D:/opendownloadmanager/ODM-1.x/vmsObjectSmartPtr.h

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/*
  Free Download Manager Copyright (c) 2003-2007 FreeDownloadManager.ORG
  Open Download Manager Copyright (c) 2008-2010 OpenDownloadManager.ORG
*/        

#if !defined(AFX_VMSOBJECTSMARTPTR_H__1ECD7954_DB25_4982_A113_4574EA1C10B7__INCLUDED_)
#define AFX_VMSOBJECTSMARTPTR_H__1ECD7954_DB25_4982_A113_4574EA1C10B7__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif 

#include "vmsObject.h"

template <class T = vmsObject>
class vmsObjectSmartPtr  
{
public:
        vmsObjectSmartPtr (const vmsObjectSmartPtr &ptr)
        {
                m_pObj = NULL;
                *this = ptr;
        }

        vmsObjectSmartPtr(T *pObj = NULL)
        {
                m_pObj = pObj;
                if (m_pObj)
                        m_pObj->AddRef ();
        }
        
        vmsObjectSmartPtr& operator =(const vmsObjectSmartPtr &ptr)
        {
                if (m_pObj)
                        m_pObj->Release ();
                m_pObj = ptr.m_pObj;
                if (m_pObj)
                        m_pObj->AddRef ();
                return *this;
        }
        
        virtual ~vmsObjectSmartPtr() 
        {
                if (m_pObj)
                        m_pObj->Release ();
        }

        T* operator -> () const {return m_pObj;}
        operator T* () const {return m_pObj;}

        void CreateInstance ()
        {
                if (m_pObj)
                        m_pObj->Release ();
                m_pObj = new T;
                m_pObj->AddRef ();
        }

protected:
        T *m_pObj;
};

#endif 

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