path: root/contrib/ncurses/man/curs_scroll.3x
diff options
authorRong-En Fan <rafan@FreeBSD.org>2007-01-20 07:32:02 +0000
committerRong-En Fan <rafan@FreeBSD.org>2007-01-20 07:32:02 +0000
commit4a1a95108dd76c4259fe6c37c4471f7969b17983 (patch)
tree1c6c3b549401156e1dbd96b9a6b18521f63ffb58 /contrib/ncurses/man/curs_scroll.3x
parent555c9cae3cf9146482732c28c06a73314b618149 (diff)
Import ncurses 5.6-20061217 onto the vender branch
Approved by: delphij
Notes: svn path=/vendor/ncurses/dist/; revision=166124
Diffstat (limited to 'contrib/ncurses/man/curs_scroll.3x')
1 files changed, 22 insertions, 10 deletions
diff --git a/contrib/ncurses/man/curs_scroll.3x b/contrib/ncurses/man/curs_scroll.3x
index f957ac96db7c..754b71499841 100644
--- a/contrib/ncurses/man/curs_scroll.3x
+++ b/contrib/ncurses/man/curs_scroll.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 *
@@ -26,13 +26,19 @@
.\" authorization. *
-.\" $Id: curs_scroll.3x,v 1.9 2001/10/14 00:51:56 tom Exp $
+.\" $Id: curs_scroll.3x,v 1.13 2006/02/25 21:49:19 tom Exp $
.TH curs_scroll 3X ""
+.hy 0
-\fBscroll\fR, \fBscrl\fR, \fBwscrl\fR - scroll a \fBcurses\fR window
+\fBwscrl\fR - scroll a \fBcurses\fR window
\fB#include <curses.h>\fR
\fBint scroll(WINDOW *win);\fR
\fBint scrl(int n);\fR
@@ -46,28 +52,34 @@ the lines in the window data structure.
As an optimization, if the scrolling
region of the window is the entire screen, the physical screen may be scrolled
at the same time.
For positive \fIn\fR, the \fBscrl\fR and \fBwscrl\fR routines scroll the
window up \fIn\fR lines (line \fIi\fR+\fIn\fR becomes \fIi\fR); otherwise
scroll the window down \fIn\fR lines.
This involves moving the lines in the
window character image structure.
The current cursor position is not changed.
For these functions to work, scrolling must be enabled via \fBscrollok\fR.
These routines return \fBERR\fR upon failure, and \fBOK\fR (SVr4 only specifies
"an integer value other than \fBERR\fR") upon successful completion.
+X/Open defines no error conditions.
+This implementation returns an error
+if the window pointer is null, or
+if scrolling is not enabled in the window, e.g., with \fBscrollok\fP.
Note that \fBscrl\fR and \fBscroll\fR may be macros.
-The SVr4 documentation says that the optimization of physically scrolling
+The SVr4 documentation says that the optimization of physically scrolling
immediately if the scroll region is the entire screen "is" performed, not
"may be" performed.
This implementation deliberately does not guarantee
that this will occur, to leave open the possibility of smarter
-optimization of multiple scroll actions on the next update.
+optimization of multiple scroll actions on the next update.
Neither the SVr4 nor the XSI documentation specify whether the current
attribute or
current color-pair of blanks generated by the scroll function is zeroed.