1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /*
23 * Copyright 1997 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1988 AT&T */
28 /* All Rights Reserved */
29
30 /*
31 * University Copyright- Copyright (c) 1982, 1986, 1988
32 * The Regents of the University of California
33 * All Rights Reserved
34 *
35 * University Acknowledgment- Portions of this document are derived from
36 * software developed by the University of California, Berkeley, and its
37 * contributors.
38 */
39
40 #pragma ident "%Z%%M% %I% %E% SMI"
41
42 /*LINTLIBRARY*/
43
44 #include <stdlib.h>
45 #include <sys/types.h>
46 #include "curses_inc.h"
47
48 /* This routine deletes a _window and releases it back to the system. */
49
50 int
delwin(WINDOW * win)51 delwin(WINDOW *win)
52 {
53 int i;
54 WINDOW *par;
55
56 /* If we have children don't delte the window. */
57 if (win->_ndescs > 0)
58 return (ERR);
59
60 /*
61 * If window is a pad, delete the padwin associated with it.
62 * NOTE: We shouldn't care that the recursive call will decrement
63 * ndescs for this window, since the window will be deleted anyhow.
64 */
65
66 if (win->_padwin) {
67 win->_padwin->_maxy = win->_maxy;
68 (void) delwin(win->_padwin);
69 }
70 if (win->_parent == NULL) {
71 /* Delete all the memory associated with this window. */
72 for (i = win->_maxy; i-- > 0; ) {
73 free((char *)win->_y[i]);
74 #ifdef _VR3_COMPAT_CODE
75 if (_y16update)
76 free((char *)win->_y16[i]);
77 #endif /* _VR3_COMPAT_CODE */
78 }
79 } else {
80 /*
81 * We are a subwin and we don't want to delete the memory since
82 * it's shared by other windows. We do want to decrement the
83 * descendant count so that if there are no children left to a
84 * particular window winsdelln.c will run in fast mode (look there).
85 */
86 for (par = win->_parent; par != NULL; par = par->_parent)
87 par->_ndescs--;
88 }
89
90 #ifdef _VR3_COMPAT_CODE
91 if (_y16update)
92 free((char *)win->_y16);
93 #endif /* _VR3_COMPAT_CODE */
94
95 free((char *)win->_y);
96 free((char *)win->_firstch);
97 free((char *)win);
98 return (OK);
99 }
100