IUnknown.h

#ifndef __IUNKNOWN_H_
#define __IUNKNOWN_H_
/*
Peon - Win32 Games Programming Library
Copyright (C) 2002-2005 Erik Yuzwa

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Library General Public License for more details.

You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

Erik Yuzwa
peon AT wazooinc DOT com
*/

#include "Peonstdafx.h"

namespace peon
{
        class PEONMAIN_API IUnknown
        {
        protected:
                int             m_id;

                int             m_refCount;

        public:
                IUnknown() : m_refCount(1), m_id(0)
                {
                }

                virtual ~IUnknown()
                {
                
                }

                int getID(){ return m_id; }

                void setID( int new_id ){ m_id = new_id; }

                void addRefCount() { ++m_refCount; }

                bool dropRefCount()
                {
                        //decrement the reference counter variable. If we drop
                        //below zero, then we can automatically clean this up
                        //with a delete call.
                        //
                        --m_refCount;
                        if (!m_refCount)
                        {
                                delete this;
                                return true;
                        }

                        return false;
                }

        };
}

#endif

---