doc/html/man/legacy_coding.3x.html - master - githubmirror/ncurses

doc/html/man/legacy_coding.3x.html
115 строк6 KB
Thomas E. Dickey
ncurses 6.3 - patch 20220212
13 фев 2022, 05:28
13 фев 2022, 05:2816fbf3f
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<H1 class="no-header">legacy_coding 3x</H1>
<PRE>
<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><a name="h2-NAME">NAME</a></H2><PRE>
       <STRONG>use_legacy_coding</STRONG> - override locale-encoding checks


</PRE><H2><a name="h2-SYNOPSIS">SYNOPSIS</a></H2><PRE>
       <STRONG>#include</STRONG> <STRONG>&lt;curses.h&gt;</STRONG>

       <STRONG>int</STRONG> <STRONG>use_legacy_coding(int</STRONG> <EM>level</EM><STRONG>);</STRONG>


</PRE><H2><a name="h2-DESCRIPTION">DESCRIPTION</a></H2><PRE>
       The  <STRONG>use_legacy_coding</STRONG>  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
       characters.

       The <EM>level</EM> parameter controls the result:

              0    the   library  functions  normally,  rendering  nonprinting
                   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><a name="h2-RETURN-VALUE">RETURN VALUE</a></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>.  Otherwise, it returns the previous
       level: <STRONG>0</STRONG>, <STRONG>1</STRONG> or <STRONG>2</STRONG>.


</PRE><H2><a name="h2-PORTABILITY">PORTABILITY</a></H2><PRE>
       This  routine  is specific to ncurses.  It was not supported on Version
       7, BSD or System V implementations.  It is recommended  that  any  code
       depending on ncurses extensions be conditioned using NCURSES_VERSION.


</PRE><H2><a name="h2-SEE-ALSO">SEE ALSO</a></H2><PRE>
       <STRONG><A HREF="unctrl.3x.html">unctrl(3x)</A></STRONG>.


</PRE><H2><a name="h2-AUTHOR">AUTHOR</a></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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