ncurses 6.2 - patch 20210109

[ncurses.git] / man / curs_getyx.3x

diff --git a/man/curs_getyx.3x b/man/curs_getyx.3x
index 820bf99c5327890f69a945a94dc47f9e098346a0..e6ff67014864f15d27039d28ef6b264ca7cb16c6 100644 (file)
--- a/man/curs_getyx.3x
+++ b/man/curs_getyx.3x
@@ -1,5 +1,6 @@
 .\"***************************************************************************
 .\"***************************************************************************

-.\" Copyright (c) 1998 Free Software Foundation, Inc.                        *
+.\" Copyright 2020 Thomas E. Dickey                                          *
+.\" Copyright 1998-2007,2010 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            *
 .\"                                                                          *
 .\" Permission is hereby granted, free of charge, to any person obtaining a  *
 .\" copy of this software and associated documentation files (the            *


@@ -26,47 +27,75 @@
 .\" authorization.                                                           *
 .\"***************************************************************************
 .\"
 .\" authorization.                                                           *
 .\"***************************************************************************
 .\"

-.\" $Id: curs_getyx.3x,v 1.6 1998/03/11 21:12:53 juergen Exp $
+.\" $Id: curs_getyx.3x,v 1.20 2020/10/24 09:38:43 tom Exp $

 .TH curs_getyx 3X ""
 .SH NAME
 .TH curs_getyx 3X ""
 .SH NAME

-\fBgetyx\fR, \fBgetparyx\fR, \fBgetbegyx\fR,
-\fBgetmaxyx\fR - get \fBcurses\fR cursor and window coordinates
+\fBgetyx\fR,
+\fBgetparyx\fR,
+\fBgetbegyx\fR,
+\fBgetmaxyx\fR \- get \fBcurses\fR cursor and window coordinates

 .SH SYNOPSIS
 \fB#include <curses.h>\fR
 .SH SYNOPSIS
 \fB#include <curses.h>\fR

-
-\fBvoid getyx(WINDOW *win, int y, int x);\fR
+.sp
+\fBvoid getyx(WINDOW *\fP\fIwin\fP\fB, int \fP\fIy\fP\fB, int \fP\fIx\fP\fB);\fR

 .br
 .br

-\fBvoid getparyx(WINDOW *win, int y, int x);\fR
+\fBvoid getparyx(WINDOW *\fP\fIwin\fP\fB, int \fP\fIy\fP\fB, int \fP\fIx\fP\fB);\fR

 .br
 .br

-\fBvoid getbegyx(WINDOW *win, int y, int x);\fR
+\fBvoid getbegyx(WINDOW *\fP\fIwin\fP\fB, int \fP\fIy\fP\fB, int \fP\fIx\fP\fB);\fR

 .br
 .br

-\fBvoid getmaxyx(WINDOW *win, int y, int x);\fR
+\fBvoid getmaxyx(WINDOW *\fP\fIwin\fP\fB, int \fP\fIy\fP\fB, int \fP\fIx\fP\fB);\fR

 .br
 .SH DESCRIPTION
 The \fBgetyx\fR macro places the current cursor position of the given window in
 the two integer variables \fIy\fR and \fIx\fR.
 .br
 .SH DESCRIPTION
 The \fBgetyx\fR macro places the current cursor position of the given window in
 the two integer variables \fIy\fR and \fIx\fR.

-
+.PP

 If \fIwin\fR is a subwindow, the \fBgetparyx\fR macro places the beginning
 coordinates of the subwindow relative to the parent window into two integer
 If \fIwin\fR is a subwindow, the \fBgetparyx\fR macro places the beginning
 coordinates of the subwindow relative to the parent window into two integer

-variables \fIy\fR and \fIx\fR.  Otherwise, \fB-1\fR is placed into \fIy\fR and
-\fIx\fR.
-
+variables \fIy\fR and \fIx\fR.
+Otherwise, \fB\-1\fR is placed into \fIy\fR and \fIx\fR.
+.PP

 Like \fBgetyx\fR, the \fBgetbegyx\fR and \fBgetmaxyx\fR macros store
 the current beginning coordinates and size of the specified window.
 .SH RETURN VALUE
 Like \fBgetyx\fR, the \fBgetbegyx\fR and \fBgetmaxyx\fR macros store
 the current beginning coordinates and size of the specified window.
 .SH RETURN VALUE

-The return values of these macros are undefined (\fIi\fR.\fIe\fR.,
-they should not be used as the right-hand side of assignment
-statements).
+The return values of these macros are undefined (i.e.,
+they should not be used as the right-hand side of assignment statements).

 .SH NOTES
 .SH NOTES

-All of these interfaces are macros and that "\fB&\fR" is not
-necessary before the variables \fIy\fR and \fIx\fR.
+All of these interfaces are macros.
+A "\fB&\fR" is not necessary before the variables \fIy\fR and \fIx\fR.

 .SH PORTABILITY
 .SH PORTABILITY

-These functions are described in the XSI Curses standard, Issue 4.
+The
+\fBgetyx\fR,
+\fBgetparyx\fR,
+\fBgetbegyx\fR and
+\fBgetmaxyx\fR
+macros are described in the XSI Curses standard, Issue 4.
+.PP
+This implementation also provides functions
+\fBgetbegx\fR,
+\fBgetbegy\fR,
+\fBgetcurx\fR,
+\fBgetcury\fR,
+\fBgetmaxx\fR,
+\fBgetmaxy\fR,
+\fBgetparx\fR and
+\fBgetpary\fR
+for compatibility with older versions of curses.
+.PP
+Although X/Open Curses does not address this,
+many implementations provide members of the WINDOW structure
+containing values corresponding to these macros.
+For best portability, do not rely on using the data in WINDOW,
+since some implementations make WINDOW opaque (do not allow
+direct use of its members).
+.PP
+Besides the problem of opaque structures,
+the data stored in like-named members may not have like-values in
+different implementations.
+For example, the WINDOW._maxx and WINDOW._maxy values in ncurses
+have (at least since release 1.8.1) differed by one from some
+other implementations.
+The difference is hidden by means of the macro \fBgetmaxyx\fP.

 .SH SEE ALSO
 .SH SEE ALSO

-\fBcurses\fR(3X)
-.\"#
-.\"# The following sets edit modes for GNU EMACS
-.\"# Local Variables:
-.\"# mode:nroff
-.\"# fill-column:79
-.\"# End:
+\fBcurses\fR(3X),
+\fBcurs_legacy\fR(3X),
+\fBcurs_opaque\fR(3X)