blob: 6ea78f91a6126726b439bbf5f5a7ceb10d9c2acd [file] [log] [blame]
<!--
* t
****************************************************************************
* Copyright (c) 1998-2013,2015 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_attr.3x,v 1.40 2015/07/20 23:35:38 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>curs_attr 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">curs_attr 3x</H1>
<PRE>
<STRONG><A HREF="curs_attr.3x.html">curs_attr(3x)</A></STRONG> <STRONG><A HREF="curs_attr.3x.html">curs_attr(3x)</A></STRONG>
</PRE>
<H2><a name="h2-NAME">NAME</a></H2><PRE>
<STRONG>attroff</STRONG>, <STRONG>wattroff</STRONG>, <STRONG>attron</STRONG>, <STRONG>wattron</STRONG>, <STRONG>attrset</STRONG>, <STRONG>wattrset</STRONG>,
<STRONG>color_set</STRONG>, <STRONG>wcolor_set</STRONG>, <STRONG>standend</STRONG>, <STRONG>wstandend</STRONG>, <STRONG>standout</STRONG>,
<STRONG>wstandout</STRONG>, <STRONG>attr_get</STRONG>, <STRONG>wattr_get</STRONG>, <STRONG>attr_off</STRONG>, <STRONG>wattr_off</STRONG>,
<STRONG>attr_on</STRONG>, <STRONG>wattr_on</STRONG>, <STRONG>attr_set</STRONG>, <STRONG>wattr_set</STRONG>, <STRONG>chgat</STRONG>, <STRONG>wchgat</STRONG>,
<STRONG>mvchgat</STRONG>, <STRONG>mvwchgat</STRONG>, <STRONG>PAIR_NUMBER</STRONG> - <STRONG>curses</STRONG> character and
window attribute control routines
</PRE>
<H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
<STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>
<STRONG>int</STRONG> <STRONG>attroff(int</STRONG> <EM>attrs);</EM>
<STRONG>int</STRONG> <STRONG>wattroff(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>attrs</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>attron(int</STRONG> <EM>attrs</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>wattron(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>attrs</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>attrset(int</STRONG> <EM>attrs</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>wattrset(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>attrs</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>color_set(short</STRONG> <EM>color</EM><STRONG>_</STRONG><EM>pair</EM><STRONG>_</STRONG><EM>number</EM><STRONG>,</STRONG> <STRONG>void*</STRONG> <EM>opts</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>wcolor_set(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>short</STRONG> <EM>color</EM><STRONG>_</STRONG><EM>pair</EM><STRONG>_</STRONG><EM>number</EM><STRONG>,</STRONG>
<STRONG>void*</STRONG> <EM>opts);</EM>
<STRONG>int</STRONG> <STRONG>standend(void);</STRONG>
<STRONG>int</STRONG> <STRONG>wstandend(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>standout(void);</STRONG>
<STRONG>int</STRONG> <STRONG>wstandout(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>attr_get(attr_t</STRONG> <STRONG>*</STRONG><EM>attrs</EM><STRONG>,</STRONG> <STRONG>short</STRONG> <STRONG>*</STRONG><EM>pair</EM><STRONG>,</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>wattr_get(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>attr_t</STRONG> <STRONG>*</STRONG><EM>attrs</EM><STRONG>,</STRONG> <STRONG>short</STRONG> <STRONG>*</STRONG><EM>pair</EM><STRONG>,</STRONG>
<STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>attr_off(attr_t</STRONG> <EM>attrs</EM><STRONG>,</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>wattr_off(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>attr_t</STRONG> <EM>attrs</EM><STRONG>,</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>attr_on(attr_t</STRONG> <EM>attrs</EM><STRONG>,</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>wattr_on(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>attr_t</STRONG> <EM>attrs</EM><STRONG>,</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>attr_set(attr_t</STRONG> <EM>attrs</EM><STRONG>,</STRONG> <STRONG>short</STRONG> <EM>pair</EM><STRONG>,</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>wattr_set(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>attr_t</STRONG> <EM>attrs</EM><STRONG>,</STRONG> <STRONG>short</STRONG> <EM>pair</EM><STRONG>,</STRONG> <STRONG>void</STRONG>
<STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>chgat(int</STRONG> <EM>n</EM><STRONG>,</STRONG> <STRONG>attr_t</STRONG> <EM>attr</EM><STRONG>,</STRONG> <STRONG>short</STRONG> <EM>color</EM><STRONG>,</STRONG>
<STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>wchgat(WINDOW</STRONG> <STRONG>*</STRONG><EM>win</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>,</STRONG> <STRONG>attr_t</STRONG> <EM>attr</EM><STRONG>,</STRONG>
<STRONG>short</STRONG> <EM>color</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>mvchgat(int</STRONG> <EM>y</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>x</EM><STRONG>,</STRONG> <STRONG>int</STRONG> <EM>n</EM><STRONG>,</STRONG> <STRONG>attr_t</STRONG> <EM>attr</EM><STRONG>,</STRONG>
<STRONG>short</STRONG> <EM>color</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
<STRONG>int</STRONG> <STRONG>mvwchgat(WINDOW</STRONG> <STRONG>*</STRONG><EM>win,</EM> <EM>int</EM> <EM>y,</EM> <EM>int</EM> <EM>x,</EM> <EM>int</EM> <EM>n,</EM>
<STRONG>attr_t</STRONG> <EM>attr</EM><STRONG>,</STRONG> <STRONG>short</STRONG> <EM>color</EM><STRONG>,</STRONG> <STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*</STRONG><EM>opts</EM><STRONG>);</STRONG>
</PRE>
<H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
These routines manipulate the current attributes of the
named window. The current attributes of a window apply to
all characters that are written into the window with <STRONG>wadd-</STRONG>
<STRONG>ch</STRONG>, <STRONG>waddstr</STRONG> and <STRONG>wprintw</STRONG>. Attributes are a property of the
character, and move with the character through any
scrolling and insert/delete line/character operations. To
the extent possible, they are displayed as appropriate
modifications to the graphic rendition of characters put
on the screen.
</PRE>
<H3><a name="h3-attrset">attrset</a></H3><PRE>
The routine <STRONG>attrset</STRONG> sets the current attributes of the
given window to <EM>attrs</EM>. The routine <STRONG>attroff</STRONG> turns off the
named attributes without turning any other attributes on
or off. The routine <STRONG>attron</STRONG> turns on the named attributes
without affecting any others. The routine <STRONG>standout</STRONG> is the
same as <STRONG>attron(A_STANDOUT)</STRONG>. The routine <STRONG>standend</STRONG> is the
same as <STRONG>attrset(A_NORMAL)</STRONG> or <STRONG>attrset(0)</STRONG>, that is, it turns
off all attributes.
The <STRONG>attrset</STRONG> and related routines do not affect the at-
tributes used when erasing portions of the window. See
<STRONG><A HREF="curs_bkgd.3x.html">curs_bkgd(3x)</A></STRONG> for functions which modify the attributes
used for erasing and clearing.
</PRE>
<H3><a name="h3-attr_set">attr_set</a></H3><PRE>
The <STRONG>attrset</STRONG> routine is actually a legacy feature predating
SVr4 curses but kept in X/Open Curses for the same reason
that SVr4 curses kept it: compatbility. The routine <STRONG>at-</STRONG>
<STRONG>tr_set</STRONG> provides for passing a color-pair parameter.
The remaining <STRONG>attr_</STRONG>* functions operate exactly like the
corresponding <STRONG>attr</STRONG>* functions, except that they take argu-
ments of type <STRONG>attr_t</STRONG> rather than <STRONG>int</STRONG>.
</PRE>
<H3><a name="h3-color_set">color_set</a></H3><PRE>
The routine <STRONG>color_set</STRONG> sets the current color of the given
window to the foreground/background combination described
by the color_pair_number. The parameter opts is reserved
for future use, applications must supply a null pointer.
</PRE>
<H3><a name="h3-attr_get">attr_get</a></H3><PRE>
The routine <STRONG>wattr_get</STRONG> returns the current attribute and
color pair for the given window; <STRONG>attr_get</STRONG> returns the cur-
rent attribute and color pair for <STRONG>stdscr</STRONG>.
There is no corresponding <STRONG>attrget</STRONG> function as such in
X/Open Curses, although ncurses provides <STRONG>getattrs</STRONG> (see
<STRONG><A HREF="curs_legacy.3x.html">curs_legacy(3x)</A></STRONG>).
</PRE>
<H3><a name="h3-chgat">chgat</a></H3><PRE>
The routine <STRONG>chgat</STRONG> changes the attributes of a given number
of characters starting at the current cursor location of
<STRONG>stdscr</STRONG>. It does not update the cursor and does not per-
form wrapping. A character count of -1 or greater than
the remaining window width means to change attributes all
the way to the end of the current line. The <STRONG>wchgat</STRONG> func-
tion generalizes this to any window; the <STRONG>mvwchgat</STRONG> function
does a cursor move before acting. In these functions, the
color argument is a color-pair index (as in the first ar-
gument of <EM>init</EM><STRONG>_</STRONG><EM>pair</EM>, see <STRONG><A HREF="curs_color.3x.html">curs_color(3x)</A></STRONG>). The <STRONG>opts</STRONG> argu-
ment is not presently used, but is reserved for the future
(leave it <STRONG>NULL</STRONG>).
</PRE>
<H3><a name="h3-Attributes">Attributes</a></H3><PRE>
The following video attributes, defined in <STRONG>&lt;curses.h&gt;</STRONG>, can
be passed to the routines <STRONG>attron</STRONG>, <STRONG>attroff</STRONG>, and <STRONG>attrset</STRONG>, or
OR'd with the characters passed to <STRONG>addch</STRONG> (see curs_add-
<STRONG><A HREF="ch.3x.html">ch(3x)</A></STRONG>).
<EM>Name</EM> <EM>Description</EM>
------------------------------------------------------------
<STRONG>A_NORMAL</STRONG> Normal display (no highlight)
<STRONG>A_STANDOUT</STRONG> Best highlighting mode of the terminal.
<STRONG>A_UNDERLINE</STRONG> Underlining
<STRONG>A_REVERSE</STRONG> Reverse video
<STRONG>A_BLINK</STRONG> Blinking
<STRONG>A_DIM</STRONG> Half bright
<STRONG>A_BOLD</STRONG> Extra bright or bold
<STRONG>A_PROTECT</STRONG> Protected mode
<STRONG>A_INVIS</STRONG> Invisible or blank mode
<STRONG>A_ALTCHARSET</STRONG> Alternate character set
<STRONG>A_ITALIC</STRONG> Italics (non-X/Open extension)
<STRONG>A_CHARTEXT</STRONG> Bit-mask to extract a character
<STRONG>COLOR_PAIR(</STRONG><EM>n</EM><STRONG>)</STRONG> Color-pair number <EM>n</EM>
These video attributes are supported by <STRONG>attr_on</STRONG> and relat-
ed functions (which also support the attributes recognized
by <STRONG>attron</STRONG>, etc.):
<EM>Name</EM> <EM>Description</EM>
-----------------------------------------
<STRONG>WA_HORIZONTAL</STRONG> Horizontal highlight
<STRONG>WA_LEFT</STRONG> Left highlight
<STRONG>WA_LOW</STRONG> Low highlight
<STRONG>WA_RIGHT</STRONG> Right highlight
<STRONG>WA_TOP</STRONG> Top highlight
<STRONG>WA_VERTICAL</STRONG> Vertical highlight
For consistency
The following macro is the reverse of <STRONG>COLOR_PAIR(</STRONG><EM>n</EM><STRONG>)</STRONG>:
<STRONG>PAIR_NUMBER(</STRONG><EM>attrs</EM>) Returns the pair number associated
with the <STRONG>COLOR_PAIR(</STRONG><EM>n</EM><STRONG>)</STRONG> attribute.
The return values of many of these routines are not mean-
ingful (they are implemented as macro-expanded assignments
and simply return their argument). The SVr4 manual page
claims (falsely) that these routines always return <STRONG>1</STRONG>.
</PRE>
<H2><a name="h2-NOTES">NOTES</a></H2><PRE>
Note that <STRONG>attroff</STRONG>, <STRONG>wattroff</STRONG>, <STRONG>attron</STRONG>, <STRONG>wattron</STRONG>, <STRONG>attrset</STRONG>,
<STRONG>wattrset</STRONG>, <STRONG>standend</STRONG> and <STRONG>standout</STRONG> may be macros.
<STRONG>COLOR_PAIR</STRONG> values can only be OR'd with attributes if the
pair number is less than 256. The alternate functions
such as <STRONG>color_set</STRONG> can pass a color pair value directly.
However, ncurses ABI 4 and 5 simply OR this value within
the alternate functions. You must use ncurses ABI 6 to
support more than 256 color pairs.
</PRE>
<H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
These functions are supported in the XSI Curses standard,
Issue 4. The standard defined the dedicated type for
highlights, <STRONG>attr_t</STRONG>, which is not defined in SVr4 curses.
The functions taking <STRONG>attr_t</STRONG> arguments are not supported
under SVr4.
The XSI Curses standard states that whether the tradition-
al functions <STRONG>attron</STRONG>/<STRONG>attroff</STRONG>/<STRONG>attrset</STRONG> can manipulate at-
tributes other than <STRONG>A_BLINK</STRONG>, <STRONG>A_BOLD</STRONG>, <STRONG>A_DIM</STRONG>, <STRONG>A_REVERSE</STRONG>,
<STRONG>A_STANDOUT</STRONG>, or <STRONG>A_UNDERLINE</STRONG> is "unspecified". Under this
implementation as well as SVr4 curses, these functions
correctly manipulate all other highlights (specifically,
<STRONG>A_ALTCHARSET</STRONG>, <STRONG>A_PROTECT</STRONG>, and <STRONG>A_INVIS</STRONG>).
This implementation provides the <STRONG>A_ITALIC</STRONG> attribute for
terminals which have the <EM>enter</EM><STRONG>_</STRONG><EM>italics</EM><STRONG>_</STRONG><EM>mode</EM> (sitm) and <EM>ex-</EM>
<EM>it</EM><STRONG>_</STRONG><EM>italics</EM><STRONG>_</STRONG><EM>mode</EM> (ritm) capabilities. Italics are not men-
tioned in X/Open Curses. Unlike the other video at-
tributes, <STRONG>I_ITALIC</STRONG> is unrelated to the <EM>set</EM><STRONG>_</STRONG><EM>attributes</EM> ca-
pabilities. This implementation makes the assumption that
<EM>exit</EM><STRONG>_</STRONG><EM>attribute</EM><STRONG>_</STRONG><EM>mode</EM> may also reset italics.
XSI Curses added the new entry points, <STRONG>attr_get</STRONG>, <STRONG>attr_on</STRONG>,
<STRONG>attr_off</STRONG>, <STRONG>attr_set</STRONG>, <STRONG>wattr_on</STRONG>, <STRONG>wattr_off</STRONG>, <STRONG>wattr_get</STRONG>, <STRONG>wat-</STRONG>
<STRONG>tr_set</STRONG>. These are intended to work with a new series of
highlight macros prefixed with <STRONG>WA_</STRONG>. The older macros have
direct counterparts in the newer set of names:
<EM>Name</EM> <EM>Description</EM>
------------------------------------------------------------
<STRONG>WA_NORMAL</STRONG> Normal display (no highlight)
<STRONG>WA_STANDOUT</STRONG> Best highlighting mode of the terminal.
<STRONG>WA_UNDERLINE</STRONG> Underlining
<STRONG>WA_REVERSE</STRONG> Reverse video
<STRONG>WA_BLINK</STRONG> Blinking
<STRONG>WA_DIM</STRONG> Half bright
<STRONG>WA_BOLD</STRONG> Extra bright or bold
<STRONG>WA_ALTCHARSET</STRONG> Alternate character set
Very old versions of this library did not force an update
of the screen when changing the attributes. Use <STRONG>touchwin</STRONG>
to force the screen to match the updated attributes.
The XSI curses standard specifies that each pair of corre-
sponding <STRONG>A_</STRONG> and <STRONG>WA_</STRONG>-using functions operates on the same
current-highlight information.
The XSI standard extended conformance level adds new high-
lights <STRONG>A_HORIZONTAL</STRONG>, <STRONG>A_LEFT</STRONG>, <STRONG>A_LOW</STRONG>, <STRONG>A_RIGHT</STRONG>, <STRONG>A_TOP</STRONG>, <STRONG>A_VER-</STRONG>
<STRONG>TICAL</STRONG> (and corresponding <STRONG>WA_</STRONG> macros for each). As of Au-
gust 2013, no known terminal provides these highlights
(i.e., via the <STRONG>sgr1</STRONG> capability).
</PRE>
<H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
All routines return the integer <STRONG>OK</STRONG> on success, or <STRONG>ERR</STRONG> on
failure.
X/Open does not define any error conditions.
This implementation returns an error if the window pointer
is null. The <STRONG>wcolor_set</STRONG> function returns an error if the
color pair parameter is outside the range 0..COL-
OR_PAIRS-1. This implementation also provides <STRONG>getattrs</STRONG>
for compatibility with older versions of curses.
Functions with a "mv" prefix first perform a cursor move-
ment using <STRONG>wmove</STRONG>, and return an error if the position is
outside the window, or if the window pointer is null.
</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="curs_addch.3x.html">curs_addch(3x)</A></STRONG>, <STRONG><A HREF="curs_addstr.3x.html">curs_addstr(3x)</A></STRONG>,
<STRONG><A HREF="curs_bkgd.3x.html">curs_bkgd(3x)</A></STRONG>, <STRONG><A HREF="curs_printw.3x.html">curs_printw(3x)</A></STRONG>, <STRONG><A HREF="curs_variables.3x.html">curs_variables(3x)</A></STRONG>
<STRONG><A HREF="curs_attr.3x.html">curs_attr(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>
<ul>
<li><a href="#h3-attrset">attrset</a></li>
<li><a href="#h3-attr_set">attr_set</a></li>
<li><a href="#h3-color_set">color_set</a></li>
<li><a href="#h3-attr_get">attr_get</a></li>
<li><a href="#h3-chgat">chgat</a></li>
<li><a href="#h3-Attributes">Attributes</a></li>
</ul>
</li>
<li><a href="#h2-NOTES">NOTES</a></li>
<li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
<li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
<li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
</ul>
</div>
</BODY>
</HTML>