ncursesw-morphos/doc/html/man/curs_variables.3x.html
Thomas E. Dickey a3725e3927 ncurses 6.0 - patch 20150905
+ add note in curs_addch.3x about line-drawing when it depends upon
  UTF-8.
+ add tic -q option for consistency with infocmp, use it to suppress
  all comments from the "tic -I" output.
+ modify infocmp -q option to suppress the "Reconstructed from"
  header.
+ add infocmp/tic -Q option, which allows one to dump the compiled
  form of the terminal entry, in hexadecimal or base64.
2015-09-06 01:23:48 +00:00

215 lines
9.7 KiB
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<H1 class="no-header">curs_variables 3x</H1>
<PRE>
<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><a name="h2-NAME">NAME</a></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><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
<STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</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><a name="h2-DESCRIPTION">DESCRIPTION</a></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> and
<STRONG><A HREF="curs_opaque.3x.html">curs_opaque(3x)</A></STRONG>) which provide read-only access to <EM>curs-</EM>
<EM>es</EM>'s state. In either case, applications should treat
them as read-only to avoid confusing the library.
</PRE>
<H3><a name="h3-COLOR_PAIRS">COLOR_PAIRS</a></H3><PRE>
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.
</PRE>
<H3><a name="h3-COLORS">COLORS</a></H3><PRE>
After initializing curses, this variable contains the num-
ber of colors which the terminal can support.
</PRE>
<H3><a name="h3-COLS">COLS</a></H3><PRE>
After initializing curses, this variable contains the
width of the screen, i.e., the number of columns.
</PRE>
<H3><a name="h3-ESCDELAY">ESCDELAY</a></H3><PRE>
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>.
</PRE>
<H3><a name="h3-LINES">LINES</a></H3><PRE>
After initializing curses, this variable contains the
height of the screen, i.e., the number of lines.
</PRE>
<H3><a name="h3-TABSIZE">TABSIZE</a></H3><PRE>
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>.
</PRE>
<H3><a name="h3-The-Current-Screen">The Current Screen</a></H3><PRE>
This implementation of curses uses a special window <STRONG>curscr</STRONG>
to record its updates to the terminal screen.
</PRE>
<H3><a name="h3-The-New-Screen">The New Screen</a></H3><PRE>
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>.
</PRE>
<H3><a name="h3-The-Standard-Screen">The Standard Screen</a></H3><PRE>
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><a name="h2-NOTES">NOTES</a></H2><PRE>
The curses library is initialized using either
<STRONG><A HREF="curs_initscr.3x.html">curs_initscr(3x)</A></STRONG>, or <STRONG><A HREF="curs_initscr.3x.html">curs_initscr(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><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
ESCDELAY and TABSIZE are extensions, not provided in most
other implementations of curses.
ESCDELAY is an extension in AIX curses:
<STRONG>o</STRONG> In AIX, the units for ESCDELAY are <EM>fifths</EM> of a mil-
lisecond.
<STRONG>o</STRONG> The default value for AIX's ESCDELAY is 0.1 seconds.
<STRONG>o</STRONG> AIX also enforces a limit of 10,000 seconds for ESCDE-
LAY; this implementation currently has no upper limit.
This implementation has long used ESCDELAY with units of
milliseconds, making it impossible to be completely com-
patible with AIX. Likewise, most users have either decid-
ed to override the value, or rely upon its default value.
</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_opaque.3x.html">curs_opaque(3x)</A></STRONG>, <STRONG><A HREF="curs_terminfo.3x.html">curs_terminfo(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><A HREF="terminfo.5.html">terminfo(5)</A></STRONG>.
<STRONG><A HREF="curs_variables.3x.html">curs_variables(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-COLOR_PAIRS">COLOR_PAIRS</a></li>
<li><a href="#h3-COLORS">COLORS</a></li>
<li><a href="#h3-COLS">COLS</a></li>
<li><a href="#h3-ESCDELAY">ESCDELAY</a></li>
<li><a href="#h3-LINES">LINES</a></li>
<li><a href="#h3-TABSIZE">TABSIZE</a></li>
<li><a href="#h3-The-Current-Screen">The Current Screen</a></li>
<li><a href="#h3-The-New-Screen">The New Screen</a></li>
<li><a href="#h3-The-Standard-Screen">The Standard Screen</a></li>
</ul>
</li>
<li><a href="#h2-NOTES">NOTES</a></li>
<li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
<li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
</ul>
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