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tetex-bin  3.0
lib_delwin.c
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00001 /****************************************************************************
00002  * Copyright (c) 1998,2000,2001 Free Software Foundation, Inc.              *
00003  *                                                                          *
00004  * Permission is hereby granted, free of charge, to any person obtaining a  *
00005  * copy of this software and associated documentation files (the            *
00006  * "Software"), to deal in the Software without restriction, including      *
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00009  * copies of the Software, and to permit persons to whom the Software is    *
00010  * furnished to do so, subject to the following conditions:                 *
00011  *                                                                          *
00012  * The above copyright notice and this permission notice shall be included  *
00013  * in all copies or substantial portions of the Software.                   *
00014  *                                                                          *
00015  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
00016  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
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00020  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
00021  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
00022  *                                                                          *
00023  * Except as contained in this notice, the name(s) of the above copyright   *
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00028 
00029 /****************************************************************************
00030  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
00031  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
00032  ****************************************************************************/
00033 
00034 /*
00035 **     lib_delwin.c
00036 **
00037 **     The routine delwin().
00038 **
00039 */
00040 
00041 #include <curses.priv.h>
00042 
00043 MODULE_ID("$Id: lib_delwin.c,v 1.13 2001/08/26 00:40:20 tom Exp $")
00044 
00045 static bool
00046 cannot_delete(WINDOW *win)
00047 {
00048     WINDOWLIST *p;
00049     bool result = TRUE;
00050 
00051     for (p = _nc_windows; p != 0; p = p->next) {
00052        if (&(p->win) == win) {
00053            result = FALSE;
00054        } else if ((p->win._flags & _SUBWIN) != 0
00055                  && p->win._parent == win) {
00056            result = TRUE;
00057            break;
00058        }
00059     }
00060     return result;
00061 }
00062 
00063 NCURSES_EXPORT(int)
00064 delwin(WINDOW *win)
00065 {
00066     T((T_CALLED("delwin(%p)"), win));
00067 
00068     if (win == 0
00069        || cannot_delete(win))
00070        returnCode(ERR);
00071 
00072     if (win->_flags & _SUBWIN)
00073        touchwin(win->_parent);
00074     else if (curscr != 0)
00075        touchwin(curscr);
00076 
00077     returnCode(_nc_freewin(win));
00078 }