getcchar, setcchar - Get a wide character string and rendition from a
cchar_t or set a cchar_t from a wide-character string
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 func‐
tion does the following:
- Extracts information from a cchar_t value wcval
- Stores the character attributes in the location pointed to by
- Stores the color-pair in the location pointed to by color_pair
- Stores the wide-character string, characters referenced by wcval,
into the array pointed to by wch.
When wch is a null pointer, the getcchar function does the following:
- Obtains the number of wide characters pointed to by wcval
- Does not change the data referenced by attrs or color_pair
The setcchar function initializes the location pointed to by wcval by
- The character attributes in attrs
- The color pair in color_pair
- 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 allowed.
The opts argument is reserved for future use. Currently, an applica‐
tion 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 argument. If wcval is constructed
by any other means, the effect is unspecified.
When wch is a null pointer, getcchar returns the number of wide charac‐
ters referenced by wcval.
When wch is not a null pointer, getcchar returns OK upon successful
completion, and ERR otherwise.
Upon successful completion, setcchar returns OK. Otherwise, it returns
Functions: curs_attr(3X), curs_color(3X), curses(3X), wcwidth(3).