docs/latex/wx/dynlib.tex

   1 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
   2 %% Name:        dynlib.tex
   3 %% Purpose:     wxDynamicLibrary documentation
   4 %% Author:      Vadim Zeitlin
   5 %% Modified by:
   6 %% Created:     14.01.02 (extracted from dllload.tex)
   7 %% RCS-ID:      $Id$
   8 %% Copyright:   (c) Vadim Zeitlin
   9 %% License:     wxWindows license
  10 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
  11
  12 \section{\class{wxDynamicLibrary}}\label{wxdynamiclibrary}
  13
  14 wxDynamicLibrary is a class representing dynamically loadable library
  15 (Windows DLL, shared library under Unix etc.). Just create an object of
  16 this class to load a library and don't worry about unloading it -- it will be
  17 done in the objects destructor automatically.
  18
  19 % deprecated now...
  20 %
  21 %\wxheading{See also}
  22 %
  23 %\helpref{wxDllLoader}{wxdllloader}
  24
  25
  26 \membersection{wxDynamicLibrary::wxDynamicLibrary}\label{wxdynamiclibrarywxdynamiclibrary}
  27
  28 \func{}{wxDynamicLibrary}{\void}
  29
  30 \func{}{wxDynamicLibrary}{\param{const wxString\& }{name}, \param{int }{flags = wxDL\_DEFAULT}}
  31
  32 Constructor. Second form calls \helpref{Load}{wxdynamiclibraryload}.
  33
  34
  35 \membersection{wxDynamicLibrary::CanonicalizeName}\label{wxdynamiclibrarycanonicalizename}
  36
  37 \func{wxString}{CanonicalizeName}{\param{const wxString\& }{name}, \param{wxDynamicLibraryCategory cat = wxDL\_LIBRARY}}
  38
  39 Returns the platform-specific full name for the library called \arg{name}. E.g.
  40 it adds a {\tt ".dll"} extension under Windows and {\tt "lib"} prefix and
  41 {\tt ".so"}, {\tt ".sl"} or maybe {\tt ".dylib"} extension under Unix.
  42
  43 The possible values for \arg{cat} are:
  44 \begin{twocollist}
  45     \twocolitem{wxDL\_LIBRARY}{normal library}
  46     \twocolitem{wxDL\_MODULE}{a loadable module or plugin}
  47 \end{twocollist}
  48
  49 \wxheading{See also}
  50
  51 \helpref{CanonicalizePluginName}{wxdynamiclibrarycanonicalizepluginname}
  52
  53
  54 \membersection{wxDynamicLibrary::CanonicalizePluginName}\label{wxdynamiclibrarycanonicalizepluginname}
  55
  56 \func{wxString}{CanonicalizePluginName}{\param{const wxString\& }{name}, \param{wxPluginCategory cat = wxDL\_PLUGIN\_GUI}}
  57
  58 This function does the same thing as
  59 \helpref{CanonicalizeName}{wxdynamiclibrarycanonicalizename} but for wxWindows
  60 plugins. The only difference is that compiler and version information are added
  61 to the name to ensure that the plugin which is going to be loaded will be
  62 compatible with the main program.
  63
  64 The possible values for \arg{cat} are:
  65 \begin{twocollist}
  66     \twocolitem{wxDL\_PLUGIN\_GUI}{plugin which uses GUI classes (default)}
  67     \twocolitem{wxDL\_PLUGIN\_BASE}{plugin which only uses wxBase}
  68 \end{twocollist}
  69
  70
  71 \membersection{wxDynamicLibrary::Detach}\label{wxdynamiclibrarydetach}
  72
  73 \func{wxDllType}{Detach}{\void}
  74
  75 Detaches this object from its library handle, i.e. the object will not unload
  76 the library any longer in its destructor but it is now the callers
  77 responsability to do this using \helpref{Unload}{wxdynamiclibraryunload}.
  78
  79
  80 \membersection{wxDynamicLibrary::GetSymbol}\label{wxdynamiclibrarygetsymbol}
  81
  82 \constfunc{void*}{GetSymbol}{\param{const wxString\& }{name}}
  83
  84 Returns pointer to symbol {\it name} in the library or NULL if the library
  85 contains no such symbol.
  86
  87 \wxheading{See also}
  88
  89 \helpref{wxDYNLIB\_FUNCTION}{wxdynlibfunction}
  90
  91
  92 \membersection{wxDynamicLibrary::IsLoaded}\label{wxdynamiclibraryisloaded}
  93
  94 \constfunc{bool}{IsLoaded}{\void}
  95
  96 Returns \true if the library was successfully loaded, \false otherwise.
  97
  98
  99 \membersection{wxDynamicLibrary::Load}\label{wxdynamiclibraryload}
 100
 101 \func{bool}{Load}{\param{const wxString\& }{name}, \param{int }{flags = wxDL\_DEFAULT}}
 102
 103 Loads DLL with the given \arg{name} into memory. The \arg{flags} argument can
 104 be a combination of the following bits:
 105 \begin{twocollist}
 106 \twocolitem{wxDL\_LAZY}{equivalent of RTLD\_LAZY under Unix, ignored elsewhere}
 107 \twocolitem{wxDL\_NOW}{equivalent of RTLD\_NOW under Unix, ignored elsewhere}
 108 \twocolitem{wxDL\_GLOBAL}{equivalent of RTLD\_GLOBAL under Unix, ignored elsewhere}
 109 \twocolitem{wxDL\_VERBATIM}{don't try to append the appropriate extension to
 110 the library name (this is done by default).}
 111 \end{twocollist}
 112
 113 Returns \true if the library was successfully loaded, \false otherwise.
 114
 115 \wxheading{See also}
 116
 117 \helpref{}{}
 118
 119
 120 \membersection{wxDynamicLibrary::Unload}\label{wxdynamiclibraryunload}
 121
 122 \func{void}{Unload}{\void}
 123
 124 \func{static void}{Unload}{\param{wxDllType }{handle}}
 125
 126 Unloads the library from memory. wxDynamicLibrary object automatically calls
 127 this method from its destructor if it had been successfully loaded.
 128
 129 The second version is only used if you need to keep the library in memory
 130 during a longer period of time than the scope of the wxDynamicLibrary object.
 131 In this case you may call \helpref{Detach}{wxdynamiclibrarydetach} and store
 132 the handle somewhere and call this static method later to unload it.
 133