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29 * Author: Thomas E. Dickey
30 * @Id: legacy_coding.3x,v 1.4 2010/12/04 18:49:20 tom Exp @
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42 <H1 class="no-header">legacy_coding 3x</H1>
44 <STRONG><A HREF="legacy_coding.3x.html">legacy_coding(3x)</A></STRONG> <STRONG><A HREF="legacy_coding.3x.html">legacy_coding(3x)</A></STRONG>
50 <H2><a name="h2-NAME">NAME</a></H2><PRE>
51 <STRONG>use_legacy_coding</STRONG> - use terminal's default colors
55 <H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
56 <STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
58 <STRONG>int</STRONG> <STRONG>use_legacy_coding(int</STRONG> <STRONG>level);</STRONG>
62 <H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
63 The <EM>use</EM><STRONG>_</STRONG><EM>legacy</EM><STRONG>_</STRONG><EM>coding()</EM> function is an extension to the
64 curses library. It allows the caller to change the result
65 of <STRONG>unctrl</STRONG>, and suppress related checks within the library
66 that would normally cause nonprinting characters to be
67 rendered in visible form. This affects only 8-bit charac-
70 The <EM>level</EM> parameter controls the result:
72 0 the library functions normally, rendering non-
73 printing characters as described in <STRONG>unctrl</STRONG>.
75 1 the library ignores <STRONG>isprintf</STRONG> for codes in the
78 2 the library ignores <STRONG>isprintf</STRONG> for codes in the
79 range 128-255. It also modifies the output of
80 <STRONG>unctrl</STRONG>, showing codes in the range 128-159 as
85 <H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
86 If the screen has not been initialized, or the <EM>level</EM>
87 parameter is out of range, the function returns <STRONG>ERR</STRONG>. Oth-
88 erwise, it returns the previous level: <STRONG>0</STRONG>, <STRONG>1</STRONG> or <STRONG>2</STRONG>.
92 <H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
93 This routine is specific to ncurses. It was not supported
94 on Version 7, BSD or System V implementations. It is rec-
95 ommended that any code depending on ncurses extensions be
96 conditioned using NCURSES_VERSION.
100 <H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
101 <STRONG>unctrl</STRONG>.
105 <H2><a name="h2-AUTHOR">AUTHOR</a></H2><PRE>
106 Thomas Dickey (to support lynx's font-switching feature).
110 <STRONG><A HREF="legacy_coding.3x.html">legacy_coding(3x)</A></STRONG>
114 <li><a href="#h2-NAME">NAME</a></li>
115 <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
116 <li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
117 <li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
118 <li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
119 <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
120 <li><a href="#h2-AUTHOR">AUTHOR</a></li>