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Annotation of 43BSDTahoe/usr.lib/libcurses/delwin.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1981 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms are permitted
                      6:  * provided that the above copyright notice and this paragraph are
                      7:  * duplicated in all such forms and that any documentation,
                      8:  * advertising materials, and other materials related to such
                      9:  * distribution and use acknowledge that the software was developed
                     10:  * by the University of California, Berkeley.  The name of the
                     11:  * University may not be used to endorse or promote products derived
                     12:  * from this software without specific prior written permission.
                     13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     16:  */
                     17: 
                     18: #ifndef lint
                     19: static char sccsid[] = "@(#)delwin.c   5.3 (Berkeley) 6/30/88";
                     20: #endif /* not lint */
                     21: 
                     22: # include      "curses.ext"
                     23: 
                     24: /*
                     25:  *     This routine deletes a window and releases it back to the system.
                     26:  *
                     27:  */
                     28: delwin(win)
                     29: reg WINDOW     *win; {
                     30: 
                     31:        reg int         i;
                     32:        reg WINDOW      *wp, *np;
                     33: 
                     34:        if (win->_orig == NULL) {
                     35:                /*
                     36:                 * If we are the original window, delete the space for
                     37:                 * all the subwindows, and the array of space as well.
                     38:                 */
                     39:                for (i = 0; i < win->_maxy && win->_y[i]; i++)
                     40:                        free(win->_y[i]);
                     41:                free(win->_firstch);
                     42:                free(win->_lastch);
                     43:                wp = win->_nextp;
                     44:                while (wp != win) {
                     45:                        np = wp->_nextp;
                     46:                        delwin(wp);
                     47:                        wp = np;
                     48:                }
                     49:        }
                     50:        else {
                     51:                /*
                     52:                 * If we are a subwindow, take ourselves out of the
                     53:                 * list.  NOTE: if we are a subwindow, the minimum list
                     54:                 * is orig followed by this subwindow, so there are
                     55:                 * always at least two windows in the list.
                     56:                 */
                     57:                for (wp = win->_nextp; wp->_nextp != win; wp = wp->_nextp)
                     58:                        continue;
                     59:                wp->_nextp = win->_nextp;
                     60:        }
                     61:        free(win->_y);
                     62:        free(win);
                     63: }

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