windows-server-2003/net/homenet/alg/exe/enumadapterinfo.h

// EnumerateAdapterInfo.h : Declaration of the CAdapterInfo

#pragma once

#include "resource.h"       // main symbols

#include "AdapterInfo.h"


#include <list>

#include "CollectionAdapters.h"


//
// Store the data in a vector of std::strings
//


typedef CComEnumOnSTL<IEnumAdapterInfo, &IID_IEnumAdapterInfo, IAdapterInfo*, _CopyInterface<IAdapterInfo>, LISTOF_ADAPTERS>    ComEnumOnSTL_ForAdapters;





/////////////////////////////////////////////////////////////////////////////
// CEnumAdapterInfo
//
class ATL_NO_VTABLE CEnumAdapterInfo : 
    public ComEnumOnSTL_ForAdapters,
	public CComCoClass<CEnumAdapterInfo, &CLSID_EnumAdapterInfo>
{
public:
	CEnumAdapterInfo()
	{
  	}

DECLARE_REGISTRY_RESOURCEID(IDR_MAPCOLLECTION)

DECLARE_PROTECT_FINAL_CONSTRUCT()

BEGIN_COM_MAP(CEnumAdapterInfo)
	COM_INTERFACE_ENTRY(IEnumAdapterInfo)
END_COM_MAP()

};



//
// Helper template to create the IEnum
//
template <class EnumType, class CollType>
HRESULT CreateSTLEnumerator(IUnknown** ppUnk, IUnknown* pUnkForRelease, CollType& collection)
{
    if (ppUnk == NULL)
        return E_POINTER;
    *ppUnk = NULL;

    CComObject<EnumType>* pEnum = NULL;
    HRESULT hr = CComObject<EnumType>::CreateInstance(&pEnum);

    if (FAILED(hr))
        return hr;

    hr = pEnum->Init(pUnkForRelease, collection);

    if (SUCCEEDED(hr))
        hr = pEnum->QueryInterface(ppUnk);

    if (FAILED(hr))
        delete pEnum;

    return hr;

} // CreateSTLEnumerator