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31 * @Id: mitem_current.3x,v 1.20 2020/10/18 00:39:06 tom Exp @
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43 <H1 class="no-header">mitem_current 3X</H1>
45 <B><A HREF="mitem_current.3X.html">mitem_current(3X)</A></B> <B><A HREF="mitem_current.3X.html">mitem_current(3X)</A></B>
50 </PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
51 <B>mitem_current</B> - set and get current_menu_item
54 </PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
55 <B>#include</B> <B><menu.h></B>
57 <B>int</B> <B>set_current_item(MENU</B> <B>*</B><I>menu</I><B>,</B> <B>ITEM</B> <B>*</B><I>item</I><B>);</B>
58 <B>ITEM</B> <B>*current_item(const</B> <B>MENU</B> <B>*</B><I>menu</I><B>);</B>
60 <B>int</B> <B>set_top_row(MENU</B> <B>*</B><I>menu</I><B>,</B> <B>int</B> <I>row</I><B>);</B>
61 <B>int</B> <B>top_row(const</B> <B>MENU</B> <B>*</B><I>menu</I><B>);</B>
63 <B>int</B> <B>item_index(const</B> <B>ITEM</B> <B>*</B><I>item</I><B>);</B>
66 </PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
67 The function <B>set_current_item</B> sets the current item (the item on which
68 the menu cursor is positioned). <B>current_item</B> returns a pointer to the
69 current item in the given menu.
71 The function <B>set_top_row</B> sets the top row of the menu to show the given
72 row (the top row is initially 0, and is reset to this value whenever
73 the <B>O_ROWMAJOR</B> option is toggled). The item leftmost on the given row
74 becomes current. The function <B>top_row</B> returns the number of the top
75 menu row being displayed.
77 The function <B>item_index</B> returns the (zero-origin) index of <I>item</I> in the
78 menu's item pointer list.
81 </PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
82 <B>current_item</B> returns a pointer (which may be <B>NULL</B>). It does not set
85 <B>top_row</B> and <B>item_index</B> return <B>ERR</B> (the general <B>curses</B> error value) if
86 their <I>menu</I> parameter is <B>NULL</B>.
88 <B>set_current_item</B> and <B>set_top_row</B> return one of the following:
90 <B>E_OK</B> The routine succeeded.
93 Routine detected an incorrect or out-of-range argument.
96 Routine was called from an initialization or termination function.
98 <B>E_NOT_CONNECTED</B>
99 No items are connected to the menu.
101 <B>E_SYSTEM_ERROR</B>
102 System error occurred (see <B>errno(3)</B>).
105 </PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
106 <B><A HREF="curses.3X.html">curses(3X)</A></B>, <B><A HREF="menu.3X.html">menu(3X)</A></B>.
109 </PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
110 The header file <B><menu.h></B> automatically includes the header file
111 <B><curses.h></B>.
114 </PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
115 These routines emulate the System V menu library. They were not
116 supported on Version 7 or BSD versions.
118 The SVr4 menu library documentation specifies the <B>top_row</B> and
119 <B>index_item</B> error value as -1 (which is the value of <B>ERR</B>).
122 </PRE><H2><a name="h2-AUTHORS">AUTHORS</a></H2><PRE>
123 Juergen Pfeifer. Manual pages and adaptation for new curses by Eric S.
128 <B><A HREF="mitem_current.3X.html">mitem_current(3X)</A></B>
132 <li><a href="#h2-NAME">NAME</a></li>
133 <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
134 <li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
135 <li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
136 <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
137 <li><a href="#h2-NOTES">NOTES</a></li>
138 <li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
139 <li><a href="#h2-AUTHORS">AUTHORS</a></li>