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1 /////////////////////////////////////////////////////////////////////////////
3 // Purpose: Preprocessor symbols
4 // Author: Vadim Zeitlin
6 // Licence: wxWindows licence
7 /////////////////////////////////////////////////////////////////////////////
12 @page page_cppconst Preprocessor symbols defined by wxWidgets
14 These are preprocessor symbols used in the wxWidgets source, grouped
15 by category (and sorted by alphabetical order inside each category).
16 All of these macros except for the @c wxUSE_XXX variety is defined if the
17 corresponding condition is @true and undefined if it isn't, so they should be
18 always tested using @ifdef_ and not @if_.
20 @li @ref page_cppconst_guisystem
21 @li @ref page_cppconst_os
22 @li @ref page_cppconst_cpu
23 @li @ref page_cppconst_hardware
24 @li @ref page_cppconst_compiler
25 @li @ref page_cppconst_featuretests
26 @li @ref page_cppconst_msvc_setup_h
27 @li @ref page_cppconst_miscellaneous
32 @section page_cppconst_guisystem GUI system
35 @itemdef{__WXBASE__, Only wxBase, no GUI features (same as @c wxUSE_GUI == 0)}
36 @itemdef{__WXCOCOA__, OS X using wxCocoa Port}
37 @itemdef{__WXDFB__, wxUniversal using DirectFB}
38 @itemdef{__WXWINCE__, Windows CE}
39 @itemdef{__WXGTK__, GTK+}
40 @itemdef{__WXGTK12__, GTK+ 1.2 or higher}
41 @itemdef{__WXGTK20__, GTK+ 2.0 or higher}
42 @itemdef{__WXGTK24__, GTK+ 2.4 or higher}
43 @itemdef{__WXGTK26__, GTK+ 2.6 or higher}
44 @itemdef{__WXGTK210__, GTK+ 2.10 or higher}
45 @itemdef{__WXMAC__, old define for Mac OS X}
46 @itemdef{__WXMOTIF__, Motif}
47 @itemdef{__WXMOTIF20__, Motif 2.0 or higher}
48 @itemdef{__WXMSW__, GUI using <a href="http://en.wikipedia.org/wiki/Windows_User">Windows Controls</a>}
49 @itemdef{__WXOSX__, any OS X}
50 @itemdef{__WXOSX_IPHONE__, OS X iPhone}
51 @itemdef{__WXOSX_CARBON__, Mac OS X using Carbon}
52 @itemdef{__WXOSX_COCOA__, Mac OS X using Cocoa}
53 @itemdef{__WXOSX_MAC__, Mac OS X (Carbon or Cocoa)}
54 @itemdef{__WXOSX_OR_COCOA__, Any Mac OS X port (wxOSX-Carbon, wxOSX-Cocoa or
56 @itemdef{__WXPM__, OS/2 native Presentation Manager}
57 @itemdef{__WXSTUBS__, Stubbed version ('template' wxWin implementation)}
58 @itemdef{__WXXT__, Xt; mutually exclusive with WX_MOTIF, not implemented in wxWidgets 2.x}
59 @itemdef{__WXX11__, wxX11 (__WXUNIVERSAL__ will be also defined)}
60 @itemdef{__WXWINE__, WINE (i.e. WIN32 on Unix)}
61 @itemdef{__WXUNIVERSAL__, wxUniversal port, always defined in addition
62 to one of the symbols above so this should be tested first.}
63 @itemdef{__X__, any X11-based GUI toolkit except GTK+}
66 There are two wxWidgets ports to Mac OS X. One of them, wxOSX is the successor of the
67 venerable wxMac, it currently exists in three versions: Carbon and Cocoa for the
68 desktop and a very early iPhone port. And there is the Cocoa port named wxCocoa
69 which has not been updated very actively since beginning 2008. To summarize:
71 @li If you want to test for wxOSX on the desktop, use
73 @li If you want to test for wxOSX on the iPhone, use
75 @li If you want to test for any GUI Mac port under OS X, use
76 @c __WXOSX_OR_COCOA__.
77 @li If you want to test for any port under Mac OS X, including, for
78 example, wxGTK and also wxBase, use @c __DARWIN__ (see below).
80 The convention is to use the @c __WX prefix for these
81 symbols, although this has not always been followed.
84 @section page_cppconst_os Operating systems
87 @itemdef{__APPLE__, any Mac OS version}
88 @itemdef{__AIX__, AIX}
89 @itemdef{__BSD__, Any *BSD system}
90 @itemdef{__CYGWIN__, Cygwin: Unix on Win32}
91 @itemdef{__DARWIN__, Mac OS X using the BSD Unix C library
92 (as opposed to using the Metrowerks MSL C/C++ library)}
93 @itemdef{__DATA_GENERAL__, DG-UX}
94 @itemdef{__FREEBSD__, FreeBSD}
95 @itemdef{__HPUX__, HP-UX (Unix)}
96 @itemdef{__GNU__, GNU Hurd}
97 @itemdef{__LINUX__, Linux}
98 @itemdef{__MACH__, Mach-O Architecture (Mac OS X only builds)}
99 @itemdef{__OSF__, OSF/1}
100 @itemdef{__QNX__, QNX Neutrino RTOS}
101 @itemdef{__SGI__, IRIX}
102 @itemdef{__SOLARIS__, Solaris}
103 @itemdef{__SUN__, Any Sun}
104 @itemdef{__SUNOS__, Sun OS}
105 @itemdef{__SVR4__, SystemV R4}
106 @itemdef{__SYSV__, SystemV generic}
107 @itemdef{__ULTRIX__, Ultrix}
108 @itemdef{__UNIX__, any Unix}
109 @itemdef{__UNIX_LIKE__, Unix, BeOS or VMS}
110 @itemdef{__VMS__, VMS}
111 @itemdef{__WINDOWS__, Any Windows platform, using any port (see also @c __WXMSW__)}
112 @itemdef{__WIN16__, Win16 API (not supported since wxWidgets 2.6)}
113 @itemdef{__WIN32__, Win32 API}
114 @itemdef{__WIN64__, Win64 (mostly same as Win32 but data type sizes are different)}
115 @itemdef{__WINE__, Wine}
116 @itemdef{_WIN32_WCE, Windows CE version}
121 @section page_cppconst_cpu Hardware architectures (CPU)
123 Note that not all of these symbols are always defined, it depends on the
127 @itemdef{__ALPHA__, DEC Alpha architecture}
128 @itemdef{__INTEL__, Intel i386 or compatible}
129 @itemdef{__IA64__, Intel 64 bit architecture}
130 @itemdef{__POWERPC__, Motorola Power PC}
135 @section page_cppconst_hardware Hardware type
138 @itemdef{__SMARTPHONE__, Generic mobile devices with phone buttons and a small display}
139 @itemdef{__PDA__, Personal digital assistant, usually with touch screen}
140 @itemdef{__HANDHELD__, Small but powerful computer, usually with a keyboard}
141 @itemdef{__POCKETPC__, Microsoft-powered PocketPC devices with touch-screen}
142 @itemdef{__WINCE_STANDARDSDK__, Microsoft-powered Windows CE devices, for generic Windows CE applications}
143 @itemdef{__WINCE_NET__, Microsoft-powered Windows CE .NET devices (_WIN32_WCE is 400 or greater)}
144 @itemdef{WIN32_PLATFORM_WFSP, Microsoft-powered smartphone}
149 @section page_cppconst_compiler Compilers
152 @itemdef{__BORLANDC__, Borland C++. The value of the macro corresponds
153 to the compiler version: 500 is 5.0.}
154 @itemdef{__DJGPP__, DJGPP}
155 @itemdef{__DIGITALMARS__, Digital Mars}
156 @itemdef{__EVC4__, Embedded Visual C++ 4 (can be only used for building wxWinCE)}
157 @itemdef{__GNUG__, Gnu C++ on any platform, see also wxCHECK_GCC_VERSION}
158 @itemdef{__GNUWIN32__, Gnu-Win32 compiler, see also wxCHECK_W32API_VERSION}
159 @itemdef{__MINGW32__, MinGW}
160 @itemdef{__MWERKS__, CodeWarrior MetroWerks compiler}
161 @itemdef{__SUNCC__, Sun CC, see also wxCHECK_SUNCC_VERSION}
162 @itemdef{__SYMANTECC__, Symantec C++}
163 @itemdef{__VISAGECPP__, IBM Visual Age (OS/2)}
164 @itemdef{__VISUALC__, Microsoft Visual C++, see also ::wxCHECK_VISUALC_VERSION.
165 The value of this macro corresponds to the compiler version:
166 @c 1020 for @c 4.2 (the first supported version), @c 1100 for
167 @c 5.0, @c 1200 for @c 6.0 and so on. For convenience, the symbols
168 __VISUALCn__ are also defined for each major compiler version from
169 5 to 11, i.e. you can use tests such @ifdef_ __VISUALC7__ to test
170 for compiler version being precisely 7.}
171 @itemdef{__XLC__, AIX compiler}
172 @itemdef{__WATCOMC__, Watcom C++. The value of this macro corresponds to
173 the compiler version, @c 1100 is @c 11.0 and @c 1200 is OpenWatcom.}
178 @section page_cppconst_featuretests Feature tests
180 Some library features may not be always available even if they were selected
181 by the user. To make it possible to check if this is the case, the library
182 predefines the symbols in the form @c wxHAS_FEATURE. Unlike
183 @c wxUSE_FEATURE symbols which are defined by the library user (directly
184 in @c setup.h or by running configure script) and which must be always
185 defined as either 0 or 1, the @c wxHAS symbols are only defined if
186 the corresponding feature is available and not defined at all otherwise.
188 Currently the following symbols exist:
191 @itemdef{wxHAS_3STATE_CHECKBOX, Defined if wxCheckBox supports wxCHK_3STATE
192 flag, i.e. is capable of showing three states and not only the usual two.
193 Currently defined for almost all ports.}
194 @itemdef{wxHAS_ATOMIC_OPS, Defined if wxAtomicInc() and wxAtomicDec() functions
195 have an efficient (CPU-specific) implementation. Notice that the functions
196 themselves are always available but can be prohibitively slow to use when
197 implemented in a generic way, using a critical section.}
198 @itemdef{wxHAS_BITMAPTOGGLEBUTTON, Defined in @c wx/tglbtn.h if
199 wxBitmapToggleButton class is available in addition to wxToggleButton.}
200 @itemdef{wxHAS_CONFIG_TEMPLATE_RW, Defined if the currently used compiler
201 supports template Read() and Write() methods in wxConfig.}
202 @itemdef{wxHAS_LARGE_FILES, Defined if wxFile supports files more than 4GB in
203 size (notice that you must include @c wx/filefn.h before testing for this
205 @itemdef{wxHAS_LARGE_FFILES, Defined if wxFFile supports files more than 4GB in
206 size (notice that you must include @c wx/filefn.h before testing for this
208 @itemdef{wxHAS_LONG_LONG_T_DIFFERENT_FROM_LONG, Defined if compiler supports a
209 64 bit integer type (available as @c wxLongLong_t) and this type is
210 different from long. Notice that, provided wxUSE_LONGLONG is not turned
211 off, some 64 bit type is always available to wxWidgets programs and this
212 symbol only indicates a presence of such primitive type. It is useful to
213 decide whether some function should be overloaded for both
214 <code>long</code> and <code>long long</code> types.}
215 @itemdef{wxHAS_MULTIPLE_FILEDLG_FILTERS, Defined if wxFileDialog supports multiple ('|'-separated) filters.}
216 @itemdef{wxHAS_IMAGES_IN_RESOURCES, Defined if <a href="http://en.wikipedia.org/wiki/Resource_(Windows)">
217 Windows resource files</a> or OS/2 resource files are available on the current platform.}
218 @itemdef{wxHAS_POWER_EVENTS, Defined if wxPowerEvent are ever generated on the current platform.}
219 @itemdef{wxHAS_RADIO_MENU_ITEMS,
220 Defined if the current port supports radio menu items (see wxMenu::AppendRadioItem).}
221 @itemdef{wxHAS_RAW_BITMAP, Defined if direct access to bitmap data using the classes in @c wx/rawbmp.h is supported.}
222 @itemdef{wxHAS_RAW_KEY_CODES, Defined if raw key codes (see wxKeyEvent::GetRawKeyCode are supported.}
223 @itemdef{wxHAS_REGEX_ADVANCED, Defined if advanced syntax is available in wxRegEx.}
224 @itemdef{wxHAS_TASK_BAR_ICON, Defined if wxTaskBarIcon is available on the current platform.}
229 @section page_cppconst_msvc_setup_h Libraries selection for MSVC setup.h
231 Microsoft Visual C++ users may use the special @c wx/setup.h file for this
232 compiler in @c include/msvc subdirectory. This file implicitly links in all the
233 wxWidgets libraries using MSVC-specific pragmas which usually is much more
234 convenient than manually specifying the libraries list in all of the project
235 configurations. However sometimes linking with all the libraries is not
236 desirable, for example because some of them were not built and this is where
237 the symbols in this section can be helpful: defining them allows to not link
238 with the corresponding library. The following symbols are honoured:
256 Notice that the base library is always included and the core is always included
257 for the GUI applications (i.e. those which don't define @c wxUSE_GUI as 0).
260 @section page_cppconst_miscellaneous Miscellaneous
263 @itemdef{__WXWINDOWS__,
264 always defined in wxWidgets applications, see also wxCHECK_VERSION}
265 @itemdef{wxDEBUG_LEVEL, defined as 1 by default, may be pre-defined as 0 before
266 including wxWidgets headers to disable generation of any code at all
267 for the assertion macros, see @ref overview_debugging}
268 @itemdef{__WXDEBUG__, defined if wxDEBUG_LEVEL is 1 or more, undefined otherwise}
270 if defined as 1, feature XXX is active, see the
271 @ref page_wxusedef (the symbols of this form are always defined,
272 use @if_ and not @ifdef_ to test for them)}
274 is defined if precompiled headers (PCH) are in use. In
275 this case, @c wx/wxprec.h includes @c wx/wx.h which, in turn,
276 includes a number of wxWidgets headers thus making it unnecessary to include
277 them explicitly. However if this is not defined, you do need to include them
278 and so the usual idiom which allows to support both cases is to first include
279 @c wx/wxprec.h} and then, inside @ifndef_ WX_PRECOMP, individual
281 @itemdef{_UNICODE and UNICODE, both are defined if wxUSE_UNICODE is set to @c 1}
283 this particular feature test macro is defined to 1
284 when compiling or using the library with the GUI features activated,
285 if it is defined as @c 0, only wxBase is available.}
287 only used by wxWidgets internally (defined as 1 when
288 building wxBase code, either as a standalone library or as part of the
289 monolithic wxWidgets library, defined as 0 when building GUI library only)}
290 @itemdef{wxNO_RTTI, is defined if the compiler RTTI support has been switched off}
291 @itemdef{wxNO_EXCEPTIONS,
292 is defined if the compiler support for C++ exceptions has been switched off}
293 @itemdef{wxNO_THREADS,
294 if this macro is defined, the compilation options
295 don't include compiler flags needed for multithreaded code generation. This
296 implies that wxUSE_THREADS is 0 and also that other (non-wx-based) threading
297 packages cannot be used neither.}
298 @itemdef{WXMAKINGDLL_XXX,
299 used internally and defined when building the
300 library @c XXX as a DLL; when a monolithic wxWidgets build is used only a
301 single @c WXMAKINGDLL symbol is defined}
303 defined when compiling code which uses wxWidgets as a DLL/shared library}
305 defined when building wxWidgets itself, whether as a static or shared library}