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.\" Copyright 2018-2022,2023 Thomas E. Dickey                                *
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.\" $Id: curs_insch.3x,v 1.36 2023/12/23 16:03:24 tom Exp $
.TH insch 3NCURSES 2023-12-23 "ncurses 6.4" "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\fR character in a window
.SH SYNOPSIS
.nf
\fB#include <ncursesw/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 \fBOK\fP on success and \fBERR\fP 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 using
\fB\%wmove\fP and fail if the position
.RI ( y ,
.IR x )
is outside the window.
.SH NOTES
A terminal's
.B \%insert_character
.RB ( ich1 )
capability
is not necessarily employed.
.PP
\fB\%insch\fP,
\fB\%mvinsch\fP,
and
\fB\%mvwinsch\fP
may be implemented as macros.
.SH PORTABILITY
X/Open Curses, Issue 4, describes these functions.
.PP
SVr4 describes successful return values only as
\*(``an integer value other than \fBERR\fP\*(''.
.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)