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 Cocoa API}
  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{__WXMOTIF__, Motif}
  49 @itemdef{__WXMOTIF20__, Motif 2.0 or higher}
  50 @itemdef{__WXMAC__, Mac OS all targets}
  51 @itemdef{__WXMAC_CLASSIC__, MacOS for Classic}
  52 @itemdef{__WXMAC_CARBON__, MacOS for Carbon CFM (running under Classic or OSX)
  53                             or true OS X Mach-O Builds}
  54 @itemdef{__WXMAC_OSX__, MacOS X Carbon Mach-O Builds}
  55 @itemdef{__WXMGL__, SciTech Soft MGL (__WXUNIVERSAL__ will be also defined)}
  56 @itemdef{__WXMSW__, Any Windows}
  57 @itemdef{__WXOSX__, Any Mac OS X port (either Carbon or Cocoa)}
  58 @itemdef{__WXPALMOS__, PalmOS}
  59 @itemdef{__WXPM__, OS/2 native Presentation Manager}
  60 @itemdef{__WXSTUBS__, Stubbed version ('template' wxWin implementation)}
  61 @itemdef{__WXXT__, Xt; mutually exclusive with WX_MOTIF, not implemented in wxWidgets 2.x}
  62 @itemdef{__WXX11__, wxX11 (__WXUNIVERSAL__ will be also defined)}
  63 @itemdef{__WXWINE__, WINE (i.e. WIN32 on Unix)}
  64 @itemdef{__WXUNIVERSAL__, wxUniversal port, always defined in addition
  65                         to one of the symbols above so this should be tested first.}
  66 @itemdef{__X__, any X11-based GUI toolkit except GTK+}
  67 @endDefList
  68
  69 There are two wxWidgets ports to Mac OS. One of them, wxMac, exists in two versions:
  70 Classic and Carbon. The Classic version is the only one to work on Mac OS version 8.
  71 The Carbon version may be built either as CFM or Mach-O (binary format, like ELF)
  72 and the former may run under OS 9 while the latter only runs under OS X.
  73 Finally, there is a new Cocoa port which can only be used under OS X. To
  74 summarize:
  75
  76 @li If you want to test for all Mac platforms, classic and OS X, you
  77     should test both @c __WXMAC__ and @c __WXCOCOA__.
  78 @li If you want to test for any GUI Mac port under OS X, use
  79     @c __WXOSX__.
  80 @li If you want to test for any port under Mac OS X, including, for
  81     example, wxGTK and also wxBase, use @c __DARWIN__ (see below).
  82
  83 The convention is to use the @c __WX prefix for these
  84 symbols, although this has not always been followed.
  85
  86
  87 @section page_cppconst_os Operating systems
  88
  89 @beginDefList
  90 @itemdef{__APPLE__, any Mac OS version}
  91 @itemdef{__AIX__, AIX}
  92 @itemdef{__BSD__, Any *BSD system}
  93 @itemdef{__CYGWIN__, Cygwin: Unix on Win32}
  94 @itemdef{__DARWIN__, Mac OS X using the BSD Unix C library
  95                     (as opposed to using the Metrowerks MSL C/C++ library)}
  96 @itemdef{__DATA_GENERAL__, DG-UX}
  97 @itemdef{__DOS_GENERAL__, DOS (used with wxMGL only)}
  98 @itemdef{__FREEBSD__, FreeBSD}
  99 @itemdef{__HPUX__, HP-UX (Unix)}
 100 @itemdef{__GNU__, GNU Hurd}
 101 @itemdef{__LINUX__, Linux}
 102 @itemdef{__MACH__, Mach-O Architecture (Mac OS X only builds)}
 103 @itemdef{__OSF__, OSF/1}
 104 @itemdef{__PALMOS__, PalmOS}
 105 @itemdef{__SGI__, IRIX}
 106 @itemdef{__SOLARIS__, Solaris}
 107 @itemdef{__SUN__, Any Sun}
 108 @itemdef{__SUNOS__, Sun OS}
 109 @itemdef{__SVR4__, SystemV R4}
 110 @itemdef{__SYSV__, SystemV generic}
 111 @itemdef{__ULTRIX__, Ultrix}
 112 @itemdef{__UNIX__, any Unix}
 113 @itemdef{__UNIX_LIKE__, Unix, BeOS or VMS}
 114 @itemdef{__VMS__, VMS}
 115 @itemdef{__WINDOWS__, any Windows}
 116 @itemdef{__WINE__, Wine}
 117 @endDefList
 118
 119
 120
 121 @section page_cppconst_cpu Hardware architectures (CPU)
 122
 123 Note that not all of these symbols are always defined, it depends on the
 124 compiler used.
 125
 126 @beginDefList
 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}
 131 @endDefList
 132
 133
 134
 135 @section page_cppconst_hardware Hardware type
 136
 137 @beginDefList
 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}
 145 @endDefList
 146
 147
 148
 149 @section page_cppconst_compiler Compilers
 150
 151 @beginDefList
 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{__GNUG__, Gnu C++ on any platform, see also wxCHECK_GCC_VERSION}
 157 @itemdef{__GNUWIN32__, Gnu-Win32 compiler, see also wxCHECK_W32API_VERSION}
 158 @itemdef{__MINGW32__, MinGW}
 159 @itemdef{__MWERKS__, CodeWarrior MetroWerks compiler}
 160 @itemdef{__SUNCC__, Sun CC, see also wxCHECK_SUNCC_VERSION}
 161 @itemdef{__SYMANTECC__, Symantec C++}
 162 @itemdef{__VISAGECPP__, IBM Visual Age (OS/2)}
 163 @itemdef{__VISUALC__, Microsoft Visual C++, see also wxCHECK_VISUALC_VERSION.
 164                     The value of this macro corresponds to the compiler version:
 165                     @c 1020 for @c 4.2 (the first supported version), @c 1100 for
 166                     @c 5.0, @c 1200 for @c 6.0 and so on. For convenience, the symbols
 167                     __VISUALCn__ are also defined for each major compiler version from
 168                     5 to 9, i.e. you can use tests such @ifdef_ __VISUALC7__ to test
 169                     for compiler version being precisely 7.}
 170 @itemdef{__XLC__, AIX compiler}
 171 @itemdef{__WATCOMC__, Watcom C++. The value of this macro corresponds to
 172                     the compiler version, @c 1100 is @c 11.0 and @c 1200 is OpenWatcom.}
 173 @itemdef{_WIN32_WCE, Windows CE version}
 174 @endDefList
 175
 176
 177
 178 @section page_cppconst_featuretests Feature tests
 179
 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.
 187
 188 Currently the following symbols exist:
 189
 190 @beginDefList
 191 @itemdef{wxHAS_ATOMIC_OPS, Defined if wxAtomicInc() and wxAtomicDec() functions
 192     have an efficient (CPU-specific) implementation. Notice that the functions
 193     themselves are always available but can be prohibitively slow to use when
 194     implemented in a generic way, using a critical section.}
 195 @itemdef{wxHAS_LARGE_FILES, Defined if wxFile supports files more than 4GB in size.}
 196 @itemdef{wxHAS_LARGE_FFILES, Defined if wxFFile supports files more than 4GB in size.}
 197 @itemdef{wxHAS_POWER_EVENTS, Defined if wxPowerEvent are ever generated on the current platform.}
 198 @itemdef{wxHAS_RADIO_MENU_ITEMS,
 199         Defined if the current port supports radio menu items (see wxMenu::AppendRadioItem).}
 200 @itemdef{wxHAS_RAW_BITMAP, Defined if direct access to bitmap data using the classes in @c wx/rawbmp.h is supported.}
 201 @itemdef{wxHAS_RAW_KEY_CODES, Defined if raw key codes (see wxKeyEvent::GetRawKeyCode are supported.}
 202 @itemdef{wxHAS_REGEX_ADVANCED, Defined if advanced syntax is available in wxRegEx.}
 203 @itemdef{wxHAS_TASK_BAR_ICON, Defined if wxTaskBarIcon is available on the current platform.}
 204 @endDefList
 205
 206
 207
 208 @section page_cppconst_msvc_setup_h Libraries selection for MSVC setup.h
 209
 210 Microsoft Visual C++ users may use the special @c wx/setup.h file for this
 211 compiler in @c include/msvc subdirectory. This file implicitly links in all the
 212 wxWidgets libraries using MSVC-specific pragmas which usually is much more
 213 convenient than manually specifying the libraries list in all of the project
 214 configurations. However sometimes linking with all the libraries is not
 215 desirable, for example because some of them were not built and this is where
 216 the symbols in this section can be helpful: defining them allows to not link
 217 with the corresponding library. The following symbols are honoured:
 218     - wxNO_ADV_LIB
 219     - wxNO_AUI_LIB
 220     - wxNO_HTML_LIB
 221     - wxNO_MEDIA_LIB
 222     - wxNO_NET_LIB
 223     - wxNO_QA_LIB
 224     - wxNO_RICHTEXT_LIB
 225     - wxNO_XML_LIB
 226     - wxNO_REGEX_LIB
 227     - wxNO_EXPAT_LIB
 228     - wxNO_JPEG_LIB
 229     - wxNO_PNG_LIB
 230     - wxNO_TIFF_LIB
 231     - wxNO_ZLIB_LIB
 232
 233 Notice that the base library is always included and the core is always included
 234 for the GUI applications (i.e. those which don't define @c wxUSE_GUI as 0).
 235
 236
 237 @section page_cppconst_miscellaneous Miscellaneous
 238
 239 @beginDefList
 240 @itemdef{__WXWINDOWS__,
 241         always defined in wxWidgets applications, see also wxCHECK_VERSION}
 242 @itemdef{__WXDEBUG__, defined in debug mode, undefined in release mode}
 243 @itemdef{wxUSE_XXX,
 244         if defined as 1, feature XXX is active, see the
 245         @ref page_wxusedef (the symbols of this form are always defined,
 246         use @if_ and not @ifdef_ to test for them)}
 247 @itemdef{WX_PRECOMP,
 248         is defined if precompiled headers (PCH) are in use. In
 249         this case, @c wx/wxprec.h includes @c wx/wx.h which, in turn,
 250         includes a number of wxWidgets headers thus making it unnecessary to include
 251         them explicitly. However if this is not defined, you do need to include them
 252         and so the usual idiom which allows to support both cases is to first include
 253         @c wx/wxprec.h} and then, inside @ifndef_ WX_PRECOMP, individual
 254         headers you need.}
 255 @itemdef{_UNICODE and UNICODE, both are defined if wxUSE_UNICODE is set to @c 1}
 256 @itemdef{wxUSE_GUI,
 257         this particular feature test macro is defined to 1
 258         when compiling or using the library with the GUI features activated,
 259         if it is defined as @c 0, only wxBase is available.}
 260 @itemdef{wxUSE_BASE,
 261         only used by wxWidgets internally (defined as 1 when
 262         building wxBase code, either as a standalone library or as part of the
 263         monolithic wxWidgets library, defined as 0 when building GUI library only)}
 264 @itemdef{wxNO_RTTI, is defined if the compiler RTTI support has been switched off}
 265 @itemdef{wxNO_EXCEPTIONS,
 266         is defined if the compiler support for C++ exceptions has been switched off}
 267 @itemdef{wxNO_THREADS,
 268         if this macro is defined, the compilation options
 269         don't include compiler flags needed for multithreaded code generation. This
 270         implies that wxUSE_THREADS is 0 and also that other (non-wx-based) threading
 271         packages cannot be used neither.}
 272 @itemdef{WXMAKINGDLL_XXX,
 273         used internally and defined when building the
 274         library @c XXX as a DLL; when a monolithic wxWidgets build is used only a
 275         single @c WXMAKINGDLL symbol is defined}
 276 @itemdef{WXUSINGDLL,
 277         defined when compiling code which uses wxWidgets as a DLL/shared library}
 278 @itemdef{WXBUILDING,
 279         defined when building wxWidgets itself, whether as a static or shared library}
 280 @endDefList
 281
 282 */