advancedmath.h

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// AdvancedMath.h : Declaration of the CAdvancedMath

#ifndef __ADVANCEDMATH_H_
#define __ADVANCEDMATH_H_

#include "resource.h"       // main symbols

const CLSID CLSID_SimpleMath
    = {0x380F79EB,0x4098,0x11D1,{0x88,0x3A,0x44,0x45,0x53,0x54,0x00,0x00}};

/////////////////////////////////////////////////////////////////////////////
// CAdvancedMath
class ATL_NO_VTABLE CAdvancedMath : 
	public CComObjectRootEx<CComSingleThreadModel>,
	public CComCoClass<CAdvancedMath, &CLSID_AdvancedMath>,
	public IAdvancedMath,
   public IMath
{
public:
   CAdvancedMath() : m_pSimpleMath( 0 )
   {
   }

   HRESULT FinalConstruct()
   {
      HRESULT hr = CoCreateInstance( CLSID_SimpleMath,
                                0,
                                CLSCTX_INPROC_SERVER,
                                IID_IMath,
                                (void**) &m_pSimpleMath );        
      return hr;
   }

   void FinalRelease()
   {
      if ( m_pSimpleMath )
         m_pSimpleMath->Release();
   }

DECLARE_REGISTRY_RESOURCEID(IDR_ADVANCEDMATH)

BEGIN_COM_MAP(CAdvancedMath)
	COM_INTERFACE_ENTRY(IAdvancedMath)
	COM_INTERFACE_ENTRY(IMath)
END_COM_MAP()

// IMath - We now must explicitly implement these methods
public:
	STDMETHOD(Divide)(long lOp1, long lOp2, long* plResult);
	STDMETHOD(Multiply)(long lOp1, long lOp2, long* plResult);
	STDMETHOD(Subtract)(long lOp1, long lOp2, long* plResult);
	STDMETHOD(Add)(long lOp1, long lOp2, long* plResult);

// IAdvancedMath
public:
	STDMETHOD(Fibonacci)( short sOp, long* plResult );
	STDMETHOD(Factorial)( short sOp, long* plResult );

private:
   IMath* m_pSimpleMath;

};

#endif //__ADVANCEDMATH_H_