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:
· 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_pairsetcchar
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
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 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
characters referenced by wcval, including one for a trailing null.
When wch is not a null pointer, getcchar returns OK upon successful
completion, and ERR otherwise.
Upon successful completion, setcchar returns OK. Otherwise, it
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