Protected Virtual destructors Q.

[Zeeshan]

Well, the class itself is assigning "rights" to other class (or function).

What I explained was "denying" everyone to create stack instance.

You are absolutely right. I just wanted to show how it is possible using friend classes i.e. "denying everyone other than friends". There is even one non-standard way too, you can compile this code in even VC 2008, but again it is non-standard.

template <typename T>
class PrivateDtor
{
private:
	PrivateDtor()
	{
		std::cout << "PrivateDtor::PrivateDtor" << std::endl;
	}

	~PrivateDtor()
	{
		std::cout << "PrivateDtor::~PrivateDtor" << std::endl;
	}
	friend typename T;
};

class FriendClass
{
private:
	PrivateDtor<FriendClass> m_objPrivateDtor;
};

Here "friend typename T;" is a non standard way.