MSIHANDLEを扱う単純なラッパクラス

#pragma once

// '05.01.12 : 新規作成 (sug)

#include <Msi.h>

/////////////////////////////////////////////////////////////////////////////

// CMsiHandleT

template <bool t_bManaged>

class CMsiHandleT

{

public:

    CMsiHandleT()

    {

        m_h = 0;

    }

    CMsiHandleT(MSIHANDLE h)

    {

        m_h = h;

    }

    virtual ~CMsiHandleT()

    {

        if (t_bManaged && m_h != 0)

        {

            this->CloseHandle();

        }

    }

public:

    bool IsValid()

    {

        if (m_h == 0)

        {

            return false;

        }

        return true;

    }

public:

    void Attach(MSIHANDLE h)

    {

        ATLASSERT(m_h == 0);

        ATLASSERT(h != 0);

        m_h = h;

    }

    MSIHANDLE Detach()

    {    

        ATLASSERT(m_h != 0);

        MSIHANDLE h = m_h;

        m_h = 0;

        return h;

    }

public:

    CMsiHandleT& operator =(MSIHANDLE h)

    {

        m_h = h;

        return *this;

    }

    operator MSIHANDLE()

    { 

        return m_h; 

    }

public:

    UINT CloseHandle()

    {

        ATLASSERT(m_h != 0);

        MSIHANDLE h = m_h;

        m_h = 0;

        return ::MsiCloseHandle(h);

    }

public:

   MSIHANDLE m_h;  

};

typedef CMsiHandleT<false>CMsiHandleHandle;

typedef CMsiHandleT<true>CMsiHandle;