00001 /* 00002 CLAW - a C++ Library Absolutely Wonderful 00003 00004 CLAW is a free library without any particular aim but being useful to 00005 anyone. 00006 00007 Copyright (C) 2005-2008 Julien Jorge 00008 00009 This library is free software; you can redistribute it and/or 00010 modify it under the terms of the GNU Lesser General Public 00011 License as published by the Free Software Foundation; either 00012 version 2.1 of the License, or (at your option) any later version. 00013 00014 This library is distributed in the hope that it will be useful, 00015 but WITHOUT ANY WARRANTY; without even the implied warranty of 00016 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00017 Lesser General Public License for more details. 00018 00019 You should have received a copy of the GNU Lesser General Public 00020 License along with this library; if not, write to the Free Software 00021 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 00022 00023 contact: julien_jorge@yahoo.fr 00024 */ 00030 #ifndef __CLAW_DYNAMIC_LIBRARY_TRAITS_WIN32_HPP__ 00031 #define __CLAW_DYNAMIC_LIBRARY_TRAITS_WIN32_HPP__ 00032 00033 #include <string> 00034 //#include <cstdarg> 00035 //#include <windef.h> 00036 //#include <winbase.h> 00037 #include <windows.h> 00038 00039 namespace claw 00040 { 00045 class dynamic_library_traits_win32 00046 { 00047 public: 00049 typedef HMODULE handle; 00050 00051 public: 00052 /*------------------------------------------------------------------------*/ 00058 static handle open( const std::string& name ) 00059 { 00060 return LoadLibrary( name.c_str() ); 00061 } // dynamic_library_traits_win32::open() 00062 00063 /*------------------------------------------------------------------------*/ 00069 static handle auto_open( const std::string& name ) 00070 { 00071 return LoadLibrary( name.c_str() ); 00072 } // dynamic_library_traits_win32::auto_open() 00073 00074 /*------------------------------------------------------------------------*/ 00079 static void close( handle h ) 00080 { 00081 FreeLibrary(h); 00082 } // dynamic_library_traits_win32::close() 00083 00084 /*------------------------------------------------------------------------*/ 00090 template<class T> 00091 static T get_symbol( handle h, const std::string& name ) 00092 { 00093 /* HACK : ISO standard doesn't allow to cast from a pointer to an object 00094 to a pointer to a function. */ 00095 T result; 00096 *(FARPROC*)(&result) = GetProcAddress( h, name.c_str() ); 00097 00098 return result; 00099 } // dynamic_library_traits_win32::get_symbol() 00100 00101 /*------------------------------------------------------------------------*/ 00107 static bool have_symbol( handle h, const std::string& name ) 00108 { 00109 return GetProcAddress( h, name.c_str() ) != NULL; 00110 } // dynamic_library_traits_win32::have_symbol() 00111 00112 /*------------------------------------------------------------------------*/ 00117 static bool valid_handle( handle h ) 00118 { 00119 return h != NULL; 00120 } // dynamic_library_traits_win32::valid_handle() 00121 00122 }; // class dynamic_library_traits_win32 00123 00124 typedef dynamic_library_traits_win32 dynamic_library_traits; 00125 } // namespace claw 00126 00127 #endif // __CLAW_DYNAMIC_LIBRARY_TRAITS_WIN32_HPP__