X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a660d684eda27638bca0384b2058911a31c8e845..3694bb76c11d1ed1518f20a42f8907c948e190bd:/docs/latex/wx/module.tex diff --git a/docs/latex/wx/module.tex b/docs/latex/wx/module.tex index 3bd382e920..20357aaab2 100644 --- a/docs/latex/wx/module.tex +++ b/docs/latex/wx/module.tex @@ -1,85 +1,108 @@ \section{\class{wxModule}}\label{wxmodule} -The module system is a very simple mechanism to allow applications (and parts of wxWindows itself) to -define initialization and cleanup functions that are automatically called on wxWindows -startup and exit. - -To define a new kind of module, derive a class from wxModule, override the OnInit and OnExit functions, -and add the DECLARE\_DYNAMIC\_CLASS and IMPLEMENT\_DYNAMIC\_CLASS to header and implementation files -(which can be the same file). On initialization, wxWindows will find all classes derived from wxModule, -create an instance of each, and call each OnInit function. On exit, wxWindows will call the OnExit -function for each module instance. +The module system is a very simple mechanism to allow applications (and parts +of wxWidgets itself) to define initialization and cleanup functions that are +automatically called on wxWidgets startup and exit. + +To define a new kind of module, derive a class from wxModule, override the +\helpref{OnInit}{wxmoduleoninit} and \helpref{OnExit}{wxmoduleonexit} +functions, and add the DECLARE\_DYNAMIC\_CLASS and IMPLEMENT\_DYNAMIC\_CLASS to +header and implementation files (which can be the same file). On +initialization, wxWidgets will find all classes derived from wxModule, create +an instance of each, and call each OnInit function. On exit, wxWidgets will +call the OnExit function for each module instance. + +Note that your module class does not have to be in a header file. + +For example: + +\begin{verbatim} + // A module to allow DDE initialization/cleanup + // without calling these functions from app.cpp or from + // the user's application. + class wxDDEModule: public wxModule + { + public: + wxDDEModule() { } + virtual bool OnInit() { wxDDEInitialize(); return true; }; + virtual void OnExit() { wxDDECleanUp(); }; + + private: + DECLARE_DYNAMIC_CLASS(wxDDEModule) + }; + + IMPLEMENT_DYNAMIC_CLASS(wxDDEModule, wxModule) + + + // Another module which uses DDE in its OnInit() + class MyModule: public wxModule + { + public: + wxDDEModule() { AddDependency(CLASSINFO(wxDDEModule)); } + virtual bool OnInit() { ... code using DDE ... } + virtual void OnExit() { ... } + + private: + DECLARE_DYNAMIC_CLASS(wxDDEModule) + }; +\end{verbatim} \wxheading{Derived from} \helpref{wxObject}{wxobject} +\wxheading{Include files} + + + +\wxheading{Library} + +\helpref{wxBase}{librarieslist} + \latexignore{\rtfignore{\wxheading{Members}}} -\membersection{wxModule::wxModule}\label{wxmoduleconstr} + +\membersection{wxModule::wxModule}\label{wxmodulector} \func{}{wxModule}{\void} Constructs a wxModule object. -\membersection{wxModule::\destruct{wxModule}} + +\membersection{wxModule::\destruct{wxModule}}\label{wxmoduledtor} \func{}{\destruct{wxModule}}{\void} Destructor. -\membersection{wxModule::CleanupModules}\label{wxmodulecleanupmodules} - -\func{static void}{CleanupModules}{\void} - -Calls Exit for each module instance. Called by wxWindows on exit, so there is no -need for an application to call it. -\membersection{wxModule::Exit}\label{wxmoduleexit} +\membersection{wxModule::AddDependency}\label{wxmoduleoninit} -\func{void}{Exit}{\void} +\func{void}{AddDependency}{\param{wxClassInfo * }{dep}} -Calls OnExit. This function is called by wxWindows and should not need to be called -by an application. +Call this function from the constructor of the derived class. \arg{dep} must be +the \helpref{CLASSINFO}{classinfo} of a wxModule-derived class and the +corresponding module will be loaded \emph{before} and unloaded \emph{after} +this module. -\membersection{wxModule::Init}\label{wxmoduleinit} +Note that circular dependencies are detected and result in a fatal error. -\func{bool}{Init}{\void} +\wxheading{Parameters} -Calls OnInit. This function is called by wxWindows and should not need to be called -by an application. +\docparam{dep}{The class information object for the dependent module.} -\membersection{wxModule::InitializeModules}\label{wxmoduleinitializemodules} - -\func{static bool}{InitializeModules}{\void} - -Calls Init for each module instance. Called by wxWindows on startup, so there is no -need for an application to call it. \membersection{wxModule::OnExit}\label{wxmoduleonexit} -\func{virtual bool}{OnExit}{\void} +\func{virtual void}{OnExit}{\void} Provide this function with appropriate cleanup for your module. + \membersection{wxModule::OnInit}\label{wxmoduleoninit} \func{virtual bool}{OnInit}{\void} Provide this function with appropriate initialization for your module. If the function -returns FALSE, wxWindows will exit immediately. - -\membersection{wxModule::RegisterModule}\label{wxmoduleregistermodule} - -\func{static void}{RegisterModule}{\param{wxModule*}{ module}} - -Registers this module with wxWindows. Called by wxWindows on startup, so there is no -need for an application to call it. - -\membersection{wxModule::RegisterModules}\label{wxmoduleregistermodules} - -\func{static bool}{RegisterModules}{\void} - -Creates instances of and registers all modules. Called by wxWindows on startup, so there is no -need for an application to call it. +returns false, wxWidgets will exit immediately.