00001 /* ///////////////////////////////////////////////////////////////////////// 00002 * File: winstl/error/last_error_scope.hpp (originally MWTErrScp.h, ::SynesisWin) 00003 * 00004 * Purpose: Win32 last error scoping class. 00005 * 00006 * Created: 27th November 1998 00007 * Updated: 10th August 2009 00008 * 00009 * Home: http://stlsoft.org/ 00010 * 00011 * Copyright (c) 1998-2009, Matthew Wilson and Synesis Software 00012 * All rights reserved. 00013 * 00014 * Redistribution and use in source and binary forms, with or without 00015 * modification, are permitted provided that the following conditions are met: 00016 * 00017 * - Redistributions of source code must retain the above copyright notice, this 00018 * list of conditions and the following disclaimer. 00019 * - Redistributions in binary form must reproduce the above copyright notice, 00020 * this list of conditions and the following disclaimer in the documentation 00021 * and/or other materials provided with the distribution. 00022 * - Neither the name(s) of Matthew Wilson and Synesis Software nor the names of 00023 * any contributors may be used to endorse or promote products derived from 00024 * this software without specific prior written permission. 00025 * 00026 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 00027 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00028 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00029 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 00030 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 00031 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 00032 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 00033 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 00034 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 00035 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 00036 * POSSIBILITY OF SUCH DAMAGE. 00037 * 00038 * ////////////////////////////////////////////////////////////////////// */ 00039 00040 00048 #ifndef WINSTL_INCL_WINSTL_ERROR_HPP_LAST_ERROR_SCOPE 00049 #define WINSTL_INCL_WINSTL_ERROR_HPP_LAST_ERROR_SCOPE 00050 00051 #ifndef STLSOFT_DOCUMENTATION_SKIP_SECTION 00052 # define WINSTL_VER_WINSTL_ERROR_HPP_LAST_ERROR_SCOPE_MAJOR 4 00053 # define WINSTL_VER_WINSTL_ERROR_HPP_LAST_ERROR_SCOPE_MINOR 0 00054 # define WINSTL_VER_WINSTL_ERROR_HPP_LAST_ERROR_SCOPE_REVISION 2 00055 # define WINSTL_VER_WINSTL_ERROR_HPP_LAST_ERROR_SCOPE_EDIT 45 00056 #endif /* !STLSOFT_DOCUMENTATION_SKIP_SECTION */ 00057 00058 /* ///////////////////////////////////////////////////////////////////////// 00059 * Compatibility 00060 */ 00061 00062 /* 00063 [DocumentationStatus:Ready] 00064 */ 00065 00066 /* ///////////////////////////////////////////////////////////////////////// 00067 * Includes 00068 */ 00069 00070 #ifndef WINSTL_INCL_WINSTL_H_WINSTL 00071 # include <winstl/winstl.h> 00072 #endif /* !WINSTL_INCL_WINSTL_H_WINSTL */ 00073 00074 /* ///////////////////////////////////////////////////////////////////////// 00075 * Namespace 00076 */ 00077 00078 #ifndef _WINSTL_NO_NAMESPACE 00079 # if defined(_STLSOFT_NO_NAMESPACE) || \ 00080 defined(STLSOFT_DOCUMENTATION_SKIP_SECTION) 00081 /* There is no stlsoft namespace, so must define ::winstl */ 00082 namespace winstl 00083 { 00084 # else 00085 /* Define stlsoft::winstl_project */ 00086 00087 namespace stlsoft 00088 { 00089 00090 namespace winstl_project 00091 { 00092 00093 # endif /* _STLSOFT_NO_NAMESPACE */ 00094 #endif /* !_WINSTL_NO_NAMESPACE */ 00095 00096 /* ///////////////////////////////////////////////////////////////////////// 00097 * Classes 00098 */ 00099 00119 class last_error_scope 00120 { 00123 public: 00124 typedef last_error_scope class_type; 00126 00129 public: 00132 last_error_scope() stlsoft_throw_0() 00133 : m_dwErr(::GetLastError()) 00134 {} 00140 ss_explicit_k last_error_scope(ws_dword_t dwErr) stlsoft_throw_0() 00141 : m_dwErr(::GetLastError()) 00142 { 00143 ::SetLastError(dwErr); 00144 } 00147 ~last_error_scope() stlsoft_throw_0() 00148 { 00149 ::SetLastError(m_dwErr); 00150 } 00152 00155 public: 00158 operator ws_dword_t() const 00159 { 00160 return m_dwErr; 00161 } 00163 00164 // Members 00165 private: 00166 ws_dword_t m_dwErr; 00167 00168 // Not to be implemented 00169 private: 00170 last_error_scope(last_error_scope const&); 00171 last_error_scope& operator =(last_error_scope const&); 00172 }; 00173 00174 /* ////////////////////////////////////////////////////////////////////// */ 00175 00176 #ifndef _WINSTL_NO_NAMESPACE 00177 # if defined(_STLSOFT_NO_NAMESPACE) || \ 00178 defined(STLSOFT_DOCUMENTATION_SKIP_SECTION) 00179 } // namespace winstl 00180 # else 00181 } // namespace winstl_project 00182 } // namespace stlsoft 00183 # endif /* _STLSOFT_NO_NAMESPACE */ 00184 #endif /* !_WINSTL_NO_NAMESPACE */ 00185 00186 /* ////////////////////////////////////////////////////////////////////// */ 00187 00188 #endif /* WINSTL_INCL_WINSTL_ERROR_HPP_LAST_ERROR_SCOPE */ 00189 00190 /* ///////////////////////////// end of file //////////////////////////// */