Auto-releasing wrapper for COM pointers

comptr.h

// Auto-releasing wrapper for COM pointers
// Feel free to use this for whatever, I don't care
template <typename T>
struct comptr
{
	T * p;

	comptr(): p(nullptr) {}
	comptr(T * other): p(other)
		{ if (p) p->AddRef(); }
	comptr(const comptr<T> & other): p(other.p)
		{ if (p) p->AddRef(); }
	comptr(comptr<T> && other): p(other.p)
		{ other.p = nullptr; }

	void release()
		{ if (p) { p->Release(); p = nullptr; } }
	~comptr()
		{ release(); }

	comptr<T> & operator = (T * other)
		{ release(); p = other; if (p) p->AddRef(); return *this; }
	comptr<T> & operator = (const comptr<T> & other)
		{ release(); p = other.p; if (p) p->AddRef(); return *this; }
	comptr<T> & operator = (comptr<T> && other)
		{ release(); p = other.p; other.p = nullptr; return *this; }

	T ** operator & () { return &p; }
	T * operator * () { return p; }
	T * operator -> () { return p; }
	operator T * () { return p; }
};