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legacy_coding 3x

legacy_coding(3x)                                            legacy_coding(3x)




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 char-
                   acters 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(3x)