/****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2008,2009 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
/****************************************************************************
* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
+ * and: Thomas E. Dickey 1996-on *
+ * and: Juergen Pfeifer 2008 *
****************************************************************************/
/*
#include <curses.priv.h>
-MODULE_ID("$Id: lib_delwin.c,v 1.9 1998/02/11 12:13:53 tom Exp $")
+MODULE_ID("$Id: lib_delwin.c,v 1.20 2009/10/24 22:02:14 tom Exp $")
-static bool have_children(WINDOW *win)
+static bool
+cannot_delete(WINDOW *win)
{
- WINDOWLIST *p;
- for (p = _nc_windows; p != 0; p = p->next) {
- if (p->win->_flags & _SUBWIN
- && p->win->_parent == win)
- return TRUE;
+ WINDOWLIST *p;
+ bool result = TRUE;
+#ifdef USE_SP_WINDOWLIST
+ SCREEN *sp = _nc_screen_of(win);
+#endif
+
+ for (each_window(SP_PARM, p)) {
+ if (&(p->win) == win) {
+ result = FALSE;
+ } else if ((p->win._flags & _SUBWIN) != 0
+ && p->win._parent == win) {
+ result = TRUE;
+ break;
}
- return FALSE;
+ }
+ return result;
}
-int delwin(WINDOW *win)
+NCURSES_EXPORT(int)
+delwin(WINDOW *win)
{
- T((T_CALLED("delwin(%p)"), win));
+ int result = ERR;
- if (win == 0
- || have_children(win))
- returnCode(ERR);
+ T((T_CALLED("delwin(%p)"), (void *) win));
- if (win->_flags & _SUBWIN)
+ if (_nc_try_global(curses) == 0) {
+ if (win == 0
+ || cannot_delete(win)) {
+ result = ERR;
+ } else {
+#if NCURSES_SP_FUNCS
+ SCREEN *sp = _nc_screen_of(win);
+#endif
+ if (win->_flags & _SUBWIN)
touchwin(win->_parent);
- else if (curscr != 0)
- touchwin(curscr);
+ else if (CurScreen(SP_PARM) != 0)
+ touchwin(CurScreen(SP_PARM));
- _nc_freewin(win);
-
- returnCode(OK);
+ result = _nc_freewin(win);
+ }
+ _nc_unlock_global(curses);
+ }
+ returnCode(result);
}