.\"***************************************************************************
-.\" Copyright (c) 2002-2012,2016 Free Software Foundation, Inc. *
+.\" Copyright 2018-2020,2021 Thomas E. Dickey *
+.\" Copyright 2002-2016,2017 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 *
.\" authorization. *
.\"***************************************************************************
.\"
-.\" $Id: curs_get_wch.3x,v 1.9 2016/05/15 01:12:50 tom Exp $
+.\" $Id: curs_get_wch.3x,v 1.15 2021/05/22 22:33:19 tom Exp $
.TH curs_get_wch 3X ""
.na
.hy 0
+.ie \n(.g .ds `` \(lq
+.el .ds `` ``
+.ie \n(.g .ds '' \(rq
+.el .ds '' ''
.de bP
-.IP \(bu 4
+.ie n .IP \(bu 4
+.el .IP \(bu 2
..
.SH NAME
\fBget_wch\fR,
\fBint mvget_wch(int \fR\fIy\fR\fB, int \fR\fIx\fR\fB, wint_t *\fR\fIwch\fR\fB);\fR
.br
\fBint mvwget_wch(WINDOW *\fR\fIwin\fR\fB, int \fR\fIy\fR\fB, int \fR\fIx\fR\fB, wint_t *\fR\fIwch\fR\fB);\fR
-.br
+.sp
\fBint unget_wch(const wchar_t \fR\fIwch\fR\fB);\fR
.SH DESCRIPTION
+.SS wget_wch
The
\fBget_wch\fR,
\fBwget_wch\fR,
of 8-bit characters.
Their names begin with \fBKEY_\fR.
.bP
-Other (user-defined) function keys which may be defined using \fBdefine_key\fP(3X)
-have no names, but also are expected to have values outside the range of
-8-bit characters.
-.PP
+Other (user-defined) function keys
+which may be defined using \fBdefine_key\fP(3X) have no names,
+but also are expected to have values outside the range of 8-bit characters.
+.SS unget_wch
The
\fBunget_wch\fR
function pushes the wide character
too many times without an intervening call to
\fBget_wch\fR,
the operation may fail.
+.PP
+Unlike \fBungetch\fP and \fBwgetch\fP,
+\fBunget_wch\fP cannot distinguish special characters
+returned by \fBwget_wch\fP from ordinary characters.
+An application can push special keys
+which it may read via \fBwget_wch\fP
+by checking for the \fBKEY_CODE_YES\fR result,
+and using \fBungetch\fP for those special keys.
.SH NOTES
The header file
\fB<curses.h>\fR
Otherwise, the function returns
\fBERR\fR.
.PP
-Functions with a "mv" prefix first perform a cursor movement using
+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 SEE ALSO