Provided by: ncurses-doc_6.1+20181013-2ubuntu2_all bug

NAME

       use_legacy_coding - override locale-encoding checks

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 characters.

       The level parameter controls the result:

              0    the library functions normally, rendering nonprinting characters as  described
                   in unctrl.

              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.  Otherwise, 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 recommended 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(3NCURSES)