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mutual type refs

General and Gameplay Programming Programming

Started by xropi November 04, 2002 05:45 AM

3 comments, last by xropi 21 years, 5 months ago

xropi

122

Author

November 04, 2002 05:45 AM

In the following situation there are mutual references. The compiler tells me: error C2027: use of undefined type 'CTest'

          
class	CTest;

class CSmall {
	CTest::TT	m_x:         // error reported here

};


class CTest {
	typedef int TT;       // or any other type

	vector<CSmall>		m_xx;
};

If TT was in global scope, my problem would be solved. But what if this condition can't be realized? How would you handle that? [edited by - xropi on November 4, 2002 6:48:28 AM]

I'm interested in full featured 3D system development.

Pepe

122

November 04, 2002 05:59 AM

    #include <vector>using namespace std;class CSmall;class CTest {public:	typedef int TT;       // or any other typeprivate:	vector<CSmall> m_xx;};class CSmall {	CTest::TT m_x;};

[edited by - Pepe on November 4, 2002 7:00:31 AM]

Evil Bill

126

November 04, 2002 08:11 AM

That won''t work. You need the structure implementation to create a vector of it (ISTR).

The only way i can see is to make m_xx a vector or CSmall*s.

HTH, Steve

Steve
DirectX Programmer
Soon to be the new Bill Gates