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* Author: Thomas E. Dickey
* @Id: legacy_coding.3x,v 1.3 2006/12/24 15:12:55 tom Exp @
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<H1>legacy_coding 3x</H1>
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<PRE>
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<STRONG><A HREF="legacy_coding.3x.html">legacy_coding(3x)</A></STRONG> <STRONG><A HREF="legacy_coding.3x.html">legacy_coding(3x)</A></STRONG>
</PRE>
<H2>NAME</H2><PRE>
<STRONG>use_legacy_coding</STRONG> - use terminal's default colors
</PRE>
<H2>SYNOPSIS</H2><PRE>
<STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
<STRONG>int</STRONG> <STRONG>use_legacy_coding(int</STRONG> <STRONG>level);</STRONG>
</PRE>
<H2>DESCRIPTION</H2><PRE>
The <EM>use</EM><STRONG>_</STRONG><EM>legacy</EM><STRONG>_</STRONG><EM>coding()</EM> function is an extension to the
curses library. It allows the caller to change the result
of <STRONG>unctrl</STRONG>, and suppress related checks within the library
that would normally cause nonprinting characters to be
rendered in visible form. This affects only 8-bit charac-
ters.
The <EM>level</EM> parameter controls the result:
0 the library functions normally, rendering non-
printing characters as described in <STRONG>unctrl</STRONG>.
1 the library ignores <STRONG>isprintf</STRONG> for codes in the
range 160-255.
2 the library ignores <STRONG>isprintf</STRONG> for codes in the
range 128-255. It also modifies the output of
<STRONG>unctrl</STRONG>, showing codes in the range 128-159 as
is.
</PRE>
<H2>RETURN VALUE</H2><PRE>
If the screen has not been initialized, or the <EM>level</EM>
parameter is out of range, the function returns <STRONG>ERR</STRONG>. Oth-
erwise, it returns the previous level: <STRONG>0</STRONG>, <STRONG>1</STRONG> or <STRONG>2</STRONG>.
</PRE>
<H2>PORTABILITY</H2><PRE>
This routine is specific to ncurses. It was not supported
on Version 7, BSD or System V implementations. It is rec-
ommended that any code depending on ncurses extensions be
conditioned using NCURSES_VERSION.
</PRE>
<H2>SEE ALSO</H2><PRE>
<STRONG>unctrl</STRONG>.
</PRE>
<H2>AUTHOR</H2><PRE>
Thomas Dickey (to support lynx's font-switching feature).
<STRONG><A HREF="legacy_coding.3x.html">legacy_coding(3x)</A></STRONG>
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