AutoComInit.h

/* Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the LICENSE file distributed with
 * this work for additional information regarding copyright ownership.
 *
 * Also, if exists, check the Licenses directory for information about
 * third-party modules.
 *
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#ifndef _MXLIBHLP_AUTO_COM_INITIALIZE_H
#define _MXLIBHLP_AUTO_COM_INITIALIZE_H

#include <Windows.h>
#include <Ole2.h>

//-----------------------------------------------------------

namespace MX {

class CAutoComInit
{
public:
  CAutoComInit()
    {
    hRes = ::CoInitializeEx(NULL, COINIT_MULTITHREADED);
    return;
    };

  ~CAutoComInit()
    {
    if (SUCCEEDED(hRes))
      ::CoUninitialize();
    return;
    };

  HRESULT InitResult() const
    {
    return (SUCCEEDED(hRes) || hRes == RPC_E_CHANGED_MODE) ? S_OK : hRes;
    };

private:
  HRESULT hRes;
};

}; //namespace MX

//-----------------------------------------------------------

#endif //_MXLIBHLP_AUTO_COM_INITIALIZE_H