path: root/contrib/ncurses/man/curs_overlay.3x
diff options
Diffstat (limited to 'contrib/ncurses/man/curs_overlay.3x')
1 files changed, 16 insertions, 5 deletions
diff --git a/contrib/ncurses/man/curs_overlay.3x b/contrib/ncurses/man/curs_overlay.3x
index f17b375c3982..066c3a4a50f6 100644
--- a/contrib/ncurses/man/curs_overlay.3x
+++ b/contrib/ncurses/man/curs_overlay.3x
@@ -1,5 +1,5 @@
-.\" Copyright (c) 1998,2000,2001 Free Software Foundation, Inc. *
+.\" Copyright (c) 1998-2005,2006 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 *
@@ -26,20 +26,24 @@
.\" authorization. *
-.\" $Id: curs_overlay.3x,v 1.10 2001/11/03 19:58:30 tom Exp $
+.\" $Id: curs_overlay.3x,v 1.14 2006/02/25 21:49:19 tom Exp $
.TH curs_overlay 3X ""
+.hy 0
\fBcopywin\fR - overlay and manipulate overlapped \fBcurses\fR windows
\fB#include <curses.h>\fR
\fBint overlay(const WINDOW *srcwin, WINDOW *dstwin);\fR
\fBint overwrite(const WINDOW *srcwin, WINDOW *dstwin);\fR
-\fBint copywin(WINDOW *srcwin, WINDOW *dstwin, int sminrow,\fR
+\fBint copywin(const WINDOW *srcwin, WINDOW *dstwin, int sminrow,\fR
\fBint smincol, int dminrow, int dmincol, int dmaxrow,\fR
\fBint dmaxcol, int overlay);\fR
@@ -48,7 +52,7 @@ top of \fIdstwin\fR. \fIscrwin\fR and \fIdstwin\fR are not required
to be the same size; only text where the two windows overlap is
copied. The difference is that \fBoverlay\fR is non-destructive
(blanks are not copied) whereas \fBoverwrite\fR is destructive.
The \fBcopywin\fR routine provides a finer granularity of control over the
\fBoverlay\fR and \fBoverwrite\fR routines. Like in the \fBprefresh\fR
routine, a rectangle is specified in the destination window, (\fIdminrow\fR,
@@ -60,6 +64,13 @@ argument \fIoverlay\fR is \fBtrue\fR, then copying is non-destructive, as in
Routines that return an integer return \fBERR\fR upon failure, and \fBOK\fR
(SVr4 only specifies "an integer value other than \fBERR\fR") upon successful
+X/Open defines no error conditions.
+In this implementation,
+\fBoverlay\fP and \fBoverwrite\fP return an error
+if either of the window pointers are null, or
+if some part of the window would be placed off-screen.
Note that \fBoverlay\fR and \fBoverwrite\fR may be macros.