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clearok.c revision 1.6 
      1  1.6  blymn /*	$NetBSD: clearok.c,v 1.6 2024/12/23 02:58:03 blymn Exp $	*/
      2  1.2  blymn 
      3  1.2  blymn /*-
      4  1.2  blymn  * Copyright (c) 1999 The NetBSD Foundation, Inc.
      5  1.2  blymn  * All rights reserved.
      6  1.2  blymn  *
      7  1.2  blymn  * This code is derived from software contributed to The NetBSD Foundation
      8  1.2  blymn  * by Julian Coleman.
      9  1.2  blymn  *
     10  1.2  blymn  * Redistribution and use in source and binary forms, with or without
     11  1.2  blymn  * modification, are permitted provided that the following conditions
     12  1.2  blymn  * are met:
     13  1.2  blymn  * 1. Redistributions of source code must retain the above copyright
     14  1.2  blymn  *    notice, this list of conditions and the following disclaimer.
     15  1.2  blymn  * 2. Redistributions in binary form must reproduce the above copyright
     16  1.2  blymn  *    notice, this list of conditions and the following disclaimer in the
     17  1.2  blymn  *    documentation and/or other materials provided with the distribution.
     18  1.2  blymn  *
     19  1.2  blymn  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  1.2  blymn  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  1.2  blymn  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  1.2  blymn  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  1.2  blymn  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  1.2  blymn  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  1.2  blymn  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  1.2  blymn  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  1.2  blymn  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  1.2  blymn  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  1.2  blymn  * POSSIBILITY OF SUCH DAMAGE.
     30  1.2  blymn  */
     31  1.4  blymn 
     32  1.4  blymn #include <sys/cdefs.h>
     33  1.4  blymn #ifndef lint
     34  1.6  blymn __RCSID("$NetBSD: clearok.c,v 1.6 2024/12/23 02:58:03 blymn Exp $");
     35  1.4  blymn #endif				/* not lint */
     36  1.2  blymn 
     37  1.2  blymn #include "curses.h"
     38  1.2  blymn #include "curses_private.h"
     39  1.2  blymn 
     40  1.2  blymn /*
     41  1.2  blymn  * clearok --
     42  1.2  blymn  *	Turn on and off clear before refresh for the given window.
     43  1.2  blymn  */
     44  1.2  blymn int
     45  1.3  blymn clearok(WINDOW *win, bool bf)
     46  1.2  blymn {
     47  1.6  blymn 	if (__predict_false(win == NULL))
     48  1.6  blymn 		return ERR;
     49  1.6  blymn 
     50  1.2  blymn 	if (bf)
     51  1.2  blymn 		win->flags |= __CLEAROK;
     52  1.2  blymn 	else
     53  1.2  blymn 		win->flags &= ~__CLEAROK;
     54  1.2  blymn 	return (OK);
     55  1.2  blymn }
     56