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.\"***************************************************************************
.\" Copyright 2018-2022,2023 Thomas E. Dickey *
.\" Copyright 1998-2010,2017 Free Software Foundation, Inc. *
.\" *
.\" Permission is hereby granted, free of charge, to any person obtaining a *
.\" copy of this software and associated documentation files (the *
.\" "Software"), to deal in the Software without restriction, including *
.\" without limitation the rights to use, copy, modify, merge, publish, *
.\" distribute, distribute with modifications, sublicense, and/or sell *
.\" copies of the Software, and to permit persons to whom the Software is *
.\" furnished to do so, subject to the following conditions: *
.\" *
.\" The above copyright notice and this permission notice shall be included *
.\" in all copies or substantial portions of the Software. *
.\" *
.\" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
.\" OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
.\" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
.\" IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
.\" DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
.\" OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
.\" THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
.\" *
.\" Except as contained in this notice, the name(s) of the above copyright *
.\" holders shall not be used in advertising or otherwise to promote the *
.\" sale, use or other dealings in this Software without prior written *
.\" authorization. *
.\"***************************************************************************
.\"
.\" $Id: curs_inchstr.3x,v 1.40 2023/11/19 00:08:58 tom Exp $
.TH inchstr 3NCURSES 2023-11-18 "ncurses 6.4" "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\%inchstr\fP,
\fB\%inchnstr\fP,
\fB\%winchstr\fP,
\fB\%winchnstr\fP,
\fB\%mvinchstr\fP,
\fB\%mvinchnstr\fP,
\fB\%mvwinchstr\fP,
\fB\%mvwinchnstr\fP \-
get a \fIcurses\fR character string from a window
.SH SYNOPSIS
.nf
\fB#include <curses.h>
.PP
\fBint inchstr(chtype *\fIchstr\fP);
\fBint inchnstr(chtype *\fIchstr\fP, int \fIn\fP);
\fBint winchstr(WINDOW *\fIwin\fP, chtype *\fIchstr\fP);
\fBint winchnstr(WINDOW *\fIwin\fP, chtype *\fIchstr\fP, int \fIn\fP);
.PP
\fBint mvinchstr(int \fIy\fP, int \fIx\fP, chtype *\fIchstr\fP);
\fBint mvinchnstr(int \fIy\fP, int \fIx\fP, chtype *\fIchstr\fP, int \fIn\fP);
\fBint mvwinchstr(WINDOW *\fIwin\fP, int \fIy\fP, int \fIx\fP, chtype *\fIchstr\fP);
\fBint mvwinchnstr(WINDOW *\fIwin\fP, int \fIy\fP, int \fIx\fP, chtype *\fIchstr\fP, int \fIn\fP);
.fi
.SH DESCRIPTION
These routines return a NULL-terminated array of \fBchtype\fP quantities,
starting at the current cursor position in the named window and ending at the
right margin of the window.
.PP
The four functions with \fIn\fP as the last argument, return
a leading substring at most \fIn\fP characters long
(exclusive of the trailing (chtype)0).
Transfer stops at the end of the current line, or when \fIn\fP characters have
been stored at the location referenced by \fIchstr\fP.
.PP
Constants defined in \fB<curses.h>\fP can be used with the \fB&\fP (logical
AND) operator to extract the character or the attribute alone from any position
in the \fIchstr\fP [see \fB\%inch\fP(3NCURSES)].
.SH RETURN VALUE
All routines return the integer \fBERR\fP upon failure and an integer value
other than \fBERR\fP upon successful completion (the number of characters
retrieved, exclusive of the trailing 0).
.PP
X/Open Curses defines no error conditions.
This implementation returns an error
.bP
if the \fIwin\fP parameter is null or
.bP
if the \fIchstr\fP parameter is null.
.PP
Functions with a \*(``mv\*('' prefix first perform a cursor movement using
\fBwmove\fP, and return an error if the position is outside the window,
or if the window pointer is null.
.SH NOTES
All routines except \fBwinchnstr\fP may be macros.
.PP
SVr4 does not
document whether the result string is zero-terminated; it does not document
whether a length limit argument includes any trailing 0; and it does not
document the meaning of the return value.
.PP
Reading a line that overflows the array pointed to by
\fIchstr\fP
with
\fBinchstr\fP,
\fBmvinchstr\fP,
\fBmvwinchstr\fP
or
\fBwinchstr\fP
causes undefined results.
Therefore, the use of
\fBinchnstr\fP,
\fBmvinchnstr\fP,
\fBmvwinchnstr\fP, or
\fBwinchnstr\fP
is recommended.
.SH PORTABILITY
These functions are described in the XSI Curses standard, Issue 4.
It is no
more specific than the SVr4 documentation on the trailing 0.
It does specify
that the successful return of the functions is \fBOK\fP.
.SH SEE ALSO
\fB\%ncurses\fP(3NCURSES),
\fB\%inch\fP(3NCURSES),
\fB\%inwstr\fP(3NCURSES),
\fB\%in_wchstr\fP(3NCURSES)
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