# curs_addchstr 3x 2025-08-16 ncurses 6.5 Library calls

    curs_addchstr(3x)                Library calls               curs_addchstr(3x)

## NAME

           addchstr,  waddchstr,  mvaddchstr,  mvwaddchstr, addchnstr, waddchnstr,
           mvaddchnstr, mvwaddchnstr - add a curses character string to a window

## SYNOPSIS

           #include <curses.h>

           int addchstr(const chtype * chstr);
           int waddchstr(WINDOW * win, const chtype * chstr);
           int mvaddchstr(int y, int x, const chtype * chstr);
           int mvwaddchstr(WINDOW * win, int y, int x,
                 const chtype * chstr);

           int addchnstr(const chtype * chstr, int n);
           int waddchnstr(WINDOW * win, const chtype * chstr, int n);
           int mvaddchnstr(int y, int x, const chtype * chstr, int n);
           int mvwaddchnstr(WINDOW * win, int y, int x,
                 const chtype * chstr, int n);

## DESCRIPTION

           waddchstr copies the string of curses characters chstr  to  the  window
           win.   A  null curses character terminates the string.  waddchnstr does
           the same, but copies at most n characters, or as many as possible if  n
           is -1.  ncurses(3x) describes the variants of these functions.

           Because  these  functions  do  not call waddch(3x) internally, they are
           faster than waddstr(3x) and waddnstr(3x).  On the other hand, they

           o   do  not  treat  the  backspace,  carriage  return,  or  line   feed
               characters specially;

           o   do not represent unprintable characters with unctrl(3x);

           o   do  not  update  the  cursor  position to follow the last character
               written; and

           o   truncate the string at  the  window's  right  margin,  rather  than
               wrapping it to the next line and potentially scrolling.

## RETURN VALUE

           These functions return OK on success and ERR on failure.

           In ncurses, these functions fail if

           o   the curses screen has not been initialized,

           o   chstr is a null pointer, or

           o   (for  functions  taking  a  WINDOW  pointer argument) win is a null
               pointer.

           Functions prefixed with "mv" first perform cursor movement and fail  if
           the position (y, x) is outside the window boundaries.

## NOTES

           All of these functions except waddchnstr may be implemented as macros.

## PORTABILITY

           X/Open Curses Issue 4 describes these functions.  It specifies no error
           conditions for them.

           SVr4 describes a successful return value  only  as  "an  integer  value
           other than ERR".

## HISTORY

           SVr3.1 (1987) introduced these functions.

## SEE ALSO

           curs_add_wchstr(3x)  describes  comparable  functions  of  the  ncurses
           library in its wide-character configuration (ncursesw).

           curses(3x), curs_addch(3x), curs_addstr(3x)

    ncurses 6.5                       2025-08-16                 curs_addchstr(3x)