legacy_coding 3x

legacy_coding(3x)                                     legacy_coding(3x)

NAME

       use_legacy_coding - use terminal's default colors

SYNOPSIS

       #include <curses.h>

       int use_legacy_coding(int level);

DESCRIPTION

       The  use_legacy_coding()  function  is an extension to the
       curses library.  It allows the caller to change the result
       of  unctrl, 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 level parameter controls the result:

              0    the library functions normally, rendering non-
                   printing   characters  as  described  in  unc-
                   trl(3x).

              1    the library ignores isprintf for codes in  the
                   range 160-255.

              2    the  library ignores isprintf for codes in the
                   range 128-255.  It also modifies the output of
                   unctrl,  showing codes in the range 128-159 as
                   is.

RETURN VALUE

       If the screen has  not  been  initialized,  or  the  level
       parameter is out of range, the function returns ERR.  Oth-
       erwise, it returns the previous level: 0, 1 or 2.

PORTABILITY

       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.

SEE ALSO

       unctrl.

AUTHOR

       Thomas  Dickey (to support lynx's font-switching feature).



                                                      legacy_coding(3x)