1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2006 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
9
10 This library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19 Sam Lantinga
20 slouken@libsdl.org
21 */
22 #include "SDL_config.h"
23
24 #ifdef SDL_LOADSO_WIN32
25
26 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
27 /* System dependent library loading routines */
28
29 #define WIN32_LEAN_AND_MEAN
30 #include <windows.h>
31
32 #include "SDL_loadso.h"
33
SDL_LoadObject(const char * sofile)34 void *SDL_LoadObject(const char *sofile)
35 {
36 void *handle = NULL;
37 const char *loaderror = "Unknown error";
38
39 #if defined(_WIN32_WCE)
40 char errbuf[512];
41
42 wchar_t *errbuf_t = SDL_malloc(512 * sizeof(wchar_t));
43 wchar_t *sofile_t = SDL_malloc((MAX_PATH+1) * sizeof(wchar_t));
44
45 MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, sofile, -1, sofile_t, MAX_PATH);
46 handle = (void *)LoadLibrary(sofile_t);
47
48 /* Generate an error message if all loads failed */
49 if ( handle == NULL ) {
50 FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
51 FORMAT_MESSAGE_FROM_SYSTEM),
52 NULL, GetLastError(),
53 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
54 errbuf_t, SDL_arraysize(errbuf), NULL);
55 WideCharToMultiByte(CP_ACP, 0, errbuf_t, -1, errbuf, 511, NULL, NULL);
56 loaderror = errbuf;
57 }
58
59 SDL_free(sofile_t);
60 SDL_free(errbuf_t);
61
62 #else /*if defined(__WIN32__)*/
63 char errbuf[512];
64
65 handle = (void *)LoadLibrary(sofile);
66
67 /* Generate an error message if all loads failed */
68 if ( handle == NULL ) {
69 FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
70 FORMAT_MESSAGE_FROM_SYSTEM),
71 NULL, GetLastError(),
72 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
73 errbuf, SDL_arraysize(errbuf), NULL);
74 loaderror = errbuf;
75 }
76 #endif
77
78 if ( handle == NULL ) {
79 SDL_SetError("Failed loading %s: %s", sofile, loaderror);
80 }
81 return(handle);
82 }
83
SDL_LoadFunction(void * handle,const char * name)84 void *SDL_LoadFunction(void *handle, const char *name)
85 {
86 void *symbol = NULL;
87 const char *loaderror = "Unknown error";
88
89 #if defined(_WIN32_WCE)
90 char errbuf[512];
91 int length = SDL_strlen(name);
92
93 wchar_t *name_t = SDL_malloc((length + 1) * sizeof(wchar_t));
94 wchar_t *errbuf_t = SDL_malloc(512 * sizeof(wchar_t));
95
96 MultiByteToWideChar(CP_ACP, MB_PRECOMPOSED, name, -1, name_t, length);
97
98 symbol = (void *)GetProcAddress((HMODULE)handle, name_t);
99 if ( symbol == NULL ) {
100 FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
101 FORMAT_MESSAGE_FROM_SYSTEM),
102 NULL, GetLastError(),
103 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
104 errbuf_t, SDL_arraysize(errbuf), NULL);
105 WideCharToMultiByte(CP_ACP, 0, errbuf_t, -1, errbuf, 511, NULL, NULL);
106 loaderror = errbuf;
107 }
108
109 SDL_free(name_t);
110 SDL_free(errbuf_t);
111
112 #else /*if defined(WIN32)*/
113 char errbuf[512];
114
115 symbol = (void *)GetProcAddress((HMODULE)handle, name);
116 if ( symbol == NULL ) {
117 FormatMessage((FORMAT_MESSAGE_IGNORE_INSERTS |
118 FORMAT_MESSAGE_FROM_SYSTEM),
119 NULL, GetLastError(),
120 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
121 errbuf, SDL_arraysize(errbuf), NULL);
122 loaderror = errbuf;
123 }
124 #endif
125
126 if ( symbol == NULL ) {
127 SDL_SetError("Failed loading %s: %s", name, loaderror);
128 }
129 return(symbol);
130 }
131
SDL_UnloadObject(void * handle)132 void SDL_UnloadObject(void *handle)
133 {
134 if ( handle != NULL ) {
135 FreeLibrary((HMODULE)handle);
136 }
137 }
138
139 #endif /* SDL_LOADSO_WIN32 */
140