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.\"***************************************************************************
.\" Copyright 2018-2023,2024 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_insch.3x,v 1.40 2024/04/20 19:03:47 tom Exp $
.TH insch 3NCURSES 2024-04-20 "ncurses 6.5" "Library calls"
.ie \n(.g \{\
.ds `` \(lq
.ds '' \(rq
.\}
.el \{\
.ie t .ds `` ``
.el .ds `` ""
.ie t .ds '' ''
.el .ds '' ""
.\}
.SH NAME
\fB\%insch\fP,
\fB\%winsch\fP,
\fB\%mvinsch\fP,
\fB\%mvwinsch\fP \-
insert a \fIcurses\fP character in a window
.SH SYNOPSIS
.nf
\fB#include <curses.h>\fP
.PP
\fBint insch(chtype \fIch\fP);
\fBint winsch(WINDOW *\fIwin\fP, chtype \fIch\fP);
\fBint mvinsch(int \fIy\fP, int \fIx\fP, chtype \fIch\fP);
\fBint mvwinsch(WINDOW *\fIwin\fP, int \fIy\fP, int \fIx\fP, chtype \fIch\fP);
.fi
.SH DESCRIPTION
These functions insert the
.I curses
character
.I ch
at the cursor in the specified window
.I win
(or
.BR \%stdscr ).
The character previously at the cursor and any to its right move one
cell to the right;
the rightmost character on the line is discarded.
The cursor does not advance.
.SH "RETURN VALUE"
These functions return
.B OK
on success and
.B ERR
on failure.
.PP
Functions taking a
.I \%WINDOW
pointer argument fail if the pointer is
.BR NULL .
.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
.BR \%insch ,
.BR \%mvinsch ,
and
.B \%mvwinsch
may be implemented as macros.
.PP
A terminal's
.B \%insert_character
.RB ( ich1 )
capability
is not necessarily employed.
.SH PORTABILITY
X/Open Curses,
Issue 4 describes these functions.
.PP
SVr4
.I curses
describes a successful return value only as
\*(``an integer value other than
.BR ERR \*(''.
.SH "SEE ALSO"
\fB\%ins_wch\fP(3NCURSES) describes comparable functions in the
wide-character
.I curses
configuration.
.PP
\fB\%ncurses\fP(3NCURSES),
\fB\%terminfo\fP(5)
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