1 /*
2 * Copyright (c) 1981, 1993
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. 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.
32 */
33
34 #ifndef lint
35 static char sccsid[] = "@(#)delwin.c 8.1 (Berkeley) 6/4/93";
36 #endif /* not lint */
37
38 #include <curses.h>
39 #include <stdlib.h>
40
41 /*
42 * delwin --
43 * Delete a window and release it back to the system.
44 */
45 int
delwin(win)46 delwin(win)
47 register WINDOW *win;
48 {
49
50 register WINDOW *wp, *np;
51
52 if (win->orig == NULL) {
53 /*
54 * If we are the original window, delete the space for all
55 * the subwindows, the line space and the window space.
56 */
57 free(win->lspace);
58 free(win->wspace);
59 free(win->lines);
60 wp = win->nextp;
61 while (wp != win) {
62 np = wp->nextp;
63 delwin(wp);
64 wp = np;
65 }
66 } else {
67 /*
68 * If we are a subwindow, take ourselves out of the list.
69 * NOTE: if we are a subwindow, the minimum list is orig
70 * followed by this subwindow, so there are always at least
71 * two windows in the list.
72 */
73 for (wp = win->nextp; wp->nextp != win; wp = wp->nextp)
74 continue;
75 wp->nextp = win->nextp;
76 }
77 free(win);
78 return (OK);
79 }
80