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30 * @Id: mitem_current.3x,v 1.16 2019/03/23 21:47:36 tom Exp @
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42 <H1 class="no-header">mitem_current 3x</H1>
44 <STRONG><A HREF="mitem_current.3x.html">mitem_current(3x)</A></STRONG> <STRONG><A HREF="mitem_current.3x.html">mitem_current(3x)</A></STRONG>
49 </PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
50 <STRONG>mitem_current</STRONG> - set and get current_menu_item
53 </PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
54 <STRONG>#include</STRONG> <STRONG><menu.h></STRONG>
55 int set_current_item(MENU *menu, ITEM *item);
56 ITEM *current_item(const MENU *menu);
57 int set_top_row(MENU *menu, int row);
58 int top_row(const MENU *menu);
59 int item_index(const ITEM *item);
62 </PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
63 The function <STRONG>set_current_item</STRONG> sets the current item (the item on which
64 the menu cursor is positioned). <STRONG>current_item</STRONG> returns a pointer to the
65 current item in the given menu.
67 The function <STRONG>set_top_row</STRONG> sets the top row of the menu to show the given
68 row (the top row is initially 0, and is reset to this value whenever
69 the <STRONG>O_ROWMAJOR</STRONG> option is toggled). The item leftmost on the given row
70 becomes current. The function <STRONG>top_row</STRONG> returns the number of the top
71 menu row being displayed.
73 The function <STRONG>item_index</STRONG> returns the (zero-origin) index of <EM>item</EM> in the
74 menu's item pointer list.
77 </PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
78 <STRONG>current_item</STRONG> returns a pointer (which may be <STRONG>NULL</STRONG>). It does not set
81 <STRONG>top_row</STRONG> and <STRONG>item_index</STRONG> return <STRONG>ERR</STRONG> (the general <STRONG>curses</STRONG> error value) if
82 their <EM>menu</EM> parameter is <STRONG>NULL</STRONG>.
84 <STRONG>set_current_item</STRONG> and <STRONG>set_top_row</STRONG> return one of the following:
86 <STRONG>E_OK</STRONG> The routine succeeded.
88 <STRONG>E_BAD_ARGUMENT</STRONG>
89 Routine detected an incorrect or out-of-range argument.
91 <STRONG>E_BAD_STATE</STRONG>
92 Routine was called from an initialization or termination function.
94 <STRONG>E_NOT_CONNECTED</STRONG>
95 No items are connected to the menu.
97 <STRONG>E_SYSTEM_ERROR</STRONG>
98 System error occurred (see <STRONG>errno(3)</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.
114 The SVr4 menu library documentation specifies the <STRONG>top_row</STRONG> and
115 <STRONG>index_item</STRONG> error value as -1 (which is the value of <STRONG>ERR</STRONG>).
118 </PRE><H2><a name="h2-AUTHORS">AUTHORS</a></H2><PRE>
119 Juergen Pfeifer. Manual pages and adaptation for new curses by Eric S.
124 <STRONG><A HREF="mitem_current.3x.html">mitem_current(3x)</A></STRONG>
128 <li><a href="#h2-NAME">NAME</a></li>
129 <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
130 <li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
131 <li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
132 <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
133 <li><a href="#h2-NOTES">NOTES</a></li>
134 <li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
135 <li><a href="#h2-AUTHORS">AUTHORS</a></li>