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Copyright 1989 AT&T
Portions Copyright (c) 1996, Sun Microsystems, Inc. All Rights Reserved.
The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
curs_scroll, scroll, scrl, wscrl - scroll a curses window

cc [ flag ... ] file ... -lcurses [ library ... ]
#include <curses.h>

int scroll(WINDOW *win);

int scrl(int n);

int wscrl(WINDOW *win, int n);

With the scroll() routine, the window is scrolled up one line. This involves moving the lines in the window data structure. As an optimization, if the scrolling region of the window is the entire screen, the physical screen is scrolled at the same time.

With the scrl() and wscrl() routines, for positive n scroll the window up n lines (line i+n becomes i); otherwise scroll the window down n 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 scrollok().

All routines return the integer ERR upon failure and an integer value other than ERR upon successful completion.

See attributes(7) for descriptions of the following attributes:

ATTRIBUTE TYPE ATTRIBUTE VALUE

MT-Level Unsafe

curs_outopts (3CURSES), curses (3CURSES), attributes (7)

The header <curses.h> automatically includes the headers <stdio.h> and <unctrl.h>.

Note that scrl() and scroll() may be macros.