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.\" $Id: curs_addstr.3x,v 1.69 2025/03/15 20:41:04 tom Exp $
.TH curs_addstr 3X 2025-03-15 "ncurses 6.5" "Library calls"
.ie \n(.g \{\
.ds `` \(lq
.ds '' \(rq
.\}
.el \{\
.ie t .ds `` ``
.el   .ds `` ""
.ie t .ds '' ''
.el   .ds '' ""
.\}
.
.de bP
.ie n  .IP \(bu 4
.el    .IP \(bu 2
..
.SH NAME
\fB\%addstr\fP,
\fB\%waddstr\fP,
\fB\%mvaddstr\fP,
\fB\%mvwaddstr\fP,
\fB\%addnstr\fP,
\fB\%waddnstr\fP,
\fB\%mvaddnstr\fP,
\fB\%mvwaddnstr\fP \-
add a string to a \fIcurses\fR window and advance the cursor
.SH SYNOPSIS
.nf
\fB#include <curses.h>
.PP
\fBint addstr(const char * \fIstr\fP);
\fBint waddstr(WINDOW * \fIwin\fP, const char * \fIstr\fP);
\fBint mvaddstr(int \fIy\fP, int \fIx\fP, const char * \fIstr\fP);
\fBint mvwaddstr(WINDOW * \fIwin\fP, int \fIy\fP, int \fIx\fP, const char * \fIstr\fP);
.PP
\fBint addnstr(const char * \fIstr\fP, int \fIn\fP);
\fBint waddnstr(WINDOW * \fIwin\fP, const char * \fIstr\fP, int \fIn\fP);
\fBint mvaddnstr(int \fIy\fP, int \fIx\fP, const char * \fIstr\fP, int \fIn\fP);
\fBint mvwaddnstr(WINDOW * \fIwin\fP, int \fIy\fP, int \fIx\fP, const char * \fIstr\fP,
      int \fIn\fP);
.fi
.SH DESCRIPTION
.B \%waddstr
writes the characters of the (null-terminated) string
.I str
to the window
.IR win ,
as if by calling \fB\%waddch\fP(3X) for each
.I char
in
.IR str .
.B \%waddnstr
is similar,
but writes at most
.I n
characters.
If
.I n
is \-1,
.B \%waddnstr
writes the entire string.
\fB\%ncurses\fP(3X) describes the variants of these functions.
.SH RETURN VALUE
These functions return
.B OK
on success and
.B ERR
on failure.
.PP
In
.IR \%ncurses ","
these functions fail if
.bP
the
.I curses
screen has not been initialized,
.bP
.I str
is a null pointer,
.bP
(for functions taking a
.I \%WINDOW
pointer argument)
.I win
is a null pointer,
or
.bP
an internal \fB\%waddch\fP(3X) call returns
.BR ERR "."
.PP
Functions prefixed with \*(``mv\*('' first perform cursor movement and
fail if the position
.RI ( y ,
.IR x )
is outside the window boundaries.
.SH NOTES
All of these functions except
.B \%waddnstr
may be implemented as macros.
.SH PORTABILITY
X/Open Curses Issue\ 4 describes these functions.
It specifies no error conditions for them.
.PP
SVr4 describes a successful return value only as
\*(``an integer value other than
.IR ERR \*(''. \" Courier roman in source; SVID 4, vol. 3, p. 474
.SH HISTORY
4BSD (1980)
introduced
.I \%waddstr
along with its variants,
the latter defined as macros.
.PP
SVr3.1 (1987)
added
.I \%waddnstr
(and its variants)
redefining
.I \%waddstr
as a macro wrapping it.
.SH SEE ALSO
\fB\%curs_addwstr\fP(3X) describes comparable functions of the
.I \%ncurses
library in its wide-character configuration
.RI \%( ncursesw ).
.PP
\fB\%curses\fP(3X),
\fB\%curs_addch\fP(3X),
\fB\%curs_addchstr\fP(3X)