getcchar (3ncurses)

#include <curses.h>

int getcchar(

const cchar_t *wcval,

wchar_t *wch,

attr_t *attrs,

short *color_pair,

void *opts );

int setcchar(

cchar_t *wcval,

const wchar_t *wch,

const attr_t attrs,

short color_pair,

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:

• Extracts information from a cchar_t value wcval Stores the character attributes in the location pointed to by attrs 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 using: 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 returns ERR.

Functions: attr(3NCURSES), color(3NCURSES), ncurses(3NCURSES), wcwidth(3).