ActiveX/DCOM/ATL

开发平台：

Visual C++

MyVariant.h：源码内容

							// MyVariant.h : Declaration of the CMyVariant
#ifndef __MYVARIANT_H_
#define __MYVARIANT_H_
#include "resource.h"       // main symbols
/////////////////////////////////////////////////////////////////////////////
// CMyVariant
class ATL_NO_VTABLE CMyVariant : 
	public CComObjectRootEx<CComSingleThreadModel>,
	public CComCoClass<CMyVariant, &CLSID_MyVariant>,
	public IDispatchImpl<IMyVariant, &IID_IMyVariant, &LIBID_DEMOVARIANTLib>
{
public:
	CMyVariant()
	{
	}
DECLARE_REGISTRY_RESOURCEID(IDR_MYVARIANT)
DECLARE_PROTECT_FINAL_CONSTRUCT()
BEGIN_COM_MAP(CMyVariant)
	COM_INTERFACE_ENTRY(IMyVariant)
	COM_INTERFACE_ENTRY(IDispatch)
END_COM_MAP()
// IMyVariant
public:
	STDMETHOD(add)(/*[in]*/ VARIANT a, /*[in]*/ VARIANT b, /*[out]*/ VARIANT* c);
};
#endif //__MYVARIANT_H_

						