ncursesw-morphos/doc/html/man/mitem_current.3x.html
Thomas E. Dickey 027d0c57c4 ncurses 5.9 - patch 20150516
+ amend change to ".pc" files to only use the extra loader flags which
  may have rpath options (report by Sven Joachim, cf: 20150502).
+ change versioning for dpkg's in test-packages for Ada95 and
  ncurses-examples for consistency with Debian, to work with package
  updates.
+ regenerate html manpages.
+ clarify handling of carriage return in waddch manual page; it was
  discussed only in the portability section (prompted by comment on
  Stack Overflow forum):
2015-05-16 21:01:22 +00:00

154 lines
6.6 KiB
HTML

<!--
* t
****************************************************************************
* Copyright (c) 1998-2006,2010 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************
* @Id: mitem_current.3x,v 1.13 2010/12/04 18:40:45 tom Exp @
-->
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
<HTML>
<HEAD>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="generator" content="Manpage converted by man2html - see http://invisible-island.net/scripts/readme.html#others_scripts">
<TITLE>mitem_current 3x</TITLE>
<link rev=made href="mailto:bug-ncurses@gnu.org">
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</HEAD>
<BODY>
<H1 class="no-header">mitem_current 3x</H1>
<PRE>
<STRONG><A HREF="mitem_current.3x.html">mitem_current(3x)</A></STRONG> <STRONG><A HREF="mitem_current.3x.html">mitem_current(3x)</A></STRONG>
</PRE>
<H2><a name="h2-NAME">NAME</a></H2><PRE>
<STRONG>mitem_current</STRONG> - set and get current_menu_item
</PRE>
<H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
<STRONG>#include</STRONG> <STRONG>&lt;menu.h&gt;</STRONG>
int set_current_item(MENU *menu, const ITEM *item);
ITEM *current_item(const MENU *menu);
int set_top_row(MENU *menu, int row);
int top_row(const MENU *menu);
int item_index(const ITEM *item);
</PRE>
<H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
The function <STRONG>set_current_item</STRONG> sets the current item (the
item on which the menu cursor is positioned). <STRONG>cur-</STRONG>
<STRONG>rent_item</STRONG> returns a pointer to the current item in the
given menu.
The function <STRONG>set_top_row</STRONG> sets the top row of the menu to
show the given row (the top row is initially 0, and is
reset to this value whenever the <STRONG>O_ROWMAJOR</STRONG> option is tog-
gled). The item leftmost on the given row becomes cur-
rent. The function <STRONG>top_row</STRONG> returns the number of the top
menu row being displayed.
The function <STRONG>item_index</STRONG> returns the (zero-origin) index of
<EM>item</EM> in the menu's item pointer list.
</PRE>
<H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
<STRONG>current_item</STRONG> returns a pointer (which may be <STRONG>NULL</STRONG>). It
does not set errno.
<STRONG>top_row</STRONG> and <STRONG>item_index</STRONG> return <STRONG>ERR</STRONG> (the general <STRONG>curses</STRONG>
error value) if their <EM>menu</EM> parameter is <STRONG>NULL</STRONG>.
<STRONG>set_current_item</STRONG> and <STRONG>set_top_row</STRONG> return one of the follow-
ing:
<STRONG>E_OK</STRONG> The routine succeeded.
<STRONG>E_BAD_ARGUMENT</STRONG>
Routine detected an incorrect or out-of-range argu-
ment.
<STRONG>E_BAD_STATE</STRONG>
Routine was called from an initialization or termina-
tion function.
<STRONG>E_NOT_CONNECTED</STRONG>
No items are connected to the menu.
<STRONG>E_SYSTEM_ERROR</STRONG>
System error occurred (see <STRONG>errno</STRONG>).
</PRE>
<H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
<STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="menu.3x.html">menu(3x)</A></STRONG>.
</PRE>
<H2><a name="h2-NOTES">NOTES</a></H2><PRE>
The header file <STRONG>&lt;menu.h&gt;</STRONG> automatically includes the header
file <STRONG>&lt;curses.h&gt;</STRONG>.
</PRE>
<H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
These routines emulate the System V menu library. They
were not supported on Version 7 or BSD versions.
The SVr4 menu library documentation specifies the <STRONG>top_row</STRONG>
and <STRONG>index_item</STRONG> error value as -1 (which is the value of
<STRONG>ERR</STRONG>).
</PRE>
<H2><a name="h2-AUTHORS">AUTHORS</a></H2><PRE>
Juergen Pfeifer. Manual pages and adaptation for new
curses by Eric S. Raymond.
<STRONG><A HREF="mitem_current.3x.html">mitem_current(3x)</A></STRONG>
</PRE>
<div class="nav">
<ul>
<li><a href="#h2-NAME">NAME</a></li>
<li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
<li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
<li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
<li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
<li><a href="#h2-NOTES">NOTES</a></li>
<li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
<li><a href="#h2-AUTHORS">AUTHORS</a></li>
</ul>
</div>
</BODY>
</HTML>