blob: e76dcc7e3f5c64043905b6c429002152dd9c2940 [file] [log] [blame]
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<!--
****************************************************************************
* Copyright (c) 1998-2006,2007 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: curs_slk.3x,v 1.16 2007/06/02 20:40:07 tom Exp @
-->
<HTML>
<HEAD>
<TITLE>curs_slk 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>curs_slk 3x</H1>
<HR>
<PRE>
<!-- Manpage converted by man2html 3.0.1 -->
<STRONG><A HREF="curs_slk.3x.html">curs_slk(3x)</A></STRONG> <STRONG><A HREF="curs_slk.3x.html">curs_slk(3x)</A></STRONG>
</PRE>
<H2>NAME</H2><PRE>
<STRONG>slk_init</STRONG>, <STRONG>slk_set</STRONG>, <STRONG>slk_refresh</STRONG>, <STRONG>slk_noutrefresh</STRONG>,
<STRONG>slk_label</STRONG>, <STRONG>slk_clear</STRONG>, <STRONG>slk_restore</STRONG>, <STRONG>slk_touch</STRONG>, <STRONG>slk_attron</STRONG>,
<STRONG>slk_attrset</STRONG>, <STRONG>slk_attroff</STRONG>, <STRONG>slk_attr_on</STRONG>, <STRONG>slk_attr_set</STRONG>,
<STRONG>slk_attr_off</STRONG>, <STRONG>slk_attr</STRONG>, <STRONG>slk_color</STRONG> - <STRONG>curses</STRONG> soft label
routines
</PRE>
<H2>SYNOPSIS</H2><PRE>
<STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>
<STRONG>int</STRONG> <STRONG>slk_init(int</STRONG> <STRONG>fmt);</STRONG>
<STRONG>int</STRONG> <STRONG>slk_set(int</STRONG> <STRONG>labnum,</STRONG> <STRONG>const</STRONG> <STRONG>char</STRONG> <STRONG>*label,</STRONG> <STRONG>int</STRONG> <STRONG>fmt);</STRONG>
<STRONG>int</STRONG> <STRONG>slk_refresh(void);</STRONG>
<STRONG>int</STRONG> <STRONG>slk_noutrefresh(void);</STRONG>
<STRONG>char</STRONG> <STRONG>*slk_label(int</STRONG> <STRONG>labnum);</STRONG>
<STRONG>int</STRONG> <STRONG>slk_clear(void);</STRONG>
<STRONG>int</STRONG> <STRONG>slk_restore(void);</STRONG>
<STRONG>int</STRONG> <STRONG>slk_touch(void);</STRONG>
<STRONG>int</STRONG> <STRONG>slk_attron(const</STRONG> <STRONG>chtype</STRONG> <STRONG>attrs);</STRONG>
<STRONG>int</STRONG> <STRONG>slk_attroff(const</STRONG> <STRONG>chtype</STRONG> <STRONG>attrs);</STRONG>
<STRONG>int</STRONG> <STRONG>slk_attrset(const</STRONG> <STRONG>chtype</STRONG> <STRONG>attrs);</STRONG>
<STRONG>int</STRONG> <STRONG>slk_attr_on(attr_t</STRONG> <STRONG>attrs,</STRONG> <STRONG>void*</STRONG> <STRONG>opts);</STRONG>
<STRONG>int</STRONG> <STRONG>slk_attr_off(const</STRONG> <STRONG>attr_t</STRONG> <STRONG>attrs,</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG> <STRONG>opts);</STRONG>
<STRONG>int</STRONG> <STRONG>slk_attr_set(const</STRONG> <STRONG>attr_t</STRONG> <STRONG>attrs,</STRONG>
<STRONG>short</STRONG> <STRONG>color_pair_number,</STRONG> <STRONG>void*</STRONG> <STRONG>opts);</STRONG>
<STRONG>attr_t</STRONG> <STRONG>slk_attr(void);</STRONG>
<STRONG>int</STRONG> <STRONG>slk_color(short</STRONG> <STRONG>color_pair_number);</STRONG>
</PRE>
<H2>DESCRIPTION</H2><PRE>
The slk* functions manipulate the set of soft function-key
labels that exist on many terminals. For those terminals
that do not have soft labels, <STRONG>curses</STRONG> takes over the bottom
line of <STRONG>stdscr</STRONG>, reducing the size of <STRONG>stdscr</STRONG> and the vari-
able <STRONG>LINES</STRONG>. <STRONG>curses</STRONG> standardizes on eight labels of up to
eight characters each. In addition to this, the ncurses
implementation supports a mode where it simulates 12 la-
bels of up to five characters each. This is most common
for todays PC like enduser devices. Please note that
ncurses simulates this mode by taking over up to two lines
at the bottom of the screen, it does not try to use any
hardware support for this mode.
The <STRONG>slk_init</STRONG> routine must be called before <STRONG>initscr</STRONG> or
<STRONG>newterm</STRONG> is called. If <STRONG>initscr</STRONG> eventually uses a line from
<STRONG>stdscr</STRONG> to emulate the soft labels, then <EM>fmt</EM> determines how
the labels are arranged on the screen. Setting <EM>fmt</EM> to <STRONG>0</STRONG>
indicates a 3-2-3 arrangement of the labels, <STRONG>1</STRONG> indicates a
4-4 arrangement and <STRONG>2</STRONG> indicates the PC like 4-4-4 mode. If
<STRONG>fmt</STRONG> is set to <STRONG>3</STRONG>, it is again the PC like 4-4-4 mode, but
in addition an index line is generated, helping the user
to identify the key numbers easily.
The <STRONG>slk_set</STRONG> routine requires <EM>labnum</EM> to be a label number,
from <STRONG>1</STRONG> to <STRONG>8</STRONG> (resp. <STRONG>12</STRONG>); <EM>label</EM> must be the string to be put
on the label, up to eight (resp. five) characters in
length. A null string or a null pointer sets up a blank
label. <EM>fmt</EM> is either <STRONG>0</STRONG>, <STRONG>1</STRONG>, or <STRONG>2</STRONG>, indicating whether the
label is to be left-justified, centered, or right-justi-
fied, respectively, within the label.
The <STRONG>slk_refresh</STRONG> and <STRONG>slk_noutrefresh</STRONG> routines correspond to
the <STRONG>wrefresh</STRONG> and <STRONG>wnoutrefresh</STRONG> routines.
The <STRONG>slk_label</STRONG> routine returns the current label for label
number <EM>labnum</EM>, with leading and trailing blanks stripped.
The <STRONG>slk_clear</STRONG> routine clears the soft labels from the
screen.
The <STRONG>slk_restore</STRONG> routine restores the soft labels to the
screen after a <STRONG>slk_clear</STRONG> has been performed.
The <STRONG>slk_touch</STRONG> routine forces all the soft labels to be
output the next time a <STRONG>slk_noutrefresh</STRONG> is performed.
The <STRONG>slk_attron</STRONG>, <STRONG>slk_attrset</STRONG>, <STRONG>slk_attroff</STRONG> and <STRONG>slk_attr</STRONG> rou-
tines correspond to <STRONG>attron</STRONG>, <STRONG>attrset</STRONG>, <STRONG>attroff</STRONG> and <STRONG>attr_get</STRONG>.
They have an effect only if soft labels are simulated on
the bottom line of the screen. The default highlight for
soft keys is A_STANDOUT (as in System V curses, which does
not document this fact).
The <STRONG>slk_color</STRONG> routine corresponds to <STRONG>color_set</STRONG>. It has an
effect only if soft labels are simulated on the bottom
line of the screen.
</PRE>
<H2>RETURN VALUE</H2><PRE>
These routines return <STRONG>ERR</STRONG> upon failure and OK (SVr4 speci-
fies only "an integer value other than <STRONG>ERR</STRONG>") upon success-
ful completion.
X/Open defines no error conditions. In this implementa-
tion
<STRONG>slk_attr</STRONG>
returns the attribute used for the soft keys.
<STRONG>slk_attroff</STRONG>, <STRONG>slk_attron</STRONG>, <STRONG>slk_clear</STRONG>,
<STRONG>slk_noutrefresh</STRONG>, <STRONG>slk_refresh</STRONG>, <STRONG>slk_touch</STRONG>
return an error if the terminal or the soft-
keys were not initialized.
<STRONG>slk_attrset</STRONG>
returns an error if the terminal or the soft-
keys were not initialized.
<STRONG>slk_attr_set</STRONG>
returns an error if the terminal or the soft-
keys were not initialized, or the color pair
is outside the range 0..COLOR_PAIRS-1, or opts
is not null.
<STRONG>slk_color</STRONG>
returns an error if the terminal or the soft-
keys were not initialized, or the color pair
is outside the range 0..COLOR_PAIRS-1.
<STRONG>slk_init</STRONG>
returns an error if the format parameter is
outside the range 0..3.
<STRONG>slk_label</STRONG>
returns <STRONG>NULL</STRONG> on error.
<STRONG>slk_set</STRONG>
returns an error if the terminal or the soft-
keys were not initialized, or the <EM>labnum</EM> pa-
rameter is outside the range of label counts,
or if the format parameter is outside the
range 0..2, or if memory for the labels cannot
be allocated.
</PRE>
<H2>NOTES</H2><PRE>
Most applications would use <STRONG>slk_noutrefresh</STRONG> because a <STRONG>wre-</STRONG>
<STRONG>fresh</STRONG> is likely to follow soon.
</PRE>
<H2>PORTABILITY</H2><PRE>
The XSI Curses standard, Issue 4, describes these func-
tions. It changes the argument type of the attribute-ma-
nipulation functions <STRONG>slk_attron</STRONG>, <STRONG>slk_attroff</STRONG>, <STRONG>slk_attrset</STRONG>
to be <STRONG>attr_t</STRONG>, and adds <STRONG>const</STRONG> qualifiers. The format codes
<STRONG>2</STRONG> and <STRONG>3</STRONG> for <STRONG>slk_init()</STRONG> and the function <STRONG>slk_attr</STRONG> are spe-
cific to ncurses.
</PRE>
<H2>SEE ALSO</H2><PRE>
<STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_attr.3x.html">curs_attr(3x)</A></STRONG>, <STRONG><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></STRONG>, <STRONG>curs_re-</STRONG>
<STRONG><A HREF="curs_refresh.3x.html">fresh(3x)</A></STRONG>
<STRONG><A HREF="curs_slk.3x.html">curs_slk(3x)</A></STRONG>
</PRE>
<HR>
<ADDRESS>
Man(1) output converted with
<a href="http://www.oac.uci.edu/indiv/ehood/man2html.html">man2html</a>
</ADDRESS>
</BODY>
</HTML>