claw 1.9.0
 
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dynamic_library_traits_win32.hpp
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1/*
2 CLAW - a C++ Library Absolutely Wonderful
3
4 CLAW is a free library without any particular aim but being useful to
5 anyone.
6
7 Copyright (C) 2005-2011 Julien Jorge
8
9 This library is free software; you can redistribute it and/or
10 modify it under the terms of the GNU Lesser General Public
11 License as published by the Free Software Foundation; either
12 version 2.1 of the License, or (at your option) any later version.
13
14 This library is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 Lesser General Public License for more details.
18
19 You should have received a copy of the GNU Lesser General Public
20 License along with this library; if not, write to the Free Software
21 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22
23 contact: julien.jorge@stuff-o-matic.com
24*/
30#ifndef __CLAW_DYNAMIC_LIBRARY_TRAITS_WIN32_HPP__
31#define __CLAW_DYNAMIC_LIBRARY_TRAITS_WIN32_HPP__
32
33#include <string>
34//#include <cstdarg>
35//#include <windef.h>
36//#include <winbase.h>
37#include <windows.h>
38
39namespace claw
40{
46 {
47 public:
49 typedef HMODULE handle;
50
51 public:
57 static handle open(const std::string& name)
58 {
59 return LoadLibrary(name.c_str());
60 }
61
67 static handle auto_open(const std::string& name)
68 {
69 return LoadLibrary(name.c_str());
70 }
71
76 static void close(handle h)
77 {
78 FreeLibrary(h);
79 }
80
86 template <class T>
87 static T get_symbol(handle h, const std::string& name)
88 {
89 /* HACK : ISO standard doesn't allow to cast from a pointer to an object
90 to a pointer to a function. */
91 T result;
92 *(FARPROC*)(&result) = GetProcAddress(h, name.c_str());
93
94 return result;
95 }
96
102 static bool have_symbol(handle h, const std::string& name)
103 {
104 return GetProcAddress(h, name.c_str()) != NULL;
105 }
106
111 static bool valid_handle(handle h)
112 {
113 return h != NULL;
114 }
115
116 }; // class dynamic_library_traits_win32
117
118 typedef dynamic_library_traits_win32 dynamic_library_traits;
119}
120
121#endif // __CLAW_DYNAMIC_LIBRARY_TRAITS_WIN32_HPP__
Microsoft Windows interface for using dynamic libraries.
HMODULE handle
Type of the system handle to the library.
static void close(handle h)
Close a library.
static bool have_symbol(handle h, const std::string &name)
Tell if a symbol is in the library.
static handle open(const std::string &name)
Open a library.
static T get_symbol(handle h, const std::string &name)
Get a symbol from a library.
static handle auto_open(const std::string &name)
Open the current program.
static bool valid_handle(handle h)
Tell if an handle is a valid library handle.
Common interface for platform specific methods needed for using dynamic library.
This is the main namespace.