These are preprocessor symbols used in the wxWidgets source, grouped by category (and sorted by alphabetical order inside each category).
All of these macros except for the wxUSE_XXX
variety is defined if the corresponding condition is true and undefined if it isn't, so they should be always tested using #ifdef and not #if.
__WINDOWS__ | any Windows, you may also use __WXMSW__ |
__WIN16__ | Win16 API (not supported since wxWidgets 2.6) |
__WIN32__ | Win32 API |
__WXBASE__ | Only wxBase, no GUI features (same as |
__WXCOCOA__ | OS X using wxCocoa Port |
__WXDFB__ | wxUniversal using DirectFB |
__WXWINCE__ | Windows CE |
__WXGTK__ | GTK+ |
__WXGTK12__ | GTK+ 1.2 or higher |
__WXGTK20__ | GTK+ 2.0 or higher |
__WXGTK24__ | GTK+ 2.4 or higher |
__WXGTK26__ | GTK+ 2.6 or higher |
__WXGTK210__ | GTK+ 2.10 or higher |
__WXMAC__ | old define for Mac OS X |
__WXMOTIF__ | Motif |
__WXMOTIF20__ | Motif 2.0 or higher |
__WXMGL__ | SciTech Soft MGL (__WXUNIVERSAL__ will be also defined) |
__WXMSW__ | Any Windows |
__WXOSX__ | any OS X |
__WXOSX_IPHONE__ | OS X iPhone |
__WXOSX_CARBON__ | Mac OS X using Carbon |
__WXOSX_COCOA__ | Mac OS X using Cocoa |
__WXOSX_MAC__ | Mac OS X (Carbon or Cocoa) |
__WXOSX_OR_COCOA__ | Any Mac OS X port (wxOSX-Carbon, wxOSX-Cocoa or wxCocoa) |
__WXPALMOS__ | PalmOS |
__WXPM__ | OS/2 native Presentation Manager |
__WXSTUBS__ | Stubbed version ('template' wxWin implementation) |
__WXXT__ | Xt; mutually exclusive with WX_MOTIF, not implemented in wxWidgets 2.x |
__WXX11__ | wxX11 (__WXUNIVERSAL__ will be also defined) |
__WXWINE__ | WINE (i.e. WIN32 on Unix) |
__WXUNIVERSAL__ | wxUniversal port, always defined in addition to one of the symbols above so this should be tested first. |
__X__ | any X11-based GUI toolkit except GTK+ |
There are two wxWidgets ports to Mac OS X. One of them, wxOSX is the successor of the venerable wxMac, it currently exists in three versions: Carbon and Cocoa for the desktop and a very early iPhone port. And there is the Cocoa port named wxCocoa which has not been updated very actively since beginning 2008. To summarize:
__WXOSX_MAC__
. __WXOSX_IPHONE__
. __WXOSX_OR_COCOA__
. __DARWIN__
(see below).The convention is to use the __WX
prefix for these symbols, although this has not always been followed.
__APPLE__ | any Mac OS version |
__AIX__ | AIX |
__BSD__ | Any *BSD system |
__CYGWIN__ | Cygwin: Unix on Win32 |
__DARWIN__ | Mac OS X using the BSD Unix C library (as opposed to using the Metrowerks MSL C/C++ library) |
__DATA_GENERAL__ | DG-UX |
__DOS_GENERAL__ | DOS (used with wxMGL only) |
__FREEBSD__ | FreeBSD |
__HPUX__ | HP-UX (Unix) |
__GNU__ | GNU Hurd |
__LINUX__ | Linux |
__MACH__ | Mach-O Architecture (Mac OS X only builds) |
__OSF__ | OSF/1 |
__PALMOS__ | PalmOS |
__SGI__ | IRIX |
__SOLARIS__ | Solaris |
__SUN__ | Any Sun |
__SUNOS__ | Sun OS |
__SVR4__ | SystemV R4 |
__SYSV__ | SystemV generic |
__ULTRIX__ | Ultrix |
__UNIX__ | any Unix |
__UNIX_LIKE__ | Unix, BeOS or VMS |
__VMS__ | VMS |
__WINDOWS__ | any Windows |
__WINE__ | Wine |
_WIN32_WCE | Windows CE version |
Note that not all of these symbols are always defined, it depends on the compiler used.
__ALPHA__ | DEC Alpha architecture |
__INTEL__ | Intel i386 or compatible |
__IA64__ | Intel 64 bit architecture |
__POWERPC__ | Motorola Power PC |
__SMARTPHONE__ | Generic mobile devices with phone buttons and a small display |
__PDA__ | Personal digital assistant, usually with touch screen |
__HANDHELD__ | Small but powerful computer, usually with a keyboard |
__POCKETPC__ | Microsoft-powered PocketPC devices with touch-screen |
__WINCE_STANDARDSDK__ | Microsoft-powered Windows CE devices, for generic Windows CE applications |
__WINCE_NET__ | Microsoft-powered Windows CE .NET devices (_WIN32_WCE is 400 or greater) |
WIN32_PLATFORM_WFSP | Microsoft-powered smartphone |
__BORLANDC__ | Borland C++. The value of the macro corresponds to the compiler version: 500 is 5.0. |
__DJGPP__ | DJGPP |
__DIGITALMARS__ | Digital Mars |
__EVC4__ | Embedded Visual C++ 4 (can be only used for building wxWinCE) |
__GNUG__ | Gnu C++ on any platform, see also wxCHECK_GCC_VERSION |
__GNUWIN32__ | Gnu-Win32 compiler, see also wxCHECK_W32API_VERSION |
__MINGW32__ | MinGW |
__MWERKS__ | CodeWarrior MetroWerks compiler |
__SUNCC__ | Sun CC, see also wxCHECK_SUNCC_VERSION |
__SYMANTECC__ | Symantec C++ |
__VISAGECPP__ | IBM Visual Age (OS/2) |
__VISUALC__ | Microsoft Visual C++, see also wxCHECK_VISUALC_VERSION. The value of this macro corresponds to the compiler version: |
__XLC__ | AIX compiler |
__WATCOMC__ | Watcom C++. The value of this macro corresponds to the compiler version, |
Some library features may not be always available even if they were selected by the user. To make it possible to check if this is the case, the library predefines the symbols in the form wxHAS_FEATURE
. Unlike wxUSE_FEATURE
symbols which are defined by the library user (directly in setup.h
or by running configure script) and which must be always defined as either 0 or 1, the wxHAS
symbols are only defined if the corresponding feature is available and not defined at all otherwise.
Currently the following symbols exist:
wxHAS_ATOMIC_OPS | Defined if wxAtomicInc() and wxAtomicDec() functions have an efficient (CPU-specific) implementation. Notice that the functions themselves are always available but can be prohibitively slow to use when implemented in a generic way, using a critical section. |
wxHAS_CONFIG_TEMPLATE_RW | Defined if the currently used compiler supports template Read() and Write() methods in wxConfig. |
wxHAS_LARGE_FILES | Defined if wxFile supports files more than 4GB in size (notice that you must include |
wxHAS_LARGE_FFILES | Defined if wxFFile supports files more than 4GB in size (notice that you must include |
wxHAS_MULTIPLE_FILEDLG_FILTERS | Defined if wxFileDialog supports multiple ('|'-separated) filters. |
wxHAS_POWER_EVENTS | Defined if wxPowerEvent are ever generated on the current platform. |
wxHAS_RADIO_MENU_ITEMS | Defined if the current port supports radio menu items (see wxMenu::AppendRadioItem). |
wxHAS_RAW_BITMAP | Defined if direct access to bitmap data using the classes in |
wxHAS_RAW_KEY_CODES | Defined if raw key codes (see wxKeyEvent::GetRawKeyCode are supported. |
wxHAS_REGEX_ADVANCED | Defined if advanced syntax is available in wxRegEx. |
wxHAS_TASK_BAR_ICON | Defined if wxTaskBarIcon is available on the current platform. |
Microsoft Visual C++ users may use the special wx/setup.h
file for this compiler in include/msvc
subdirectory. This file implicitly links in all the wxWidgets libraries using MSVC-specific pragmas which usually is much more convenient than manually specifying the libraries list in all of the project configurations. However sometimes linking with all the libraries is not desirable, for example because some of them were not built and this is where the symbols in this section can be helpful: defining them allows to not link with the corresponding library. The following symbols are honoured:
Notice that the base library is always included and the core is always included for the GUI applications (i.e. those which don't define wxUSE_GUI
as 0).
__WXWINDOWS__ | always defined in wxWidgets applications, see also wxCHECK_VERSION |
wxDEBUG_LEVEL | defined as 1 by default, may be pre-defined as 0 before including wxWidgets headers to disable generation of any code at all for the assertion macros, see Debugging |
__WXDEBUG__ | defined if wxDEBUG_LEVEL is 1 or more, undefined otherwise |
wxUSE_XXX | if defined as 1, feature XXX is active, see the wxUSE preprocessor symbols defined by wxWidgets (the symbols of this form are always defined, use #if and not #ifdef to test for them) |
WX_PRECOMP | is defined if precompiled headers (PCH) are in use. In this case, |
_UNICODE and UNICODE | both are defined if wxUSE_UNICODE is set to |
wxUSE_GUI | this particular feature test macro is defined to 1 when compiling or using the library with the GUI features activated, if it is defined as |
wxUSE_BASE | only used by wxWidgets internally (defined as 1 when building wxBase code, either as a standalone library or as part of the monolithic wxWidgets library, defined as 0 when building GUI library only) |
wxNO_RTTI | is defined if the compiler RTTI support has been switched off |
wxNO_EXCEPTIONS | is defined if the compiler support for C++ exceptions has been switched off |
wxNO_THREADS | if this macro is defined, the compilation options don't include compiler flags needed for multithreaded code generation. This implies that wxUSE_THREADS is 0 and also that other (non-wx-based) threading packages cannot be used neither. |
WXMAKINGDLL_XXX | used internally and defined when building the library |
WXUSINGDLL | defined when compiling code which uses wxWidgets as a DLL/shared library |
WXBUILDING | defined when building wxWidgets itself, whether as a static or shared library |
wxNO_T | may be predefined to prevent the library from defining _T() macro |
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