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[wxWidgets.git] / include / wx / dlimpexp.h
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1/*
2 * Name: wx/dlimpexp.h
3 * Purpose: Macros for declaring DLL-imported/exported functions
4 * Author: Vadim Zeitlin
5 * Modified by:
6 * Created: 16.10.2003 (extracted from wx/defs.h)
7 * RCS-ID: $Id$
77ffb593 8 * Copyright: (c) 2003 Vadim Zeitlin <vadim@wxwidgets.org>
65571936 9 * Licence: wxWindows licence
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10 */
11
12/*
13 This is a C file, not C++ one, do not use C++ comments here!
14 */
15
16#ifndef _WX_DLIMPEXP_H_
17#define _WX_DLIMPEXP_H_
18
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19#if defined(HAVE_VISIBILITY)
20# define WXEXPORT __attribute__ ((visibility("default")))
21# define WXIMPORT __attribute__ ((visibility("default")))
22#elif defined(__WINDOWS__)
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23 /*
24 __declspec works in BC++ 5 and later, Watcom C++ 11.0 and later as well
25 as VC++ and gcc
26 */
27# if defined(__VISUALC__) || defined(__BORLANDC__) || defined(__GNUC__) || defined(__WATCOMC__)
28# define WXEXPORT __declspec(dllexport)
29# define WXIMPORT __declspec(dllimport)
30# else /* compiler doesn't support __declspec() */
31# define WXEXPORT
32# define WXIMPORT
33# endif
34#elif defined(__WXPM__)
35# if defined (__WATCOMC__)
36# define WXEXPORT __declspec(dllexport)
37 /*
38 __declspec(dllimport) prepends __imp to imported symbols. We do NOT
39 want that!
40 */
41# define WXIMPORT
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42# elif defined(__EMX__)
43# define WXEXPORT
44# define WXIMPORT
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45# elif (!(defined(__VISAGECPP__) && (__IBMCPP__ < 400 || __IBMC__ < 400 )))
46# define WXEXPORT _Export
47# define WXIMPORT _Export
48# endif
49#elif defined(__WXMAC__) || defined(__WXCOCOA__)
50# ifdef __MWERKS__
51# define WXEXPORT __declspec(export)
52# define WXIMPORT __declspec(import)
53# endif
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54#elif defined(__CYGWIN__)
55# define WXEXPORT __declspec(dllexport)
56# define WXIMPORT __declspec(dllimport)
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57#endif
58
59/* for other platforms/compilers we don't anything */
60#ifndef WXEXPORT
61# define WXEXPORT
62# define WXIMPORT
63#endif
64
65/*
77ffb593 66 We support building wxWidgets as a set of several libraries but we don't
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67 support arbitrary combinations of libs/DLLs: either we build all of them as
68 DLLs (in which case WXMAKINGDLL is defined) or none (it isn't).
69
53a2db12 70 However we have a problem because we need separate WXDLLIMPEXP versions for
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71 different libraries as, for example, wxString class should be dllexported
72 when compiled in wxBase and dllimported otherwise, so we do define separate
73 WXMAKING/USINGDLL_XYZ constants for each component XYZ.
74 */
75#ifdef WXMAKINGDLL
76# if wxUSE_BASE
77# define WXMAKINGDLL_BASE
78# endif
79
80# define WXMAKINGDLL_NET
81# define WXMAKINGDLL_CORE
82# define WXMAKINGDLL_ADV
f5a9eef7 83# define WXMAKINGDLL_QA
0cc66b6c 84# define WXMAKINGDLL_HTML
0ae4d121 85# define WXMAKINGDLL_GL
0cc66b6c 86# define WXMAKINGDLL_XML
c846884b 87# define WXMAKINGDLL_XRC
5e4903f5 88# define WXMAKINGDLL_AUI
3b2cb431 89# define WXMAKINGDLL_RICHTEXT
c220a8ec 90# define WXMAKINGDLL_MEDIA
c079af66 91# define WXMAKINGDLL_STC
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92#endif /* WXMAKINGDLL */
93
94/*
53a2db12 95 WXDLLIMPEXP_CORE maps to export declaration when building the DLL, to import
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96 declaration if using it or to nothing at all if we don't use wxWin as DLL
97 */
98#ifdef WXMAKINGDLL_BASE
99# define WXDLLIMPEXP_BASE WXEXPORT
100# define WXDLLIMPEXP_DATA_BASE(type) WXEXPORT type
101#elif defined(WXUSINGDLL)
102# define WXDLLIMPEXP_BASE WXIMPORT
103# define WXDLLIMPEXP_DATA_BASE(type) WXIMPORT type
104#else /* not making nor using DLL */
105# define WXDLLIMPEXP_BASE
106# define WXDLLIMPEXP_DATA_BASE(type) type
107#endif
108
109#ifdef WXMAKINGDLL_NET
110# define WXDLLIMPEXP_NET WXEXPORT
111# define WXDLLIMPEXP_DATA_NET(type) WXEXPORT type
112#elif defined(WXUSINGDLL)
113# define WXDLLIMPEXP_NET WXIMPORT
114# define WXDLLIMPEXP_DATA_NET(type) WXIMPORT type
115#else /* not making nor using DLL */
116# define WXDLLIMPEXP_NET
117# define WXDLLIMPEXP_DATA_NET(type) type
118#endif
119
120#ifdef WXMAKINGDLL_CORE
121# define WXDLLIMPEXP_CORE WXEXPORT
122# define WXDLLIMPEXP_DATA_CORE(type) WXEXPORT type
123#elif defined(WXUSINGDLL)
124# define WXDLLIMPEXP_CORE WXIMPORT
125# define WXDLLIMPEXP_DATA_CORE(type) WXIMPORT type
126#else /* not making nor using DLL */
127# define WXDLLIMPEXP_CORE
128# define WXDLLIMPEXP_DATA_CORE(type) type
129#endif
130
131#ifdef WXMAKINGDLL_ADV
132# define WXDLLIMPEXP_ADV WXEXPORT
133# define WXDLLIMPEXP_DATA_ADV(type) WXEXPORT type
134#elif defined(WXUSINGDLL)
135# define WXDLLIMPEXP_ADV WXIMPORT
136# define WXDLLIMPEXP_DATA_ADV(type) WXIMPORT type
137#else /* not making nor using DLL */
138# define WXDLLIMPEXP_ADV
139# define WXDLLIMPEXP_DATA_ADV(type) type
140#endif
141
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142#ifdef WXMAKINGDLL_QA
143# define WXDLLIMPEXP_QA WXEXPORT
144# define WXDLLIMPEXP_DATA_QA(type) WXEXPORT type
145#elif defined(WXUSINGDLL)
146# define WXDLLIMPEXP_QA WXIMPORT
147# define WXDLLIMPEXP_DATA_QA(type) WXIMPORT type
148#else /* not making nor using DLL */
149# define WXDLLIMPEXP_QA
150# define WXDLLIMPEXP_DATA_QA(type) type
151#endif
152
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153#ifdef WXMAKINGDLL_HTML
154# define WXDLLIMPEXP_HTML WXEXPORT
155# define WXDLLIMPEXP_DATA_HTML(type) WXEXPORT type
156#elif defined(WXUSINGDLL)
157# define WXDLLIMPEXP_HTML WXIMPORT
158# define WXDLLIMPEXP_DATA_HTML(type) WXIMPORT type
159#else /* not making nor using DLL */
160# define WXDLLIMPEXP_HTML
161# define WXDLLIMPEXP_DATA_HTML(type) type
162#endif
163
164#ifdef WXMAKINGDLL_GL
165# define WXDLLIMPEXP_GL WXEXPORT
166#elif defined(WXUSINGDLL)
167# define WXDLLIMPEXP_GL WXIMPORT
168#else /* not making nor using DLL */
169# define WXDLLIMPEXP_GL
170#endif
171
172#ifdef WXMAKINGDLL_XML
173# define WXDLLIMPEXP_XML WXEXPORT
174#elif defined(WXUSINGDLL)
175# define WXDLLIMPEXP_XML WXIMPORT
176#else /* not making nor using DLL */
177# define WXDLLIMPEXP_XML
178#endif
179
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180#ifdef WXMAKINGDLL_XRC
181# define WXDLLIMPEXP_XRC WXEXPORT
182#elif defined(WXUSINGDLL)
183# define WXDLLIMPEXP_XRC WXIMPORT
184#else /* not making nor using DLL */
185# define WXDLLIMPEXP_XRC
186#endif
187
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188#ifdef WXMAKINGDLL_AUI
189# define WXDLLIMPEXP_AUI WXEXPORT
190#elif defined(WXUSINGDLL)
191# define WXDLLIMPEXP_AUI WXIMPORT
192#else /* not making nor using DLL */
193# define WXDLLIMPEXP_AUI
194#endif
195
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196#ifdef WXMAKINGDLL_RICHTEXT
197# define WXDLLIMPEXP_RICHTEXT WXEXPORT
198#elif defined(WXUSINGDLL)
199# define WXDLLIMPEXP_RICHTEXT WXIMPORT
200#else /* not making nor using DLL */
201# define WXDLLIMPEXP_RICHTEXT
202#endif
203
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204#ifdef WXMAKINGDLL_MEDIA
205# define WXDLLIMPEXP_MEDIA WXEXPORT
206#elif defined(WXUSINGDLL)
207# define WXDLLIMPEXP_MEDIA WXIMPORT
208#else /* not making nor using DLL */
209# define WXDLLIMPEXP_MEDIA
210#endif
211
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212#ifdef WXMAKINGDLL_STC
213 #define WXDLLIMPEXP_STC WXEXPORT
214#elif defined(WXUSINGDLL)
215 #define WXDLLIMPEXP_STC WXIMPORT
216#else /* not making nor using DLL */
217 #define WXDLLIMPEXP_STC
218#endif
219
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220/*
221 GCC warns about using __attribute__ (and also __declspec in mingw32 case) on
222 forward declarations while MSVC complains about forward declarations without
223 __declspec for the classes later declared with it, so we need a separate set
224 of macros for forward declarations to hide this difference:
225 */
226#if defined(HAVE_VISIBILITY) || (defined(__WINDOWS__) && defined(__GNUC__))
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227 #define WXDLLIMPEXP_FWD_BASE
228 #define WXDLLIMPEXP_FWD_NET
229 #define WXDLLIMPEXP_FWD_CORE
230 #define WXDLLIMPEXP_FWD_ADV
231 #define WXDLLIMPEXP_FWD_QA
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232 #define WXDLLIMPEXP_FWD_HTML
233 #define WXDLLIMPEXP_FWD_GL
234 #define WXDLLIMPEXP_FWD_XML
235 #define WXDLLIMPEXP_FWD_XRC
236 #define WXDLLIMPEXP_FWD_AUI
237 #define WXDLLIMPEXP_FWD_RICHTEXT
238 #define WXDLLIMPEXP_FWD_MEDIA
239 #define WXDLLIMPEXP_FWD_STC
240#else
241 #define WXDLLIMPEXP_FWD_BASE WXDLLIMPEXP_BASE
242 #define WXDLLIMPEXP_FWD_NET WXDLLIMPEXP_NET
243 #define WXDLLIMPEXP_FWD_CORE WXDLLIMPEXP_CORE
244 #define WXDLLIMPEXP_FWD_ADV WXDLLIMPEXP_ADV
245 #define WXDLLIMPEXP_FWD_QA WXDLLIMPEXP_QA
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246 #define WXDLLIMPEXP_FWD_HTML WXDLLIMPEXP_HTML
247 #define WXDLLIMPEXP_FWD_GL WXDLLIMPEXP_GL
248 #define WXDLLIMPEXP_FWD_XML WXDLLIMPEXP_XML
249 #define WXDLLIMPEXP_FWD_XRC WXDLLIMPEXP_XRC
250 #define WXDLLIMPEXP_FWD_AUI WXDLLIMPEXP_AUI
251 #define WXDLLIMPEXP_FWD_RICHTEXT WXDLLIMPEXP_RICHTEXT
252 #define WXDLLIMPEXP_FWD_MEDIA WXDLLIMPEXP_MEDIA
253 #define WXDLLIMPEXP_FWD_STC WXDLLIMPEXP_STC
254#endif
b5dbe15d 255
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256/* for backwards compatibility, define suffix-less versions too */
257#define WXDLLEXPORT WXDLLIMPEXP_CORE
258#define WXDLLEXPORT_DATA WXDLLIMPEXP_DATA_CORE
259
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260/*
261 MSVC up to 6.0 needs to be explicitly told to export template instantiations
262 used by the DLL clients, use this macro to do it like this:
263
264 template <typename T> class Foo { ... };
265 WXDLLIMPEXP_TEMPLATE_INSTANCE_BASE( Foo<int> )
266
16361ec9 267 (notice that currently we only need this for wxBase and wxCore libraries)
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268 */
269#if defined(__VISUALC__) && (__VISUALC__ <= 1200)
270 #ifdef WXMAKINGDLL_BASE
271 #define WXDLLIMPEXP_TEMPLATE_INSTANCE_BASE(decl) \
272 template class WXDLLIMPEXP_BASE decl;
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273 #define WXDLLIMPEXP_TEMPLATE_INSTANCE_CORE(decl) \
274 template class WXDLLIMPEXP_CORE decl;
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275 #else
276 /*
277 We need to disable this warning when using this macro, as
53a2db12 278 recommended by Microsoft itself:
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279
280 http://support.microsoft.com/default.aspx?scid=kb%3ben-us%3b168958
281 */
282 #pragma warning(disable:4231)
283
284 #define WXDLLIMPEXP_TEMPLATE_INSTANCE_BASE(decl) \
285 extern template class WXDLLIMPEXP_BASE decl;
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286 #define WXDLLIMPEXP_TEMPLATE_INSTANCE_CORE(decl) \
287 extern template class WXDLLIMPEXP_CORE decl;
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288 #endif
289#else /* not VC <= 6 */
290 #define WXDLLIMPEXP_TEMPLATE_INSTANCE_BASE(decl)
16361ec9 291 #define WXDLLIMPEXP_TEMPLATE_INSTANCE_CORE(decl)
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292#endif /* VC6/others */
293
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294#endif /* _WX_DLIMPEXP_H_ */
295