X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/9ae2ec95cf5cfdf44a5756db24f49a055b5372a1..e2c49e5cd2b7092e946fd97d76f3cca07916c91c:/docs/latex/wx/dynlib.tex diff --git a/docs/latex/wx/dynlib.tex b/docs/latex/wx/dynlib.tex index 49cec53bd8..59ef7f8a82 100644 --- a/docs/latex/wx/dynlib.tex +++ b/docs/latex/wx/dynlib.tex @@ -6,60 +6,140 @@ %% Created: 14.01.02 (extracted from dllload.tex) %% RCS-ID: $Id$ %% Copyright: (c) Vadim Zeitlin -%% License: wxWindows license +%% License: wxWidgets license %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% \section{\class{wxDynamicLibrary}}\label{wxdynamiclibrary} wxDynamicLibrary is a class representing dynamically loadable library -(Windows DLL, shared library under Unix etc.). It is implemented as a wrapper -to \helpref{wxDllLoader}{wxdllloader}. +(Windows DLL, shared library under Unix etc.). Just create an object of +this class to load a library and don't worry about unloading it -- it will be +done in the objects destructor automatically. + +% deprecated now... +% +%\wxheading{See also} +% +%\helpref{wxDllLoader}{wxdllloader} -\wxheading{See also} -\helpref{wxDllLoader}{wxdllloader} \membersection{wxDynamicLibrary::wxDynamicLibrary}\label{wxdynamiclibrarywxdynamiclibrary} \func{}{wxDynamicLibrary}{\void} -\func{}{wxDynamicLibrary}{\param{const wxString\& }{name}} +\func{}{wxDynamicLibrary}{\param{const wxString\& }{name}, \param{int }{flags = wxDL\_DEFAULT}} Constructor. Second form calls \helpref{Load}{wxdynamiclibraryload}. + +\membersection{wxDynamicLibrary::CanonicalizeName}\label{wxdynamiclibrarycanonicalizename} + +\func{wxString}{CanonicalizeName}{\param{const wxString\& }{name}, \param{wxDynamicLibraryCategory}{ cat = wxDL\_LIBRARY}} + +Returns the platform-specific full name for the library called \arg{name}. E.g. +it adds a {\tt ".dll"} extension under Windows and {\tt "lib"} prefix and +{\tt ".so"}, {\tt ".sl"} or maybe {\tt ".dylib"} extension under Unix. + +The possible values for \arg{cat} are: + +\begin{twocollist} + \twocolitem{wxDL\_LIBRARY}{normal library} + \twocolitem{wxDL\_MODULE}{a loadable module or plugin} +\end{twocollist} + +\wxheading{See also} + +\helpref{CanonicalizePluginName}{wxdynamiclibrarycanonicalizepluginname} + + + +\membersection{wxDynamicLibrary::CanonicalizePluginName}\label{wxdynamiclibrarycanonicalizepluginname} + +\func{wxString}{CanonicalizePluginName}{\param{const wxString\& }{name}, \param{wxPluginCategory}{ cat = wxDL\_PLUGIN\_GUI}} + +This function does the same thing as +\helpref{CanonicalizeName}{wxdynamiclibrarycanonicalizename} but for wxWidgets +plugins. The only difference is that compiler and version information are added +to the name to ensure that the plugin which is going to be loaded will be +compatible with the main program. + +The possible values for \arg{cat} are: + +\begin{twocollist} + \twocolitem{wxDL\_PLUGIN\_GUI}{plugin which uses GUI classes (default)} + \twocolitem{wxDL\_PLUGIN\_BASE}{plugin which only uses wxBase} +\end{twocollist} + + \membersection{wxDynamicLibrary::Detach}\label{wxdynamiclibrarydetach} \func{wxDllType}{Detach}{\void} Detaches this object from its library handle, i.e. the object will not unload the library any longer in its destructor but it is now the callers -responsability to do this. +responsability to do this using \helpref{Unload}{wxdynamiclibraryunload}. + + +\membersection{wxDynamicLibrary::GetSymbol}\label{wxdynamiclibrarygetsymbol} + +\constfunc{void *}{GetSymbol}{\param{const wxString\& }{name}} + +Returns pointer to symbol {\it name} in the library or NULL if the library +contains no such symbol. + +\wxheading{See also} + +\helpref{wxDYNLIB\_FUNCTION}{wxdynlibfunction} + + +\membersection{wxDynamicLibrary::HasSymbol}\label{wxdynamiclibraryhassymbol} + +\constfunc{bool}{HasSymbol}{\param{const wxString\& }{name}} + +Returns \true if the symbol with the given \arg{name} is present in the dynamic +library, \false otherwise. Unlike \helpref{GetSymbol}{wxdynamiclibrarygetsymbol}, +this function doesn't log an error message if the symbol is not found. + +\newsince{2.5.4} + \membersection{wxDynamicLibrary::IsLoaded}\label{wxdynamiclibraryisloaded} \constfunc{bool}{IsLoaded}{\void} -Returns true if the library was successfully loaded, false otherwise. +Returns \true if the library was successfully loaded, \false otherwise. + \membersection{wxDynamicLibrary::Load}\label{wxdynamiclibraryload} -\func{bool}{Load}{\param{const wxString\& }{name}} +\func{bool}{Load}{\param{const wxString\& }{name}, \param{int }{flags = wxDL\_DEFAULT}} -Loads DLL into memory. +Loads DLL with the given \arg{name} into memory. The \arg{flags} argument can +be a combination of the following bits: -Returns true if the library was successfully loaded, false otherwise. +\begin{twocollist} +\twocolitem{wxDL\_LAZY}{equivalent of RTLD\_LAZY under Unix, ignored elsewhere} +\twocolitem{wxDL\_NOW}{equivalent of RTLD\_NOW under Unix, ignored elsewhere} +\twocolitem{wxDL\_GLOBAL}{equivalent of RTLD\_GLOBAL under Unix, ignored elsewhere} +\twocolitem{wxDL\_VERBATIM}{don't try to append the appropriate extension to +the library name (this is done by default).} +\end{twocollist} -\membersection{wxDynamicLibrary::Unload}\label{wxdynamiclibraryunload} +Returns \true if the library was successfully loaded, \false otherwise. -\func{void}{Unload}{\void} -Unloads the library from memory. +\membersection{wxDynamicLibrary::Unload}\label{wxdynamiclibraryunload} -\membersection{wxDynamicLibrary::GetSymbol}\label{wxdynamiclibrarygetsymbol} +\func{void}{Unload}{\void} -\constfunc{void*}{GetSymbol}{\param{const wxString\& }{name}} +\func{static void}{Unload}{\param{wxDllType }{handle}} -Returns pointer to symbol {\it name} in the library or NULL if the library -contains no such symbol. +Unloads the library from memory. wxDynamicLibrary object automatically calls +this method from its destructor if it had been successfully loaded. +The second version is only used if you need to keep the library in memory +during a longer period of time than the scope of the wxDynamicLibrary object. +In this case you may call \helpref{Detach}{wxdynamiclibrarydetach} and store +the handle somewhere and call this static method later to unload it.