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* @Id: curs_variables.3x,v 1.4 2010/12/04 18:38:55 tom Exp @
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<H1>curs_variables 3x</H1>
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<PRE>
<!-- Manpage converted by man2html 3.0.1 -->
<STRONG><A HREF="curs_variables.3x.html">curs_variables(3x)</A></STRONG> <STRONG><A HREF="curs_variables.3x.html">curs_variables(3x)</A></STRONG>
</PRE>
<H2>NAME</H2><PRE>
<STRONG>COLORS</STRONG>, <STRONG>COLOR_PAIRS</STRONG>, <STRONG>COLS</STRONG>, <STRONG>ESCDELAY</STRONG>, <STRONG>LINES</STRONG>, <STRONG>TABSIZE</STRONG>,
<STRONG>curscr</STRONG>, <STRONG>newscr</STRONG>, <STRONG>stdscr</STRONG> - <STRONG>curses</STRONG> global variables
</PRE>
<H2>SYNOPSIS</H2><PRE>
<STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
<STRONG>int</STRONG> <STRONG>COLOR_PAIRS;</STRONG>
<STRONG>int</STRONG> <STRONG>COLORS;</STRONG>
<STRONG>int</STRONG> <STRONG>COLS;</STRONG>
<STRONG>int</STRONG> <STRONG>ESCDELAY;</STRONG>
<STRONG>int</STRONG> <STRONG>LINES;</STRONG>
<STRONG>int</STRONG> <STRONG>TABSIZE;</STRONG>
<STRONG>WINDOW</STRONG> <STRONG>*</STRONG> <STRONG>curscr;</STRONG>
<STRONG>WINDOW</STRONG> <STRONG>*</STRONG> <STRONG>newscr;</STRONG>
<STRONG>WINDOW</STRONG> <STRONG>*</STRONG> <STRONG>stdscr;</STRONG>
</PRE>
<H2>DESCRIPTION</H2><PRE>
This page summarizes variables provided by the <STRONG>curses</STRONG> li-
brary. A more complete description is given in the <STRONG>curs-</STRONG>
<STRONG><A HREF="ncurses.3x.html">es(3x)</A></STRONG> manual page.
Depending on the configuration, these may be actual vari-
ables, or macros (see <STRONG><A HREF="curs_threads.3x.html">curs_threads(3x)</A></STRONG>) which provide
read-only access to <EM>curses</EM>'s state. In either case, ap-
plications should treat them as read-only to avoid confus-
ing the library.
<STRONG>COLOR_PAIRS</STRONG>
After initializing curses, this variable contains the num-
ber of color pairs which the terminal can support. Usual-
ly the number of color pairs will be the product <STRONG>COL-</STRONG>
<STRONG>ORS</STRONG>*<STRONG>COLORS</STRONG>, however this is not always true:
<STRONG>o</STRONG> a few terminals use HLS colors, which do not follow
this rule
<STRONG>o</STRONG> terminals supporting a large number of colors are lim-
ited by the number of color pairs that can be repre-
sented in a <EM>signed</EM> <EM>short</EM> value.
<STRONG>COLORS</STRONG>
After initializing curses, this variable contains the num-
ber of colors which the terminal can support.
<STRONG>COLS</STRONG>
After initializing curses, this variable contains the
width of the screen, i.e., the number of columns.
<STRONG>ESCDELAY</STRONG>
This variable holds the number of milliseconds to wait af-
ter reading an escape character, to distinguish between an
individual escape character entered on the keyboard from
escape sequences sent by cursor- and function-keys (see
<STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>.
<STRONG>LINES</STRONG>
After initializing curses, this variable contains the
height of the screen, i.e., the number of lines.
<STRONG>TABSIZE</STRONG>
This variable holds the number of columns used by the
<EM>curses</EM> library when converting a tab character to spaces
as it adds the tab to a window (see <STRONG><A HREF="curs_addch.3x.html">curs_addch(3x)</A></STRONG>.
<STRONG>The</STRONG> <STRONG>Current</STRONG> <STRONG>Screen</STRONG>
This implementation of curses uses a special window <STRONG>curscr</STRONG>
to record its updates to the terminal screen.
<STRONG>The</STRONG> <STRONG>New</STRONG> <STRONG>Screen</STRONG>
This implementation of curses uses a special window <STRONG>newscr</STRONG>
to hold updates to the terminal screen before applying
them to <STRONG>curscr</STRONG>.
<STRONG>The</STRONG> <STRONG>Standard</STRONG> <STRONG>Screen</STRONG>
Upon initializing curses, a default window called <STRONG>stdscr</STRONG>,
which is the size of the terminal screen, is created.
Many curses functions use this window.
</PRE>
<H2>NOTES</H2><PRE>
The curses library is initialized using either
<STRONG><A HREF="initscr.3x.html">initscr(3x)</A></STRONG>, or <STRONG><A HREF="newterm.3x.html">newterm(3x)</A></STRONG>.
If <STRONG>curses</STRONG> is configured to use separate curses/terminfo
libraries, most of these variables reside in the curses
library.
</PRE>
<H2>PORTABILITY</H2><PRE>
ESCDELAY and TABSIZE are extensions, not provided in most
other implementations of curses.
</PRE>
<H2>SEE ALSO</H2><PRE>
<STRONG><A HREF="ncurses.3x.html">curses(3x)</A></STRONG>, <STRONG><A HREF="curs_threads.3x.html">curs_threads(3x)</A></STRONG>, <STRONG><A HREF="term_variables.3x.html">term_variables(3x)</A></STRONG>, <STRONG>termin-</STRONG>
<STRONG><A HREF="terminfo.3x.html">fo(3x)</A></STRONG>, <STRONG><A HREF="terminfo.5.html">terminfo(5)</A></STRONG>.
<STRONG><A HREF="curs_variables.3x.html">curs_variables(3x)</A></STRONG>
</PRE>
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