template< class T >
struct Handle
{
	typedef T subtype;
	T* item;
	
	Handle() : item( NULL ){}
	Handle( T* v ) : item( v ){ if( item ) item->Acquire(); }
	Handle( const Handle& h ) : item( h.item ){ if( item ) item->Acquire(); }
	~Handle(){ if( item ){ item->Release(); item = NULL; } }
	Handle& operator = ( const Handle& h ){ if( item ) item->Release(); item = h.item; if( item ) item->Acquire(); return *this; }
	T* operator -> () const { return item; }
	T& operator * () const { return *item; }
	operator T* () const { return item; }
};