comm.h

使用方法如下： 1、在工程中加入comm.h这个头文件 2、在stdafx.h中加入 #include 3、在聚合类改变方法如下： 原句：public IDispatchImpl 新句：public

#ifndef __COMM_H_
#define __COMM_H_

template <class InterFaceName>
class _CopyVariantFromLong
{
public :
	static void init(VARIANT* p) { VariantInit (p); }
	static void destroy(VARIANT* p) { VariantClear (p); }
	static HRESULT copy(VARIANT* pTo, const UINT* pFrom)
	{
		if(!pTo)return S_FALSE;
		VariantClear (pTo);
		CComPtr<InterFaceName> p = (InterFaceName*)(*pFrom);
		HRESULT hr = p.CopyTo((InterFaceName**)&pTo->pdispVal);
		if(FAILED(hr)) return S_FALSE;
		pTo->vt = VT_DISPATCH;
		return S_OK;
	}
};
template <class InterFaceName>
class _CopyInterFaceFromLong
{
public :
	static void init(InterFaceName** p)
	{
		return;
	}
	static void destroy(InterFaceName** p)
	{
		//if(p && *p)
		//{
		//	(*p)->Release();
		//	(*p) = NULL;
		//}		
		return;
	}
	static HRESULT copy(InterFaceName** pTo, const UINT* pFrom)
	{
		CComPtr<InterFaceName> p = (InterFaceName*)(*pFrom);
		HRESULT hr = p.CopyTo(pTo);
		if(FAILED(hr)) return S_FALSE;
		return S_OK;
	}
};


template <class ParentInterFaceName,class ChildInterFaceName>
class _EnumColl
{
public:
	typedef std::vector<UINT>							ContainerType;
	typedef VARIANT										EnumeratorExposedType;
	typedef IEnumVARIANT								EnumeratorInterface;
	typedef ChildInterFaceName*							CollectionExposedType;
	typedef ParentInterFaceName							CollectionInterface;
	typedef _CopyVariantFromLong<ChildInterFaceName>	EnumeratorCopyType;
	typedef _CopyInterFaceFromLong<ChildInterFaceName>	CollectionCopyType;
	typedef CComEnumOnSTL< EnumeratorInterface,
		&__uuidof(EnumeratorInterface),
		EnumeratorExposedType,EnumeratorCopyType,
		ContainerType >									EnumeratorType;
	typedef ICollectionOnSTLImpl< CollectionInterface,
		ContainerType, CollectionExposedType,
		CollectionCopyType, EnumeratorType >			CollectionType;
};


#endif //__COMM_H_