EnumDisplayAttributeInfo.h

// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
// PARTICULAR PURPOSE.
//
// Copyright (c) Microsoft Corporation. All rights reserved

#pragma once

#include "Private.h"

//+---------------------------------------------------------------------------
//
// CEnumDisplayAttributeInfo
//
//----------------------------------------------------------------------------

class CEnumDisplayAttributeInfo : public IEnumTfDisplayAttributeInfo
{
  public:
    CEnumDisplayAttributeInfo();
    ~CEnumDisplayAttributeInfo();

    // IUnknown
    STDMETHODIMP QueryInterface(REFIID riid, _Outptr_ void **ppvObj);
    STDMETHODIMP_(ULONG) AddRef(void);
    STDMETHODIMP_(ULONG) Release(void);

    // IEnumTfDisplayAttributeInfo
    STDMETHODIMP Clone(_Out_ IEnumTfDisplayAttributeInfo **ppEnum);
    STDMETHODIMP Next(ULONG ulCount, __RPC__out_ecount_part(ulCount, *pcFetched) ITfDisplayAttributeInfo **rgInfo,
                      __RPC__out ULONG *pcFetched);
    STDMETHODIMP Reset();
    STDMETHODIMP Skip(ULONG ulCount);

  private:
    LONG _index;    // next display attribute to enum
    LONG _refCount; // COM ref count
};