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<H1 class="no-header">term_variables 3x</H1>
<PRE>
<STRONG><A HREF="term_variables.3x.html">term_variables(3x)</A></STRONG> <STRONG><A HREF="term_variables.3x.html">term_variables(3x)</A></STRONG>
</PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
<STRONG>SP</STRONG>, <STRONG>acs_map</STRONG>, <STRONG>boolcodes</STRONG>, <STRONG>boolfnames</STRONG>, <STRONG>boolnames</STRONG>, <STRONG>cur_term</STRONG>, <STRONG>numcodes</STRONG>,
<STRONG>numfnames</STRONG>, <STRONG>numnames</STRONG>, <STRONG>strcodes</STRONG>, <STRONG>strfnames</STRONG>, <STRONG>strnames</STRONG>, <STRONG>ttytype</STRONG> - <STRONG>curses</STRONG>
terminfo global variables
</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
<STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
<STRONG>#include</STRONG> <STRONG><term.h></STRONG>
<STRONG>chtype</STRONG> <STRONG>acs_map[];</STRONG>
<STRONG>SCREEN</STRONG> <STRONG>*</STRONG> <STRONG>SP;</STRONG>
<STRONG>TERMINAL</STRONG> <STRONG>*</STRONG> <STRONG>cur_term;</STRONG>
<STRONG>char</STRONG> <STRONG>ttytype[];</STRONG>
<STRONG>NCURSES_CONST</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG> <STRONG>const</STRONG> <STRONG>boolcodes[];</STRONG>
<STRONG>NCURSES_CONST</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG> <STRONG>const</STRONG> <STRONG>boolfnames[];</STRONG>
<STRONG>NCURSES_CONST</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG> <STRONG>const</STRONG> <STRONG>boolnames[];</STRONG>
<STRONG>NCURSES_CONST</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG> <STRONG>const</STRONG> <STRONG>numcodes[];</STRONG>
<STRONG>NCURSES_CONST</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG> <STRONG>const</STRONG> <STRONG>numfnames[];</STRONG>
<STRONG>NCURSES_CONST</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG> <STRONG>const</STRONG> <STRONG>numnames[];</STRONG>
<STRONG>NCURSES_CONST</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG> <STRONG>const</STRONG> <STRONG>strcodes[];</STRONG>
<STRONG>NCURSES_CONST</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG> <STRONG>const</STRONG> <STRONG>strfnames[];</STRONG>
<STRONG>NCURSES_CONST</STRONG> <STRONG>char</STRONG> <STRONG>*</STRONG> <STRONG>const</STRONG> <STRONG>strnames[];</STRONG>
</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
This page summarizes variables provided by the <STRONG>curses</STRONG> library's low-
level terminfo interface. A more complete description is given in the
<STRONG><A HREF="curs_terminfo.3x.html">curs_terminfo(3x)</A></STRONG> manual page.
Depending on the configuration, these may be actual variables, or
macros (see <STRONG><A HREF="curs_threads.3x.html">curs_threads(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-on-
ly to avoid confusing the library.
</PRE><H3><a name="h3-Alternate-Character-Set-Mapping">Alternate Character Set Mapping</a></H3><PRE>
After initializing the curses or terminfo interfaces, the <STRONG>acs_map</STRONG> array
holds information used to translate cells with the <STRONG>A_ALTCHARSET</STRONG> video
attribute into line-drawing characters.
The encoding of the information in this array has changed periodically.
Application developers need only know that it is used for the "ACS_"
constants in <curses.h>.
The comparable data for the wide-character library is a private vari-
able.
</PRE><H3><a name="h3-Current-Terminal-Data">Current Terminal Data</a></H3><PRE>
After initializing the curses or terminfo interfaces, the <STRONG>cur_term</STRONG> con-
tains data describing the current terminal. This variable is also set
as a side-effect of <STRONG><A HREF="curs_initscr.3x.html">set_term(3x)</A></STRONG> and <STRONG><A HREF="curs_initscr.3x.html">delscreen(3x)</A></STRONG>.
It is possible to save a value of <STRONG>cur_term</STRONG> for subsequent use as a pa-
rameter to <STRONG>set_term</STRONG>, for switching between screens. Alternatively, one
can save the return value from <STRONG>newterm</STRONG> or <STRONG><A HREF="curs_terminfo.3x.html">setupterm(3x)</A></STRONG> to reuse in
<STRONG>set_term</STRONG>.
</PRE><H3><a name="h3-Terminfo-Names">Terminfo Names</a></H3><PRE>
The <STRONG><A HREF="tic.1m.html">tic(1)</A></STRONG> and <STRONG><A HREF="infocmp.1m.html">infocmp(1)</A></STRONG> programs use lookup tables for the long and
short names of terminfo capabilities, as well as the corresponding
names for termcap capabilities. These are available to other applica-
tions, although the hash-tables used by the terminfo and termcap func-
tions are not available.
The long terminfo capability names use a "l" (ell) in their names:
<STRONG>boolfnames</STRONG>, <STRONG>numfnames</STRONG>, and <STRONG>strfnames</STRONG>.
These are the short names for terminfo capabilities: <STRONG>boolnames</STRONG>, <STRONG>num-</STRONG>
<STRONG>names</STRONG>, and <STRONG>strnames</STRONG>.
These are the corresponding names used for termcap descriptions: <STRONG>bool-</STRONG>
<STRONG>codes</STRONG>, <STRONG>numcodes</STRONG>, and <STRONG>strcodes</STRONG>.
</PRE><H3><a name="h3-Terminal-Type">Terminal Type</a></H3><PRE>
A terminal description begins with one or more terminal names separated
by "|" (vertical bars). On initialization of the curses or terminfo
interfaces, <STRONG><A HREF="curs_terminfo.3x.html">setupterm(3x)</A></STRONG> copies the terminal names to the array <STRONG>tty-</STRONG>
<STRONG>type</STRONG>.
</PRE><H3><a name="h3-Terminfo-Names">Terminfo Names</a></H3><PRE>
In addition to the variables, <STRONG><term.h></STRONG> also defines a symbol for each
terminfo capability <EM>long</EM> <EM>name</EM>. These are in terms of the symbol <STRONG>CUR</STRONG>,
which is defined
#define CUR ((TERMTYPE *)(cur_term))->
These symbols provide a faster method of accessing terminfo capabili-
ties than using <STRONG><A HREF="curs_terminfo.3x.html">tigetstr(3x)</A></STRONG>, etc.
The actual definition of <STRONG>CUR</STRONG> depends upon the implementation, but each
terminfo library provides these long names defined to point into the
current terminal description loaded into memory.
</PRE><H2><a name="h2-NOTES">NOTES</a></H2><PRE>
The low-level terminfo interface is initialized using <STRONG><A HREF="curs_terminfo.3x.html">setupterm(3x)</A></STRONG>.
The upper-level curses interface uses the low-level terminfo interface,
internally.
</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
X/Open Curses does not describe any of these except for <STRONG>cur_term</STRONG>. (The
inclusion of <STRONG>cur_term</STRONG> appears to be an oversight, since other compara-
ble low-level information is omitted by X/Open).
Other implementations may have comparable variables. Some implementa-
tions provide the variables in their libraries, but omit them from the
header files.
All implementations which provide terminfo interfaces add definitions
as described in the <STRONG>Terminfo</STRONG> <STRONG>Names</STRONG> section. Most, but not all, base
the definition upon the <STRONG>cur_term</STRONG> variable.
</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_terminfo.3x.html">curs_terminfo(3x)</A></STRONG>, <STRONG><A HREF="curs_threads.3x.html">curs_threads(3x)</A></STRONG>, <STRONG><A HREF="terminfo.5.html">terminfo(5)</A></STRONG>.
<STRONG><A HREF="term_variables.3x.html">term_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-Alternate-Character-Set-Mapping">Alternate Character Set Mapping</a></li>
<li><a href="#h3-Current-Terminal-Data">Current Terminal Data</a></li>
<li><a href="#h3-Terminfo-Names">Terminfo Names</a></li>
<li><a href="#h3-Terminal-Type">Terminal Type</a></li>
<li><a href="#h3-Terminfo-Names">Terminfo Names</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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