wmoveprevch.c revision 2
2N/A/*
2N/A * CDDL HEADER START
2N/A *
2N/A * The contents of this file are subject to the terms of the
2N/A * Common Development and Distribution License, Version 1.0 only
2N/A * (the "License"). You may not use this file except in compliance
2N/A * with the License.
2N/A *
2N/A * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
2N/A * or http://www.opensolaris.org/os/licensing.
2N/A * See the License for the specific language governing permissions
2N/A * and limitations under the License.
2N/A *
2N/A * When distributing Covered Code, include this CDDL HEADER in each
2N/A * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
2N/A * If applicable, add the following below this CDDL HEADER, with the
2N/A * fields enclosed by brackets "[]" replaced with your own identifying
2N/A * information: Portions Copyright [yyyy] [name of copyright owner]
2N/A *
2N/A * CDDL HEADER END
2N/A */
2N/A/*
2N/A * Copyright (c) 1988 by Sun Microsystems, Inc.
2N/A */
2N/A
2N/A#pragma ident "%Z%%M% %I% %E% SMI"
2N/A
2N/A/*LINTLIBRARY*/
2N/A
2N/A#include <sys/types.h>
2N/A#include "curses_inc.h"
2N/A
2N/Aint
2N/Awmoveprevch(WINDOW *win)
2N/A/*
2N/A * wmoveprevch --- moves the cursor back to the previous char of char
2N/A * cursor is currently on. This is used to move back over a multi-column
2N/A * character. When the cursor is on a character at the left-most
2N/A * column, the cursor will stay there.
2N/A */
2N/A{
2N/A chtype *_yy;
2N/A short x;
2N/A
2N/A (void) wadjcurspos(win);
2N/A x = win->_curx;
2N/A if (x == 0) /* Can't back up any more. */
2N/A return (ERR);
2N/A _yy = win->_y[win->_cury];
2N/A --x;
2N/A while ((x > 0) && (ISCBIT(_yy[x])))
2N/A --x;
2N/A win->_curx = x;
2N/A win->_flags |= _WINMOVED;
2N/A return (win->_immed ? wrefresh(win): OK);
2N/A}