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<CComMultiThreadModel>,
	public CComCoClass<CMath, &CLSID_Math>,
	public IMath
{
public:
	CMath()
	{
		m_pUnkMarshaler = NULL;
	}

DECLARE_REGISTRY_RESOURCEID(IDR_MATH)
DECLARE_NOT_AGGREGATABLE(CMath)
DECLARE_GET_CONTROLLING_UNKNOWN()

BEGIN_COM_MAP(CMath)
	COM_INTERFACE_ENTRY(IMath)
	COM_INTERFACE_ENTRY_AGGREGATE(IID_IMarshal, m_pUnkMarshaler.p)
END_COM_MAP()

	HRESULT FinalConstruct()
	{
		return CoCreateFreeThreadedMarshaler(
			GetControllingUnknown(), &m_pUnkMarshaler.p);
	}

	void FinalRelease()
	{
		m_pUnkMarshaler.Release();
	}

	CComPtr<IUnknown> m_pUnkMarshaler;

// IMath
public:
	STDMETHOD(Divide)(/*[in]*/ long lOp1, /*[in]*/ long lOp2, /*[out,retval]*/ long* plResult);
	STDMETHOD(Multiply)(/*[in]*/ long lOp1, /*[in]*/ long lOp2, /*[out,retval]*/ long* plResult);
	STDMETHOD(Subtract)(/*[in]*/ long lOp1, /*[in]*/ long lOp2, /*[out,retval]*/ long* plResult);
	STDMETHOD(Add)(/*[in]*/ long lOp1, /*[in]*/ long lOp2, /*[out,retval]*/ long* plResult);
};

#endif //__MATH_H_