docs/doxygen/mainpages/const_cpp.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        const_cpp.h
   3 // Purpose:     Preprocessor symbols
   4 // Author:      Vadim Zeitlin
   5 // RCS-ID:      $Id$
   6 // Licence:     wxWindows license
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9
  10 /**
  11
  12 @page page_cppconst Preprocessor symbols defined by wxWidgets
  13
  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_.
  19
  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
  28
  29 <hr>
  30
  31
  32 @section page_cppconst_guisystem GUI system
  33
  34 @beginDefList
  35 @itemdef{__WINDOWS__, any Windows, you may also use __WXMSW__}
  36 @itemdef{__WIN16__, Win16 API (not supported since wxWidgets 2.6)}
  37 @itemdef{__WIN32__, Win32 API}
  38 @itemdef{__WXBASE__, Only wxBase, no GUI features (same as @c wxUSE_GUI == 0)}
  39 @itemdef{__WXCOCOA__, OS X using wxCocoa Port}
  40 @itemdef{__WXDFB__, wxUniversal using DirectFB}
  41 @itemdef{__WXWINCE__, Windows CE}
  42 @itemdef{__WXGTK__, GTK+}
  43 @itemdef{__WXGTK12__, GTK+ 1.2 or higher}
  44 @itemdef{__WXGTK20__, GTK+ 2.0 or higher}
  45 @itemdef{__WXGTK24__, GTK+ 2.4 or higher}
  46 @itemdef{__WXGTK26__, GTK+ 2.6 or higher}
  47 @itemdef{__WXGTK210__, GTK+ 2.10 or higher}
  48 @itemdef{__WXMAC__, old define for Mac OS X}
  49 @itemdef{__WXMOTIF__, Motif}
  50 @itemdef{__WXMOTIF20__, Motif 2.0 or higher}
  51 @itemdef{__WXMGL__, SciTech Soft MGL (__WXUNIVERSAL__ will be also defined)}
  52 @itemdef{__WXMSW__, Any Windows}
  53 @itemdef{__WXOSX__, any OS X}
  54 @itemdef{__WXOSX_IPHONE__, OS X iPhone}
  55 @itemdef{__WXOSX_CARBON__, Mac OS X using Carbon}
  56 @itemdef{__WXOSX_COCOA__, Mac OS X using Cocoa}
  57 @itemdef{__WXOSX_MAC__, Mac OS X (Carbon or Cocoa)}
  58 @itemdef{__WXOSX_OR_COCOA__, Any Mac OS X port (wxOSX-Carbon, wxOSX-Cocoa or
  59                         wxCocoa)}
  60 @itemdef{__WXPALMOS__, PalmOS}
  61 @itemdef{__WXPM__, OS/2 native Presentation Manager}
  62 @itemdef{__WXSTUBS__, Stubbed version ('template' wxWin implementation)}
  63 @itemdef{__WXXT__, Xt; mutually exclusive with WX_MOTIF, not implemented in wxWidgets 2.x}
  64 @itemdef{__WXX11__, wxX11 (__WXUNIVERSAL__ will be also defined)}
  65 @itemdef{__WXWINE__, WINE (i.e. WIN32 on Unix)}
  66 @itemdef{__WXUNIVERSAL__, wxUniversal port, always defined in addition
  67                         to one of the symbols above so this should be tested first.}
  68 @itemdef{__X__, any X11-based GUI toolkit except GTK+}
  69 @endDefList
  70
  71 There are two wxWidgets ports to Mac OS X. One of them, wxOSX is the successor of the
  72 venerable wxMac, it currently exists in three versions: Carbon and Cocoa for the
  73 desktop and a very early iPhone port. And there is the Cocoa port named wxCocoa
  74 which has not been updated very actively since beginning 2008. To summarize:
  75
  76 @li If you want to test for wxOSX on the desktop, use
  77     @c __WXOSX_MAC__.
  78 @li If you want to test for wxOSX on the iPhone, use
  79     @c __WXOSX_IPHONE__.
  80 @li If you want to test for any GUI Mac port under OS X, use
  81     @c __WXOSX_OR_COCOA__.
  82 @li If you want to test for any port under Mac OS X, including, for
  83     example, wxGTK and also wxBase, use @c __DARWIN__ (see below).
  84
  85 The convention is to use the @c __WX prefix for these
  86 symbols, although this has not always been followed.
  87
  88
  89 @section page_cppconst_os Operating systems
  90
  91 @beginDefList
  92 @itemdef{__APPLE__, any Mac OS version}
  93 @itemdef{__AIX__, AIX}
  94 @itemdef{__BSD__, Any *BSD system}
  95 @itemdef{__CYGWIN__, Cygwin: Unix on Win32}
  96 @itemdef{__DARWIN__, Mac OS X using the BSD Unix C library
  97                     (as opposed to using the Metrowerks MSL C/C++ library)}
  98 @itemdef{__DATA_GENERAL__, DG-UX}
  99 @itemdef{__DOS_GENERAL__, DOS (used with wxMGL only)}
 100 @itemdef{__FREEBSD__, FreeBSD}
 101 @itemdef{__HPUX__, HP-UX (Unix)}
 102 @itemdef{__GNU__, GNU Hurd}
 103 @itemdef{__LINUX__, Linux}
 104 @itemdef{__MACH__, Mach-O Architecture (Mac OS X only builds)}
 105 @itemdef{__OSF__, OSF/1}
 106 @itemdef{__PALMOS__, PalmOS}
 107 @itemdef{__SGI__, IRIX}
 108 @itemdef{__SOLARIS__, Solaris}
 109 @itemdef{__SUN__, Any Sun}
 110 @itemdef{__SUNOS__, Sun OS}
 111 @itemdef{__SVR4__, SystemV R4}
 112 @itemdef{__SYSV__, SystemV generic}
 113 @itemdef{__ULTRIX__, Ultrix}
 114 @itemdef{__UNIX__, any Unix}
 115 @itemdef{__UNIX_LIKE__, Unix, BeOS or VMS}
 116 @itemdef{__VMS__, VMS}
 117 @itemdef{__WINDOWS__, any Windows}
 118 @itemdef{__WINE__, Wine}
 119 @itemdef{_WIN32_WCE, Windows CE version}
 120 @endDefList
 121
 122
 123
 124 @section page_cppconst_cpu Hardware architectures (CPU)
 125
 126 Note that not all of these symbols are always defined, it depends on the
 127 compiler used.
 128
 129 @beginDefList
 130 @itemdef{__ALPHA__, DEC Alpha architecture}
 131 @itemdef{__INTEL__, Intel i386 or compatible}
 132 @itemdef{__IA64__, Intel 64 bit architecture}
 133 @itemdef{__POWERPC__, Motorola Power PC}
 134 @endDefList
 135
 136
 137
 138 @section page_cppconst_hardware Hardware type
 139
 140 @beginDefList
 141 @itemdef{__SMARTPHONE__, Generic mobile devices with phone buttons and a small display}
 142 @itemdef{__PDA__, Personal digital assistant, usually with touch screen}
 143 @itemdef{__HANDHELD__, Small but powerful computer, usually with a keyboard}
 144 @itemdef{__POCKETPC__, Microsoft-powered PocketPC devices with touch-screen}
 145 @itemdef{__WINCE_STANDARDSDK__, Microsoft-powered Windows CE devices, for generic Windows CE applications}
 146 @itemdef{__WINCE_NET__, Microsoft-powered Windows CE .NET devices (_WIN32_WCE is 400 or greater)}
 147 @itemdef{WIN32_PLATFORM_WFSP, Microsoft-powered smartphone}
 148 @endDefList
 149
 150
 151
 152 @section page_cppconst_compiler Compilers
 153
 154 @beginDefList
 155 @itemdef{__BORLANDC__, Borland C++. The value of the macro corresponds
 156                         to the compiler version: 500 is 5.0.}
 157 @itemdef{__DJGPP__, DJGPP}
 158 @itemdef{__DIGITALMARS__, Digital Mars}
 159 @itemdef{__EVC4__, Embedded Visual C++ 4 (can be only used for building wxWinCE)}
 160 @itemdef{__GNUG__, Gnu C++ on any platform, see also wxCHECK_GCC_VERSION}
 161 @itemdef{__GNUWIN32__, Gnu-Win32 compiler, see also wxCHECK_W32API_VERSION}
 162 @itemdef{__MINGW32__, MinGW}
 163 @itemdef{__MWERKS__, CodeWarrior MetroWerks compiler}
 164 @itemdef{__SUNCC__, Sun CC, see also wxCHECK_SUNCC_VERSION}
 165 @itemdef{__SYMANTECC__, Symantec C++}
 166 @itemdef{__VISAGECPP__, IBM Visual Age (OS/2)}
 167 @itemdef{__VISUALC__, Microsoft Visual C++, see also ::wxCHECK_VISUALC_VERSION.
 168                     The value of this macro corresponds to the compiler version:
 169                     @c 1020 for @c 4.2 (the first supported version), @c 1100 for
 170                     @c 5.0, @c 1200 for @c 6.0 and so on. For convenience, the symbols
 171                     __VISUALCn__ are also defined for each major compiler version from
 172                     5 to 9, i.e. you can use tests such @ifdef_ __VISUALC7__ to test
 173                     for compiler version being precisely 7.}
 174 @itemdef{__XLC__, AIX compiler}
 175 @itemdef{__WATCOMC__, Watcom C++. The value of this macro corresponds to
 176                     the compiler version, @c 1100 is @c 11.0 and @c 1200 is OpenWatcom.}
 177 @endDefList
 178
 179
 180
 181 @section page_cppconst_featuretests Feature tests
 182
 183 Some library features may not be always available even if they were selected
 184 by the user. To make it possible to check if this is the case, the library
 185 predefines the symbols in the form @c wxHAS_FEATURE. Unlike
 186 @c wxUSE_FEATURE symbols which are defined by the library user (directly
 187 in @c setup.h or by running configure script) and which must be always
 188 defined as either 0 or 1, the @c wxHAS symbols are only defined if
 189 the corresponding feature is available and not defined at all otherwise.
 190
 191 Currently the following symbols exist:
 192
 193 @beginDefList
 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_CONFIG_TEMPLATE_RW, Defined if the currently used compiler
 199     supports template Read() and Write() methods in wxConfig.}
 200 @itemdef{wxHAS_LARGE_FILES, Defined if wxFile supports files more than 4GB in
 201     size (notice that you must include @c wx/filefn.h before testing for this
 202     symbol).}
 203 @itemdef{wxHAS_LARGE_FFILES, Defined if wxFFile supports files more than 4GB in
 204     size (notice that you must include @c wx/filefn.h before testing for this
 205     symbol).}
 206 @itemdef{wxHAS_MULTIPLE_FILEDLG_FILTERS, Defined if wxFileDialog supports multiple ('|'-separated) filters.}
 207 @itemdef{wxHAS_POWER_EVENTS, Defined if wxPowerEvent are ever generated on the current platform.}
 208 @itemdef{wxHAS_RADIO_MENU_ITEMS,
 209         Defined if the current port supports radio menu items (see wxMenu::AppendRadioItem).}
 210 @itemdef{wxHAS_RAW_BITMAP, Defined if direct access to bitmap data using the classes in @c wx/rawbmp.h is supported.}
 211 @itemdef{wxHAS_RAW_KEY_CODES, Defined if raw key codes (see wxKeyEvent::GetRawKeyCode are supported.}
 212 @itemdef{wxHAS_REGEX_ADVANCED, Defined if advanced syntax is available in wxRegEx.}
 213 @itemdef{wxHAS_TASK_BAR_ICON, Defined if wxTaskBarIcon is available on the current platform.}
 214 @endDefList
 215
 216
 217
 218 @section page_cppconst_msvc_setup_h Libraries selection for MSVC setup.h
 219
 220 Microsoft Visual C++ users may use the special @c wx/setup.h file for this
 221 compiler in @c include/msvc subdirectory. This file implicitly links in all the
 222 wxWidgets libraries using MSVC-specific pragmas which usually is much more
 223 convenient than manually specifying the libraries list in all of the project
 224 configurations. However sometimes linking with all the libraries is not
 225 desirable, for example because some of them were not built and this is where
 226 the symbols in this section can be helpful: defining them allows to not link
 227 with the corresponding library. The following symbols are honoured:
 228     - wxNO_ADV_LIB
 229     - wxNO_AUI_LIB
 230     - wxNO_HTML_LIB
 231     - wxNO_MEDIA_LIB
 232     - wxNO_NET_LIB
 233     - wxNO_PROPGRID_LIB
 234     - wxNO_QA_LIB
 235     - wxNO_RICHTEXT_LIB
 236     - wxNO_XML_LIB
 237     - wxNO_REGEX_LIB
 238     - wxNO_EXPAT_LIB
 239     - wxNO_JPEG_LIB
 240     - wxNO_PNG_LIB
 241     - wxNO_TIFF_LIB
 242     - wxNO_ZLIB_LIB
 243
 244 Notice that the base library is always included and the core is always included
 245 for the GUI applications (i.e. those which don't define @c wxUSE_GUI as 0).
 246
 247
 248 @section page_cppconst_miscellaneous Miscellaneous
 249
 250 @beginDefList
 251 @itemdef{__WXWINDOWS__,
 252         always defined in wxWidgets applications, see also wxCHECK_VERSION}
 253 @itemdef{wxDEBUG_LEVEL, defined as 1 by default, may be pre-defined as 0 before
 254         including wxWidgets headers to disable generation of any code at all
 255         for the assertion macros, see @ref overview_debugging}
 256 @itemdef{__WXDEBUG__, defined if wxDEBUG_LEVEL is 1 or more, undefined otherwise}
 257 @itemdef{wxUSE_XXX,
 258         if defined as 1, feature XXX is active, see the
 259         @ref page_wxusedef (the symbols of this form are always defined,
 260         use @if_ and not @ifdef_ to test for them)}
 261 @itemdef{WX_PRECOMP,
 262         is defined if precompiled headers (PCH) are in use. In
 263         this case, @c wx/wxprec.h includes @c wx/wx.h which, in turn,
 264         includes a number of wxWidgets headers thus making it unnecessary to include
 265         them explicitly. However if this is not defined, you do need to include them
 266         and so the usual idiom which allows to support both cases is to first include
 267         @c wx/wxprec.h} and then, inside @ifndef_ WX_PRECOMP, individual
 268         headers you need.}
 269 @itemdef{_UNICODE and UNICODE, both are defined if wxUSE_UNICODE is set to @c 1}
 270 @itemdef{wxUSE_GUI,
 271         this particular feature test macro is defined to 1
 272         when compiling or using the library with the GUI features activated,
 273         if it is defined as @c 0, only wxBase is available.}
 274 @itemdef{wxUSE_BASE,
 275         only used by wxWidgets internally (defined as 1 when
 276         building wxBase code, either as a standalone library or as part of the
 277         monolithic wxWidgets library, defined as 0 when building GUI library only)}
 278 @itemdef{wxNO_RTTI, is defined if the compiler RTTI support has been switched off}
 279 @itemdef{wxNO_EXCEPTIONS,
 280         is defined if the compiler support for C++ exceptions has been switched off}
 281 @itemdef{wxNO_THREADS,
 282         if this macro is defined, the compilation options
 283         don't include compiler flags needed for multithreaded code generation. This
 284         implies that wxUSE_THREADS is 0 and also that other (non-wx-based) threading
 285         packages cannot be used neither.}
 286 @itemdef{WXMAKINGDLL_XXX,
 287         used internally and defined when building the
 288         library @c XXX as a DLL; when a monolithic wxWidgets build is used only a
 289         single @c WXMAKINGDLL symbol is defined}
 290 @itemdef{WXUSINGDLL,
 291         defined when compiling code which uses wxWidgets as a DLL/shared library}
 292 @itemdef{WXBUILDING,
 293         defined when building wxWidgets itself, whether as a static or shared library}
 294 @itemdef{wxNO_T,
 295         may be predefined to prevent the library from defining _T() macro}
 296 @endDefList
 297
 298 */