legacy_coding(3NCURSES) legacy_coding(3NCURSES)
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 re-
lated 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(3X).
AUTHOR
Thomas Dickey (to support lynx's font-switching feature).
legacy_coding(3NCURSES)
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