docs/latex/wx/cppconst.tex

   1 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   2 %% Name:        cppconst.tex
   3 %% Purpose:     Preprocessor symbols
   4 %% Author:      Vadim Zeitlin
   5 %% Created:     2002-08-22
   6 %% RCS-ID:      $Id$
   7 %% Copyright:   (c) 2002-2006 wxWidgets
   8 %% License:     wxWindows license
   9 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  10
  11 \section{Preprocessor symbols defined by wxWidgets}\label{cppconst}
  12
  13 These are preprocessor symbols used in the wxWidgets source, grouped
  14 by category (and sorted by alphabetical order inside each category). All of
  15 these macros except for the \texttt{wxUSE\_XXX} variety is defined if the
  16 corresponding condition is true and undefined if it isn't, so they should be
  17 always tested using \texttt{#ifdef} and not \texttt{#if}.
  18
  19 \subsection{GUI system}\label{guisystemconst}
  20
  21 \begin{twocollist}\itemsep=0pt
  22 \twocolitem{\_\_WINDOWS\_\_}{any Windows, you may also use \_\_WXMSW\_\_}
  23 \twocolitem{\_\_WIN16\_\_}{Win16 API (not supported since wxWidgets 2.6)}
  24 \twocolitem{\_\_WIN32\_\_}{Win32 API}
  25 \twocolitem{\_\_WXBASE\_\_}{Only wxBase, no GUI features (same as \texttt{wxUSE\_GUI} $== 0$)}
  26 \twocolitem{\_\_WXCOCOA\_\_}{OS X using Cocoa API}
  27 \twocolitem{\_\_WXDFB\_\_}{wxUniversal using DirectFB}
  28 \twocolitem{\_\_WXWINCE\_\_}{Windows CE}
  29 \twocolitem{\_\_WXGTK\_\_}{GTK+}
  30 \twocolitem{\_\_WXGTK12\_\_}{GTK+ 1.2 or higher}
  31 \twocolitem{\_\_WXGTK20\_\_}{GTK+ 2.0 or higher}
  32 \twocolitem{\_\_WXGTK24\_\_}{GTK+ 2.4 or higher}
  33 \twocolitem{\_\_WXGTK26\_\_}{GTK+ 2.6 or higher}
  34 \twocolitem{\_\_WXGTK210\_\_}{GTK+ 2.10 or higher}
  35 \twocolitem{\_\_WXMOTIF\_\_}{Motif}
  36 \twocolitem{\_\_WXMOTIF20\_\_}{Motif 2.0 or higher}
  37 \twocolitem{\_\_WXMAC\_\_}{Mac OS all targets}
  38 \twocolitem{\_\_WXMAC\_CLASSIC\_\_}{MacOS for Classic}
  39 \twocolitem{\_\_WXMAC\_CARBON\_\_}{MacOS for Carbon CFM (running under Classic or OSX) or true OS X Mach-O Builds}
  40 \twocolitem{\_\_WXMAC\_OSX\_\_}{MacOS X Carbon Mach-O Builds}
  41 \twocolitem{\_\_WXMGL\_\_}{SciTech Soft MGL (\_\_WXUNIVERSAL\_\_ will be also
  42 defined)}
  43 \twocolitem{\_\_WXMSW\_\_}{Any Windows}
  44 \twocolitem{\_\_WXOSX\_\_}{Any Mac OS X port (either Carbon or Cocoa)}
  45 \twocolitem{\_\_WXPALMOS\_\_}{PalmOS}
  46 \twocolitem{\_\_WXPM\_\_}{OS/2 native Presentation Manager}
  47 \twocolitem{\_\_WXSTUBS\_\_}{Stubbed version ('template' wxWin implementation)}
  48 \twocolitem{\_\_WXXT\_\_}{Xt; mutually exclusive with WX\_MOTIF, not
  49 implemented in wxWidgets 2.x}
  50 \twocolitem{\_\_WXX11\_\_}{wxX11 (\_\_WXUNIVERSAL\_\_ will be also defined)}
  51 \twocolitem{\_\_WXWINE\_\_}{WINE (i.e. WIN32 on Unix)}
  52 \twocolitem{\_\_WXUNIVERSAL\_\_}{wxUniversal port, always defined in addition
  53 to one of the symbols above so this should be tested first.}
  54 \twocolitem{\_\_X\_\_}{any X11-based GUI toolkit except GTK+}
  55 \end{twocollist}
  56
  57 There are two wxWidgets ports to Mac OS. One of them, wxMac, exists in two versions: Classic and
  58 Carbon. The Classic version is the only one to work on Mac OS version 8. The
  59 Carbon version may be built either as CFM or Mach-O (binary format, like ELF)
  60 and the former may run under OS 9 while the latter only runs under OS X.
  61 Finally, there is a new Cocoa port which can only be used under OS X. To
  62 summarize:
  63
  64 \begin{itemize}
  65 \item If you want to test for all Mac platforms, classic and OS X, you
  66 should test both \texttt{\_\_WXMAC\_\_} and \texttt{\_\_WXCOCOA\_\_}.
  67 \item If you want to test for any GUI Mac port under OS X, use
  68 \texttt{\_\_WXOSX\_\_}.
  69 \item If you want to test for any port under Mac OS X, including, for
  70 example, wxGTK and also wxBase, use \texttt{\_\_DARWIN\_\_} (see below).
  71 \end{itemize}
  72
  73 The convention is to use the \texttt{\_\_WX} prefix for these
  74 symbols, although this has not always been followed.
  75
  76 \subsection{Operating systems}\label{osconst}
  77
  78 \begin{twocollist}\itemsep=0pt
  79 \twocolitem{\_\_APPLE\_\_}{any Mac OS version}
  80 \twocolitem{\_\_AIX\_\_}{AIX}
  81 \twocolitem{\_\_BSD\_\_}{Any *BSD system}
  82 \twocolitem{\_\_CYGWIN\_\_}{Cygwin: Unix on Win32}
  83 \twocolitem{\_\_DARWIN\_\_}{Mac OS X using the BSD Unix C library (as opposed to using the Metrowerks MSL C/C++ library)}
  84 \twocolitem{\_\_DATA\_GENERAL\_\_}{DG-UX}
  85 \twocolitem{\_\_DOS\_GENERAL\_\_}{DOS (used with wxMGL only)}
  86 \twocolitem{\_\_FREEBSD\_\_}{FreeBSD}
  87 \twocolitem{\_\_HPUX\_\_}{HP-UX (Unix)}
  88 \twocolitem{\_\_GNU\_\_}{GNU Hurd}
  89 \twocolitem{\_\_LINUX\_\_}{Linux}
  90 \twocolitem{\_\_MACH\_\_}{Mach-O Architecture (Mac OS X only builds)}
  91 \twocolitem{\_\_OSF\_\_}{OSF/1}
  92 \twocolitem{\_\_PALMOS\_\_}{PalmOS}
  93 \twocolitem{\_\_SGI\_\_}{IRIX}
  94 \twocolitem{\_\_SOLARIS\_\_}{Solaris}
  95 \twocolitem{\_\_SUN\_\_}{Any Sun}
  96 \twocolitem{\_\_SUNOS\_\_}{Sun OS}
  97 \twocolitem{\_\_SVR4\_\_}{SystemV R4}
  98 \twocolitem{\_\_SYSV\_\_}{SystemV generic}
  99 \twocolitem{\_\_ULTRIX\_\_}{Ultrix}
 100 \twocolitem{\_\_UNIX\_\_}{any Unix}
 101 \twocolitem{\_\_UNIX\_LIKE\_\_}{Unix, BeOS or VMS}
 102 \twocolitem{\_\_VMS\_\_}{VMS}
 103 \twocolitem{\_\_WINDOWS\_\_}{any Windows}
 104 \twocolitem{\_\_WINE\_\_}{Wine}
 105 \end{twocollist}
 106
 107
 108 \subsection{Hardware architectures (CPU)}\label{cpuconst}
 109
 110 Note that not all of these symbols are always defined, it depends on the
 111 compiler used.
 112
 113 \begin{twocollist}\itemsep=0pt
 114 \twocolitem{\_\_ALPHA\_\_}{DEC Alpha architecture}
 115 \twocolitem{\_\_INTEL\_\_}{Intel i386 or compatible}
 116 \twocolitem{\_\_IA64\_\_}{Intel 64 bit architecture}
 117 \twocolitem{\_\_POWERPC\_\_}{Motorola Power PC}
 118 \end{twocollist}
 119
 120
 121 \subsection{Hardware type}\label{hardwareconst}
 122
 123 \begin{twocollist}\itemsep=0pt
 124 \twocolitem{\_\_SMARTPHONE\_\_}{Generic mobile devices with phone buttons and a small display}
 125 \twocolitem{\_\_PDA\_\_}{Personal digital assistant, usually with touch screen}
 126 \twocolitem{\_\_HANDHELD\_\_}{Small but powerful computer, usually with a keyboard}
 127 \twocolitem{\_\_POCKETPC\_\_}{Microsoft-powered PocketPC devices with touch-screen}
 128 \twocolitem{\_\_WINCE\_STANDARDSDK\_\_}{Microsoft-powered Windows CE devices, for generic Windows CE applications}
 129 \twocolitem{\_\_WINCE\_NET\_\_}{Microsoft-powered Windows CE .NET devices (\_WIN32\_WCE is 400 or greater)}
 130 \twocolitem{WIN32\_PLATFORM\_WFSP}{Microsoft-powered smartphone}
 131 \end{twocollist}
 132
 133
 134 \subsection{Compilers}\label{compilerconst}
 135
 136 \begin{twocollist}\itemsep=0pt
 137 \twocolitem{\_\_BORLANDC\_\_}{Borland C++. The value of the macro corresponds
 138 to the compiler version: $500$ is $5.0$.}
 139 \twocolitem{\_\_DJGPP\_\_}{DJGPP}
 140 \twocolitem{\_\_DIGITALMARS\_\_}{Digital Mars}
 141 \twocolitem{\_\_GNUG\_\_}{Gnu C++ on any platform, see also
 142 \helpref{wxCHECK\_GCC\_VERSION}{wxcheckgccversion}}
 143 \twocolitem{\_\_GNUWIN32\_\_}{Gnu-Win32 compiler, see also
 144 \helpref{wxCHECK\_W32API\_VERSION}{wxcheckw32apiversion}}
 145 \twocolitem{\_\_MINGW32\_\_}{MinGW}
 146 \twocolitem{\_\_MWERKS\_\_}{CodeWarrior MetroWerks compiler}
 147 \twocolitem{\_\_SUNCC\_\_}{Sun CC, see also \helpref{wxCHECK\_SUNCC\_VERSION}{wxchecksunccversion}}
 148 \twocolitem{\_\_SYMANTECC\_\_}{Symantec C++}
 149 \twocolitem{\_\_VISAGECPP\_\_}{IBM Visual Age (OS/2)}
 150 \twocolitem{\_\_VISUALC\_\_}{Microsoft Visual C++. The value of this macro
 151 corresponds to the compiler version: $1020$ for $4.2$ (the first supported
 152 version), $1100$ for $5.0$, $1200$ for $6.0$ and so on}
 153 \twocolitem{\_\_XLC\_\_}{AIX compiler}
 154 \twocolitem{\_\_WATCOMC\_\_}{Watcom C++. The value of this macro corresponds to
 155 the compiler version, $1100$ is $11.0$ and $1200$ is OpenWatcom.}
 156 \twocolitem{\_WIN32\_WCE}{Windows CE version}
 157 \end{twocollist}
 158
 159
 160 \subsection{Feature tests}\label{featuretests}
 161
 162 Some library features may not be always available even if they were selected by
 163 the user. To make it possible to check if this is the case, the library
 164 predefines the symbols in the form \texttt{wxHAS\_FEATURE}. Unlike
 165 \texttt{wxUSE\_FEATURE} symbols which are defined by the library user (directly
 166 in \texttt{setup.h} or by running configure script) and which must be always
 167 defined as either $0$ or $1$, the \texttt{wxHAS} symbols are only defined if
 168 the corresponding feature is available and not defined at all otherwise.
 169
 170 Currently the following symbols exist:
 171 \begin{twocollist}\itemsep=0pt
 172 \twocolitem{wxHAS\_LARGE\_FILES}{Defined if \helpref{wxFile}{wxfile} supports
 173 files more than 4GB in size.}
 174 \twocolitem{wxHAS\_LARGE\_FFILES}{Defined if \helpref{wxFFile}{wxffile}
 175 supports files more than 4GB in size.}
 176 \twocolitem{wxHAS\_POWER\_EVENTS}{Defined if
 177 \helpref{wxPowerEvent}{wxpowerevent} are ever generated on the current platform.}
 178 \twocolitem{wxHAS\_RADIO\_MENU\_ITEMS}{Defined if the current port supports
 179 \helpref{radio menu items}{wxmenuappendradioitem}.}
 180 \twocolitem{wxHAS\_RAW\_KEY\_CODES}{Defined if
 181 \helpref{raw key codes}{wxkeyeventgetrawkeycode} are supported.}
 182 \twocolitem{wxHAS\_REGEX\_ADVANCED}{Defined if advanced syntax is available in
 183 \helpref{wxRegEx}{wxregex}.}
 184 \twocolitem{wxHAS\_TASK\_BAR\_ICON}{Defined if
 185 \helpref{wxTaskBarIcon}{wxtaskbaricon} is available on the current platform.}
 186 \end{twocollist}
 187
 188
 189 \subsection{Miscellaneous}\label{miscellaneousconst}
 190
 191 \begin{twocollist}\itemsep=0pt
 192 \twocolitem{\_\_WXWINDOWS\_\_}{always defined in wxWidgets applications, see
 193 also \helpref{wxCHECK\_VERSION}{wxcheckversion}}
 194 \twocolitem{\_\_WXDEBUG\_\_}{defined in debug mode, undefined in release mode}
 195 \twocolitem{wxUSE\_XXX}{if defined as $1$, feature XXX is active
 196 (the symbols of this form are always defined, use \#if and not \#ifdef to test
 197  for them)}
 198 \twocolitem{WX\_PRECOMP}{is defined if precompiled headers (PCH) are in use. In
 199 this case, \texttt{wx/wxprec.h} includes \texttt{wx/wx.h} which, in turn,
 200 includes a number of wxWidgets headers thus making it unnecessary to include
 201 them explicitly. However if this is not defined, you do need to include them
 202 and so the usual idiom which allows to support both cases is to first include
 203 \texttt{wx/wxprec.h} and then, inside \texttt{#ifndef WX\_PRECOMP}, individual
 204 headers you need.}
 205 \twocolitem{\_UNICODE and UNICODE}{both are defined if wxUSE\_UNICODE is set to $1$}
 206 \twocolitem{wxUSE\_GUI}{this particular feature test macro is defined to $1$
 207 when compiling or using the library with the GUI features activated, if it is
 208 defined as $0$, only wxBase is available.}
 209 \twocolitem{wxUSE\_BASE}{only used by wxWidgets internally (defined as $1$ when
 210 building wxBase code, either as a standalone library or as part of the
 211 monolithic wxWidgets library, defined as $0$ when building GUI library only)}
 212 \twocolitem{wxNO\_RTTI}{is defined if the compiler RTTI support has been switched off}
 213 \twocolitem{wxNO\_EXCEPTIONS}{is defined if the compiler support for C++
 214 exceptions has been switched off}
 215 \twocolitem{wxNO\_THREADS}{if this macro is defined, the compilation options
 216 don't include compiler flags needed for multithreaded code generation. This
 217 implies that wxUSE\_THREADS is $0$ and also that other (non-wx-based) threading
 218 packages cannot be used neither.}
 219 \twocolitem{WXMAKINGDLL\_XXX}{used internally and defined when building the
 220 library \texttt{XXX} as a DLL; when a monolithic wxWidgets build is used only a
 221 single \texttt{WXMAKINGDLL} symbol is defined}
 222 \twocolitem{WXUSINGDLL}{defined when compiling code which uses wxWidgets as a
 223 DLL/shared library}
 224 \twocolitem{WXBUILDING}{defined when building wxWidgets itself, whether as a
 225 static or shared library}
 226 \end{twocollist}