1 /**************************************************************************** 2 * Copyright 2020 Thomas E. Dickey * 3 * Copyright 1998-2008,2009 Free Software Foundation, Inc. * 4 * * 5 * Permission is hereby granted, free of charge, to any person obtaining a * 6 * copy of this software and associated documentation files (the * 7 * "Software"), to deal in the Software without restriction, including * 8 * without limitation the rights to use, copy, modify, merge, publish, * 9 * distribute, distribute with modifications, sublicense, and/or sell * 10 * copies of the Software, and to permit persons to whom the Software is * 11 * furnished to do so, subject to the following conditions: * 12 * * 13 * The above copyright notice and this permission notice shall be included * 14 * in all copies or substantial portions of the Software. * 15 * * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 23 * * 24 * Except as contained in this notice, the name(s) of the above copyright * 25 * holders shall not be used in advertising or otherwise to promote the * 26 * sale, use or other dealings in this Software without prior written * 27 * authorization. * 28 ****************************************************************************/ 29 30 /**************************************************************************** 31 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * 32 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 33 * and: Thomas E. Dickey 1996-on * 34 * and: Juergen Pfeifer 2008 * 35 ****************************************************************************/ 36 37 /* 38 ** lib_delwin.c 39 ** 40 ** The routine delwin(). 41 ** 42 */ 43 44 #include <curses.priv.h> 45 46 MODULE_ID("$Id: lib_delwin.c,v 1.21 2020/02/02 23:34:34 tom Exp $") 47 48 static bool 49 cannot_delete(WINDOW *win) 50 { 51 WINDOWLIST *p; 52 bool result = TRUE; 53 #ifdef USE_SP_WINDOWLIST 54 SCREEN *sp = _nc_screen_of(win); 55 #endif 56 57 for (each_window(SP_PARM, p)) { 58 if (&(p->win) == win) { 59 result = FALSE; 60 } else if ((p->win._flags & _SUBWIN) != 0 61 && p->win._parent == win) { 62 result = TRUE; 63 break; 64 } 65 } 66 return result; 67 } 68 69 NCURSES_EXPORT(int) 70 delwin(WINDOW *win) 71 { 72 int result = ERR; 73 74 T((T_CALLED("delwin(%p)"), (void *) win)); 75 76 if (_nc_try_global(curses) == 0) { 77 if (win == 0 78 || cannot_delete(win)) { 79 result = ERR; 80 } else { 81 #if NCURSES_SP_FUNCS 82 SCREEN *sp = _nc_screen_of(win); 83 #endif 84 if (win->_flags & _SUBWIN) 85 touchwin(win->_parent); 86 else if (CurScreen(SP_PARM) != 0) 87 touchwin(CurScreen(SP_PARM)); 88 89 result = _nc_freewin(win); 90 } 91 _nc_unlock_global(curses); 92 } 93 returnCode(result); 94 } 95