BSD 4_4_Lite2 release
[unix-history] / usr / src / lib / libcurses / delwin.c
CommitLineData
ad787160 1/*
826389f4 2 * Copyright (c) 1981, 1993, 1994
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3 * The Regents of the University of California. All rights reserved.
4 *
c0567266
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5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
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32 */
33
34#ifndef lint
fd88f5c5 35static char sccsid[] = "@(#)delwin.c 8.2 (Berkeley) 5/4/94";
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36#endif /* not lint */
37
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38#include <stdlib.h>
39
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40#include "curses.h"
41
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42/*
43 * delwin --
44 * Delete a window and release it back to the system.
45 */
46int
47delwin(win)
48 register WINDOW *win;
49{
50
51 register WINDOW *wp, *np;
52
53 if (win->orig == NULL) {
54 /*
55 * If we are the original window, delete the space for all
56 * the subwindows, the line space and the window space.
57 */
58 free(win->lspace);
59 free(win->wspace);
60 free(win->lines);
61 wp = win->nextp;
62 while (wp != win) {
63 np = wp->nextp;
64 delwin(wp);
65 wp = np;
66 }
67 } else {
68 /*
69 * If we are a subwindow, take ourselves out of the list.
70 * NOTE: if we are a subwindow, the minimum list is orig
71 * followed by this subwindow, so there are always at least
72 * two windows in the list.
73 */
74 for (wp = win->nextp; wp->nextp != win; wp = wp->nextp)
75 continue;
76 wp->nextp = win->nextp;
77 }
78 free(win);
79 return (OK);
80}