getcchar, setcchar - Get a wide character string and ren-
dition from a cchar_t or set a cchar_t from a wide-charac-
const cchar_t *wcval,
void *opts );
const wchar_t *wch,
const attr_t attrs,
void *opts );
The getcchar function gets a wide-character string and
rendition from a cchar_t argument. When wch is not a null
pointer, the getcchar function does the following:
o Extracts information from a cchar_t value wcval
o Stores the character attributes in the location
pointed to by attrs
o Stores the color-pair in the location pointed to by
o Stores the wide-character string, characters refer-
enced by wcval, into the array pointed to by wch.
When wch is a null pointer, the getcchar function does the
o Obtains the number of wide characters pointed to by
o Does not change the data referenced by attrs or
The setcchar function initializes the location pointed to
by wcval by using:
o The character attributes in attrs
o The color pair in color_pair
o The wide-character string pointed to by wch. The
string must be L'\0' terminated, contain at most one
spacing character, which must be the first.
Up to CCHARW_MAX-1 nonspacing characters may follow.
Additional nonspacing characters are ignored.
The string may contain a single control character
instead. In that case, no nonspacing characters are
The opts argument is reserved for future use. Currently,
an application must provide a null pointer as opts.
The wcval argument may be a value generated by a call to
setcchar or by a function that has a cchar_t output argu-
ment. If wcval is constructed by any other means, the
effect is unspecified.
When wch is a null pointer, getcchar returns the number of
wide characters referenced by wcval, including one for a
When wch is not a null pointer, getcchar returns OK upon
successful completion, and ERR otherwise.
Upon successful completion, setcchar returns OK. Other-
wise, it returns ERR.
Functions: curs_attr(3x), curs_color(3x), curses(3x),