math.h

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// Math.h : Declaration of the CMath

#ifndef __MATH_H_
#define __MATH_H_

#include "resource.h"       // main symbols

/////////////////////////////////////////////////////////////////////////////
// CMath
class ATL_NO_VTABLE CMath : 
	public CComObjectRootEx<CComSingleThreadModel>,
	public CComCoClass<CMath, &CLSID_Math>,
	public IMath
{
public:
	CMath()
	{
      m_pCallBack = 0;
	}

DECLARE_REGISTRY_RESOURCEID(IDR_MATH)

BEGIN_COM_MAP(CMath)
	COM_INTERFACE_ENTRY(IMath)
END_COM_MAP()

// IMath
public:
   STDMETHOD(Add)(long lOp1, long lOp2);
   STDMETHOD(Multiply)(long lOp1, long lOp2);
   STDMETHOD(Subtract)(long lOp1, long lOp2);
   STDMETHOD(Divide)(long lOp1, long lOp2);
   STDMETHOD(Advise)(ICallBack* pCallBack);
   STDMETHOD(UnAdvise)();

private:
   ICallBack* m_pCallBack;
};

#endif //__MATH_H_