TipCandidateString.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"
#include <string>

class CTipCandidateString : public ITfCandidateString
{
  protected:
    CTipCandidateString();
    virtual ~CTipCandidateString();

  public:
    static HRESULT CreateInstance(_Outptr_ CTipCandidateString **ppobj);
    static HRESULT CreateInstance(REFIID riid, _Outptr_ void **ppvObj);

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

    // ITfCandidateString methods
    virtual STDMETHODIMP GetString(BSTR *pbstr);
    virtual STDMETHODIMP GetIndex(_Out_ ULONG *pnIndex);

    virtual STDMETHODIMP SetIndex(ULONG uIndex);
    virtual STDMETHODIMP SetString(_In_ const WCHAR *pch, DWORD_PTR length);

  protected:
    long _refCount;
    int _index;
    std::wstring _candidateStr;
};