https://invisible-island.net/ncurses/man/
curs_in_wchstr(3x) Library calls curs_in_wchstr(3x)
in_wchstr, in_wchnstr, win_wchstr, win_wchnstr, mvin_wchstr,
mvin_wchnstr, mvwin_wchstr, mvwin_wchnstr - get a curses complex
character string from a window
#include <curses.h>
int in_wchstr(cchar_t *wchstr);
int win_wchstr(WINDOW *win, cchar_t *wchstr);
int mvin_wchstr(int y, int x, cchar_t *wchstr);
int mvwin_wchstr(WINDOW *win, int y, int x, cchar_t *wchstr);
int in_wchnstr(cchar_t *wchstr, int n);
int win_wchnstr(WINDOW *win, cchar_t *wchstr, int n);
int mvin_wchnstr(int y, int x, cchar_t *wchstr, int n);
int mvwin_wchnstr(WINDOW *win, int y, int x, cchar_t *wchstr, int n);
These functions return an array of complex characters in wchstr,
starting at the current cursor position in the named window.
Attributes (rendition) are stored with the characters.
The four functions with n as the last argument return a leading
substring at most n characters long (exclusive of the trailing zeroed
cchar_t. Transfer stops at the end of the current line, or when n
characters have been stored at the location referenced by wchstr.
Constants defined in <curses.h> can be used with the & (logical AND)
operator to extract the character or the attribute alone from any
position in the wchstr [see getcchar(3x)].
Upon successful completion, these functions return OK. Otherwise, they
return ERR.
X/Open Curses defines no error conditions. This implementation returns
ERR
o if the win parameter is null or
o if the wchstr parameter is null.
Functions prefixed with "mv" first perform cursor movement and fail if
the position (y, x) is outside the window boundaries.
All routines except win_wchnstr may be macros.
Reading a line that overflows the array pointed to by wchstr with
in_wchstr, mvin_wchstr, mvwin_wchstr or win_wchstr causes undefined
results. Therefore, the use of in_wchnstr, mvin_wchnstr,
mvwin_wchnstr, or win_wchnstr is recommended.
X/Open Curses defines no error conditions. This implementation checks
for null pointers, returning ERR in that case.
curs_inchstr(3x) describes comparable functions of the ncurses library
in its non-wide-character configuration.
curses(3x), curs_inwstr(3x), curs_in_wch(3x)
ncurses 6.5 2024-05-25 curs_in_wchstr(3x)