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