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29 * Author: Thomas E. Dickey
30 * @Id: legacy_coding.3x,v 1.6 2017/03/15 08:14:25 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>
49 </PRE><H2><a name="h2-NAME">NAME</a></H2><PRE>
50 <STRONG>use_legacy_coding</STRONG> - override locale-encoding checks
53 </PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
54 <STRONG>#include</STRONG> <STRONG><curses.h></STRONG>
56 <STRONG>int</STRONG> <STRONG>use_legacy_coding(int</STRONG> <STRONG>level);</STRONG>
59 </PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
60 The <STRONG>use_legacy_coding</STRONG> function is an extension to the curses library.
61 It allows the caller to change the result of <STRONG>unctrl</STRONG>, and suppress
62 related checks within the library that would normally cause nonprinting
63 characters to be rendered in visible form. This affects only 8-bit
66 The <EM>level</EM> parameter controls the result:
68 0 the library functions normally, rendering nonprinting char-
69 acters as described in <STRONG>unctrl</STRONG>.
71 1 the library ignores <STRONG>isprintf</STRONG> for codes in the range
74 2 the library ignores <STRONG>isprintf</STRONG> for codes in the range
75 128-255. It also modifies the output of <STRONG>unctrl</STRONG>, showing
76 codes in the range 128-159 as is.
79 </PRE><H2><a name="h2-RETURN-VALUE">RETURN VALUE</a></H2><PRE>
80 If the screen has not been initialized, or the <EM>level</EM> parameter is out
81 of range, the function returns <STRONG>ERR</STRONG>. Otherwise, it returns the previous
82 level: <STRONG>0</STRONG>, <STRONG>1</STRONG> or <STRONG>2</STRONG>.
85 </PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
86 This routine is specific to ncurses. It was not supported on Version
87 7, BSD or System V implementations. It is recommended that any code
88 depending on ncurses extensions be conditioned using NCURSES_VERSION.
91 </PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
92 <STRONG>unctrl</STRONG>.
95 </PRE><H2><a name="h2-AUTHOR">AUTHOR</a></H2><PRE>
96 Thomas Dickey (to support lynx's font-switching feature).
100 <STRONG><A HREF="legacy_coding.3x.html">legacy_coding(3x)</A></STRONG>
104 <li><a href="#h2-NAME">NAME</a></li>
105 <li><a href="#h2-SYNOPSIS">SYNOPSIS</a></li>
106 <li><a href="#h2-DESCRIPTION">DESCRIPTION</a></li>
107 <li><a href="#h2-RETURN-VALUE">RETURN VALUE</a></li>
108 <li><a href="#h2-PORTABILITY">PORTABILITY</a></li>
109 <li><a href="#h2-SEE-ALSO">SEE ALSO</a></li>
110 <li><a href="#h2-AUTHOR">AUTHOR</a></li>