XQUEUEHANDLE.h

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/*  XQUEUEHANDLE.h - QUEUEHANDLE wrapper
    Copyright (C) 2001-2004 Mark Weaver
    Written by Mark Weaver <mark@npsl.co.uk>

    Part of the Open-Win32 library.
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the
    Free Software Foundation, Inc., 59 Temple Place - Suite 330,
    Boston, MA  02111-1307, USA.
*/

#ifndef OW32_XQUEUEHANDLE_H
#define OW32_XQUEUEHANDLE_H

#include <OW32/OW32Libs.h>
#include <Transact.h>
#include <Mq.h>

namespace OW32
{

class XQUEUEHANDLE 
{
private:
    QUEUEHANDLE m_QueueHandle;

    XQUEUEHANDLE(const XQUEUEHANDLE& );
    XQUEUEHANDLE& operator=(const XQUEUEHANDLE& );

public:
    XQUEUEHANDLE() : m_QueueHandle(NULL) {} 
    
    XQUEUEHANDLE(QUEUEHANDLE h) : m_QueueHandle(h) { }
    
    ~XQUEUEHANDLE() {
        (void)Close();
    }
    
    HRESULT Close() {
        HRESULT hr = S_OK;
        if (m_QueueHandle != NULL) {
            hr = MQCloseQueue(m_QueueHandle);
            m_QueueHandle = NULL;
        }
        return hr;
    }
    
    operator QUEUEHANDLE() const { return m_QueueHandle; }

    QUEUEHANDLE* operator&() { return &m_QueueHandle; }

    QUEUEHANDLE operator=(QUEUEHANDLE h) { Close(); m_QueueHandle = h; return m_QueueHandle; }

    QUEUEHANDLE Detach() { QUEUEHANDLE h = m_QueueHandle; m_QueueHandle = NULL; return h; }
};

};

#endif // OW32_XQUEUEHANDLE_H

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