---

winstl_error_scope.h

Go to the documentation of this file.

/* 
 * File:        winstl_error_scope.h (formerly MWTErrScp.h, ::SynesisWin)
 *
 * Purpose:     Win32 LastError scoping class.
 *
 * Created:     27th November 1998
 * Updated:     11th September 2004
 *
 * Home:        http://stlsoft.org/
 *
 * Copyright (c) 1998-2004, Matthew Wilson and Synesis Software
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice, this
 *   list of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice,
 *   this list of conditions and the following disclaimer in the documentation
 *   and/or other materials provided with the distribution.
 * - Neither the name(s) of Matthew Wilson and Synesis Software nor the names of
 *   any contributors may be used to endorse or promote products derived from
 *   this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * 



#ifndef WINSTL_INCL_H_WINSTL_ERROR_SCOPE
#define WINSTL_INCL_H_WINSTL_ERROR_SCOPE

#ifndef __STLSOFT_DOCUMENTATION_SKIP_SECTION
# define WINSTL_VER_H_WINSTL_ERROR_SCOPE_MAJOR      2
# define WINSTL_VER_H_WINSTL_ERROR_SCOPE_MINOR      0
# define WINSTL_VER_H_WINSTL_ERROR_SCOPE_REVISION   1
# define WINSTL_VER_H_WINSTL_ERROR_SCOPE_EDIT       27
#endif /* !__STLSOFT_DOCUMENTATION_SKIP_SECTION */

/* 
 * Includes
 */

#ifndef WINSTL_INCL_H_WINSTL
# include "winstl.h"                // Include the WinSTL root header
#endif /* !WINSTL_INCL_H_WINSTL */

/* 
 * Namespace
 */

#ifndef _WINSTL_NO_NAMESPACE
# if defined(_STLSOFT_NO_NAMESPACE) || \
     defined(__STLSOFT_DOCUMENTATION_SKIP_SECTION)
/* There is no stlsoft namespace, so must define ::winstl */
namespace winstl
{
# else
/* Define stlsoft::winstl_project */

namespace stlsoft
{

namespace winstl_project
{

# endif /* _STLSOFT_NO_NAMESPACE */
#endif /* !_WINSTL_NO_NAMESPACE */

/* 




/* 
 * Classes
 */

class last_error_scope
{
public:
    typedef last_error_scope    class_type;

public:
    last_error_scope() stlsoft_throw_0()
        : m_dwErr(::GetLastError())
    {}
    ss_explicit_k last_error_scope(ws_dword_t dwErr) stlsoft_throw_0()
        : m_dwErr(::GetLastError())
    {
        ::SetLastError(dwErr);
    }
    ~last_error_scope() stlsoft_throw_0()
    {
        ::SetLastError(m_dwErr);
    }


public:
    operator ws_dword_t () const
    {
        return m_dwErr;
    }


// Members
private:
    ws_dword_t  m_dwErr;

// Not to be implemented
private:
    last_error_scope(last_error_scope const &);
    last_error_scope &operator =(last_error_scope const &);
};

/* 


/* 

#ifndef _WINSTL_NO_NAMESPACE
# if defined(_STLSOFT_NO_NAMESPACE) || \
     defined(__STLSOFT_DOCUMENTATION_SKIP_SECTION)
} // namespace winstl
# else
} // namespace winstl_project
} // namespace stlsoft
# endif /* _STLSOFT_NO_NAMESPACE */
#endif /* !_WINSTL_NO_NAMESPACE */

/* 

#endif /* WINSTL_INCL_H_WINSTL_ERROR_SCOPE */

/* 

STLSoft Libraries documentation © Synesis Software Pty Ltd, 2001-2004