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* @Id: curs_attr.3x,v 1.27 2003/12/27 18:50:51 tom Exp @
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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 win-
dow 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>wad-</STRONG>
<STRONG>dch</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
attributes 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
argument 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>
argument is not presently used, but is reserved for the
future (leave it <STRONG>NULL</STRONG>). Note that changing the attributes
does not imply that a subsequent <STRONG>refresh</STRONG> will update the
screen to match, since the character values are not modi-
fied. Use <STRONG>touchwin</STRONG> to force the screen to match the
updated attributes.
<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'ed with the characters passed to <STRONG>addch</STRONG>.
<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_CHARTEXT</STRONG> Bit-mask to extract a character
<STRONG>COLOR_PAIR(</STRONG><EM>n</EM><STRONG>)</STRONG> Color-pair number <EM>n</EM>
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.
</PRE>
<H2>PORTABILITY</H2><PRE>
All these functions are supported in the XSI Curses stan-
dard, 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 sup-
ported under SVr4.
The XSI Curses standard states that whether the tradi-
tional functions <STRONG>attron</STRONG>/<STRONG>attroff</STRONG>/<STRONG>attrset</STRONG> can manipulate
attributes 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>).
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>wattr_set</STRONG>. These are intended to work with a new series
of highlight macros prefixed with <STRONG>WA_</STRONG>.
<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
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) which this
curses does not yet support.
</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_attr.3x.html">curs_attr(3x)</A></STRONG>
</PRE>
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