class BlockPtr
{
class Block
{
friend BlockPtr;
protected:
char *m_BlockData;
char *MakeBlockResident();
Block();

public:
char Get(int p_Index);
};

protected:
Block m_Block;

public:
Block *operator->();
BlockPtr();
};


BlockPtr::Block::Block()
{
	m_BlockData = 0;
}

BlockPtr::Block *BlockPtr::operator->()
{
	m_Block.m_BlockData = m_Block.MakeBlockResident();
	return &m_Block;
}

char *BlockPtr::Block::MakeBlockResident()
{
	return new char[1000];
}

char BlockPtr::Block::Get(int p_Index)
{
	return m_BlockData[p_Index];
}

main()
{
	BlockPtr X;
	BlockPtr *Y;
	BlockPtr::Block Z; // illegal; the constructor is protected

	X->Get(1); // okay; goes through operator-> to Block object
	Y->Get(1); // won't compile, since BlockPtr doesn't have Get
	X.Get(1);  // won't compile, for the same reason
}