addwstr(3NCURSES) Library calls addwstr(3NCURSES)
NAME
addwstr, waddwstr, mvaddwstr, mvwaddwstr, addnwstr, waddnwstr,
mvaddnwstr, mvwaddnwstr - add a wide-character string to a curses window
and advance the cursor
SYNOPSIS
#include <curses.h>
int addwstr(const wchar_t * wstr);
int waddwstr(WINDOW * win, const wchar_t * wstr);
int mvaddwstr(int y, int x, const wchar_t * wstr);
int mvwaddwstr(WINDOW * win, int y, int x,
const wchar_t * wstr);
int addnwstr(const wchar_t * wstr, int n);
int waddnwstr(WINDOW * win, const wchar_t * wstr, int n);
int mvaddnwstr(int y, int x, const wchar_t * wstr, int n);
int mvwaddnwstr(WINDOW * win, int y, int x,
const wchar_t * wstr, int n);
DESCRIPTION
waddwstr writes the characters of the (wide-null-terminated) wide-char-
acter string wstr to the window win, as if by constructing a cchar_t for
each wchar_t in wstr, then calling wadd_wch(3NCURSES) with the resulting
cchar_t. curses processes spacing and non-spacing characters in wstr
one at a time. waddnwstr is similar, but writes at most n wide charac-
ters. If n is -1, waddnwstr writes the entire wide string.
ncurses(3NCURSES) describes the variants of these functions.
RETURN VALUE
These functions return OK on success and ERR on failure.
In ncurses, they return ERR if
• win is NULL,
• wstr is NULL, or
• an internal wadd_wch(3NCURSES) call returns ERR.
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 waddnwstr may be implemented as macros.
PORTABILITY
X/Open Curses Issue 4 describes these functions.
SVr4 describes a successful return value only as “an integer value other
than ERR”.
HISTORY
X/Open Curses Issue 4 (1995) initially specified these functions. The
System V Interface Definition Version 4 of the same year specified func-
tions named waddwstr and waddnwstr (and the usual variants). These were
later additions to SVr4.x, not appearing in the first SVr4 (1989).
SEE ALSO
addstr(3NCURSES) describes comparable functions of the ncurses library
in its non-wide-character configuration.
ncurses(3NCURSES), add_wch(3NCURSES), add_wchstr(3NCURSES)
ncurses 6.5 2025-02-01 addwstr(3NCURSES)
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