2 Copyright (C) 2000-2007 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef __pbd_destructible_h__
21 #define __pbd_destructible_h__
23 #include <sigc++/signal.h>
27 /* be very very careful using this class. it does not inherit from sigc::trackable and thus
28 should only be used in multiple-inheritance situations involving another type
29 that does inherit from sigc::trackable (or sigc::trackable itself)
32 class ThingWithGoingAway {
34 virtual ~ThingWithGoingAway () {}
35 sigc::signal<void> GoingAway;
38 class Destructible : public sigc::trackable, public ThingWithGoingAway {
40 virtual ~Destructible () {}
41 void drop_references () const { GoingAway(); }
47 #endif /* __pbd_destructible_h__ */