.html">menu(3x)</A></STRONG>.
106 </PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
107 The header file <STRONG><menu.h></STRONG> automatically includes the header file
108 <STRONG><curses.h></STRONG>.
111 </PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
112 These routines emulate the System V menu library. They were not sup-
113 ported on Version 7 or BSD versions.
116 </PRE><H2><a name="h2-AUTHORS">AUTHORS</a></H2><PRE>
117 Juergen Pfeifer. Manual pages and adaptation for new curses by Eric S.
122 <STRONG><A HREF="menu_hook.3x.html">menu_hook(3x)</A></STRONG>
126 <li><a href="#h2-NAME">NAME</a></li>
127 <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
128 <li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
129 <li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
130 <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
131 <li><a href="#h2-NOTES">NOTES</a></li>
132 <li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
133 <li><a href="#h2-AUTHORS">AUTHORS</a></li>