# curs_in_wchstr 3x 2023-11-18 ncurses 6.4 Library calls

    curs_in_wchstr(3x)               Library calls              curs_in_wchstr(3x)

## NAME

           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

## SYNOPSIS

           #include <curses.h>

           int in_wchstr(cchar_t *wchstr);
           int in_wchnstr(cchar_t *wchstr, int n);
           int win_wchstr(WINDOW *win, cchar_t *wchstr);
           int win_wchnstr(WINDOW *win, cchar_t *wchstr, int n);

           int mvin_wchstr(int y, int x, cchar_t *wchstr);
           int mvin_wchnstr(int y, int x, cchar_t *wchstr, int n);
           int mvwin_wchstr(WINDOW *win, int y, int x, cchar_t *wchstr);
           int mvwin_wchnstr(WINDOW *win, int y, int x, cchar_t *wchstr, int n);

## DESCRIPTION

           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)].

## RETURN VALUE

           Upon successful completion, these functions return OK.  Otherwise, they
           return ERR.

           X/Open Curses defines no error conditions.  This implementation returns
           an error

           o   if the win parameter is null or

           o   if the wchstr parameter is null.

           Functions with a "mv" prefix first  perform  a  cursor  movement  using
           wmove, and return an error if the position is outside the window, or if
           the window pointer is null.

## NOTES

           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.

## PORTABILITY

           The XSI Curses defines no error conditions.  This implementation checks
           for null pointers, returning ERR in that case.

## SEE ALSO

           curses(3x),    curs_inchstr(3x),    curs_instr(3x),    curs_inwstr(3x),
           curs_in_wch(3x)

    ncurses 6.4                       2023-11-18                curs_in_wchstr(3x)