ncurses 6.0 - patch 20170826

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

diff --git a/man/curs_getcchar.3x b/man/curs_getcchar.3x
index 4c5b2291187373df3bed69229e3a1883b3ba4303..a106a2230c45eb8b0d785edb645255f69ad057cb 100644 (file)
--- a/man/curs_getcchar.3x
+++ b/man/curs_getcchar.3x
@@ -1,5 +1,5 @@
 .\"***************************************************************************
-.\" Copyright (c) 2001-2012,2015 Free Software Foundation, Inc.              *
+.\" Copyright (c) 2001-2015,2017 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            *
@@ -26,7 +26,7 @@
 .\" authorization.                                                           *
 .\"***************************************************************************
 .\"
-.\" $Id: curs_getcchar.3x,v 1.17 2015/07/21 09:30:38 tom Exp $
+.\" $Id: curs_getcchar.3x,v 1.18 2017/03/31 10:50:54 tom Exp $
 .TH curs_getcchar 3X ""
 .de bP
 .IP \(bu 4
@@ -110,10 +110,23 @@ Additional nonspacing characters are ignored.
 .IP
 The string may contain a single control character instead.
 In that case, no nonspacing characters are allowed.
-.SH NOTES
+.SH EXTENSIONS
 .PP
-The \fIopts\fP argument is reserved for future use.
-Currently, an application must provide a null pointer as \fIopts\fP.
+X/Open Curses documents the \fIopts\fP argument as reserved for future use,
+saying that it must be null.
+This implementation 
+uses that parameter in ABI 6 for the functions which have a color-pair
+parameter to support extended color pairs:
+.bP
+For  functions  which modify the color, e.g., \fBsetcchar\fP,
+if \fIopts\fP is set it is treated as a pointer to \fBint\fP,
+and used to  set  the  color pair instead of the \fBshort\fP pair parameter.
+.bP
+For functions which retrieve the color, e.g., \fBgetcchar\fP,
+if \fIopts\fP is set it is treated as a pointer to \fBint\fP,
+and  used  to  retrieve  the color pair as an \fBint\fP value,
+in addition retrieving it via the standard pointer to \fBshort\fP parameter.
+.SH NOTES
 .PP
 The \fIwcval\fP argument may be a value generated by a call to
 \fBsetcchar\fP or by a function that has a \fBcchar_t\fP output argument.