1 /****************************************************************************
2 * Copyright (c) 1998,2000,2001 Free Software Foundation, Inc. *
3 * *
4 * Permission is hereby granted, free of charge, to any person obtaining a *
5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
7 * without limitation the rights to use, copy, modify, merge, publish, *
8 * distribute, distribute with modifications, sublicense, and/or sell *
9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
11 * *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
14 * *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
22 * *
23 * Except as contained in this notice, the name(s) of the above copyright *
24 * holders shall not be used in advertising or otherwise to promote the *
25 * sale, use or other dealings in this Software without prior written *
26 * authorization. *
27 ****************************************************************************/
28
29 /****************************************************************************
30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
31 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
32 ****************************************************************************/
33
34 /*
35 ** lib_delwin.c
36 **
37 ** The routine delwin().
38 **
39 */
40
41 #include <curses.priv.h>
42
43 MODULE_ID("$Id: lib_delwin.c,v 1.13 2001/08/26 00:40:20 tom Exp $")
44
45 static bool
cannot_delete(WINDOW * win)46 cannot_delete(WINDOW *win)
47 {
48 WINDOWLIST *p;
49 bool result = TRUE;
50
51 for (p = _nc_windows; p != 0; p = p->next) {
52 if (&(p->win) == win) {
53 result = FALSE;
54 } else if ((p->win._flags & _SUBWIN) != 0
55 && p->win._parent == win) {
56 result = TRUE;
57 break;
58 }
59 }
60 return result;
61 }
62
63 NCURSES_EXPORT(int)
delwin(WINDOW * win)64 delwin(WINDOW *win)
65 {
66 T((T_CALLED("delwin(%p)"), win));
67
68 if (win == 0
69 || cannot_delete(win))
70 returnCode(ERR);
71
72 if (win->_flags & _SUBWIN)
73 touchwin(win->_parent);
74 else if (curscr != 0)
75 touchwin(curscr);
76
77 returnCode(_nc_freewin(win));
78 }
79