X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=man%2Fcurs_getyx.3x;h=e6ff67014864f15d27039d28ef6b264ca7cb16c6;hp=1e1a6eff1f32aaaf060f18daee088607d53e4c6c;hb=42259b594b5dabd37fe2bc294051d2db82e873a2;hpb=a8987e73ec254703634802b4f7ee30d3a485524d

diff --git a/man/curs_getyx.3x b/man/curs_getyx.3x
index 1e1a6eff..e6ff6701 100644
--- a/man/curs_getyx.3x
+++ b/man/curs_getyx.3x
@@ -1,5 +1,6 @@
 .\"***************************************************************************
-.\" Copyright (c) 1998-2002,2003 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            *
@@ -26,33 +27,33 @@
 .\" authorization.                                                           *
 .\"***************************************************************************
 .\"
-.\" $Id: curs_getyx.3x,v 1.10 2003/05/10 20:33:49 jmc Exp $
+.\" $Id: curs_getyx.3x,v 1.20 2020/10/24 09:38:43 tom Exp $
 .TH curs_getyx 3X ""
 .SH NAME
 \fBgetyx\fR,
 \fBgetparyx\fR,
 \fBgetbegyx\fR,
-\fBgetmaxyx\fR - get \fBcurses\fR cursor and window coordinates
+\fBgetmaxyx\fR \- get \fBcurses\fR cursor and window coordinates
 .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
-\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
-\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
-\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.
-
+.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
 variables \fIy\fR and \fIx\fR.
-Otherwise, \fB-1\fR is placed into \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
@@ -67,9 +68,9 @@ The
 \fBgetparyx\fR,
 \fBgetbegyx\fR and
 \fBgetmaxyx\fR
-functions are described in the XSI Curses standard, Issue 4.
+macros are described in the XSI Curses standard, Issue 4.
 .PP
-This implementation also provides
+This implementation also provides functions
 \fBgetbegx\fR,
 \fBgetbegy\fR,
 \fBgetcurx\fR,
@@ -79,11 +80,22 @@ This implementation also provides
 \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
-\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)