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<H1>curs_attr 3x</H1>
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<PRE>
<!-- Manpage converted by man2html 3.0.1 -->
<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>NAME</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>SYNOPSIS</H2><PRE>
<STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
<STRONG>int</STRONG> <STRONG>attroff(int</STRONG> <STRONG>attrs);</STRONG>
<STRONG>int</STRONG> <STRONG>wattroff(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>attrs);</STRONG>
<STRONG>int</STRONG> <STRONG>attron(int</STRONG> <STRONG>attrs);</STRONG>
<STRONG>int</STRONG> <STRONG>wattron(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>attrs);</STRONG>
<STRONG>int</STRONG> <STRONG>attrset(int</STRONG> <STRONG>attrs);</STRONG>
<STRONG>int</STRONG> <STRONG>wattrset(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>attrs);</STRONG>
<STRONG>int</STRONG> <STRONG>color_set(short</STRONG> <STRONG>color_pair_number,</STRONG> <STRONG>void*</STRONG> <STRONG>opts);</STRONG>
<STRONG>int</STRONG> <STRONG>wcolor_set(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>short</STRONG> <STRONG>color_pair_number,</STRONG>
<STRONG>void*</STRONG> <STRONG>opts);</STRONG>
<STRONG>int</STRONG> <STRONG>standend(void);</STRONG>
<STRONG>int</STRONG> <STRONG>wstandend(WINDOW</STRONG> <STRONG>*win);</STRONG>
<STRONG>int</STRONG> <STRONG>standout(void);</STRONG>
<STRONG>int</STRONG> <STRONG>wstandout(WINDOW</STRONG> <STRONG>*win);</STRONG>
<STRONG>int</STRONG> <STRONG>attr_get(attr_t</STRONG> <STRONG>*attrs,</STRONG> <STRONG>short</STRONG> <STRONG>*pair,</STRONG> <STRONG>void</STRONG> <STRONG>*opts);</STRONG>
<STRONG>int</STRONG> <STRONG>wattr_get(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>attr_t</STRONG> <STRONG>*attrs,</STRONG> <STRONG>short</STRONG> <STRONG>*pair,</STRONG>
<STRONG>void</STRONG> <STRONG>*opts);</STRONG>
<STRONG>int</STRONG> <STRONG>attr_off(attr_t</STRONG> <STRONG>attrs,</STRONG> <STRONG>void</STRONG> <STRONG>*opts);</STRONG>
<STRONG>int</STRONG> <STRONG>wattr_off(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>attr_t</STRONG> <STRONG>attrs,</STRONG> <STRONG>void</STRONG> <STRONG>*opts);</STRONG>
<STRONG>int</STRONG> <STRONG>attr_on(attr_t</STRONG> <STRONG>attrs,</STRONG> <STRONG>void</STRONG> <STRONG>*opts);</STRONG>
<STRONG>int</STRONG> <STRONG>wattr_on(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>attr_t</STRONG> <STRONG>attrs,</STRONG> <STRONG>void</STRONG> <STRONG>*opts);</STRONG>
<STRONG>int</STRONG> <STRONG>attr_set(attr_t</STRONG> <STRONG>attrs,</STRONG> <STRONG>short</STRONG> <STRONG>pair,</STRONG> <STRONG>void</STRONG> <STRONG>*opts);</STRONG>
<STRONG>int</STRONG> <STRONG>wattr_set(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>attr_t</STRONG> <STRONG>attrs,</STRONG> <STRONG>short</STRONG> <STRONG>pair,</STRONG> <STRONG>void</STRONG>
<STRONG>*opts);</STRONG>
<STRONG>int</STRONG> <STRONG>chgat(int</STRONG> <STRONG>n,</STRONG> <STRONG>attr_t</STRONG> <STRONG>attr,</STRONG> <STRONG>short</STRONG> <STRONG>color,</STRONG>
<STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*opts)</STRONG>
<STRONG>int</STRONG> <STRONG>wchgat(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>n,</STRONG> <STRONG>attr_t</STRONG> <STRONG>attr,</STRONG>
<STRONG>short</STRONG> <STRONG>color,</STRONG> <STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*opts)</STRONG>
<STRONG>int</STRONG> <STRONG>mvchgat(int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x,</STRONG> <STRONG>int</STRONG> <STRONG>n,</STRONG> <STRONG>attr_t</STRONG> <STRONG>attr,</STRONG>
<STRONG>short</STRONG> <STRONG>color,</STRONG> <STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*opts)</STRONG>
<STRONG>int</STRONG> <STRONG>mvwchgat(WINDOW</STRONG> <STRONG>*win,</STRONG> <STRONG>int</STRONG> <STRONG>y,</STRONG> <STRONG>int</STRONG> <STRONG>x,</STRONG> <STRONG>int</STRONG> <STRONG>n,</STRONG>
<STRONG>attr_t</STRONG> <STRONG>attr,</STRONG> <STRONG>short</STRONG> <STRONG>color,</STRONG> <STRONG>const</STRONG> <STRONG>void</STRONG> <STRONG>*opts)</STRONG>
</PRE>
<H2>DESCRIPTION</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.
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.
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.
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>. The remaining
<STRONG>attr_</STRONG>* functions operate exactly like the corresponding
<STRONG>attr</STRONG>* functions, except that they take arguments of type
<STRONG>attr_t</STRONG> rather than <STRONG>int</STRONG>.
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>).
<STRONG>Attributes</STRONG>
The following video attributes, defined in <STRONG><curses.h></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>.
<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>NOTES</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>PORTABILITY</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
Older 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>RETURN VALUE</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>SEE ALSO</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>
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