X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/f6e9a8189cfd9189418d6c0976a8a07f3bcd914b..d441742626a54f7dd10888ebac5abcc0e55f9234:/docs/latex/wx/module.tex?ds=sidebyside diff --git a/docs/latex/wx/module.tex b/docs/latex/wx/module.tex index b3f58fec88..795746352d 100644 --- a/docs/latex/wx/module.tex +++ b/docs/latex/wx/module.tex @@ -1,14 +1,16 @@ \section{\class{wxModule}}\label{wxmodule} -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 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, 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. +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. @@ -18,17 +20,31 @@ For example: // A module to allow DDE initialization/cleanup // without calling these functions from app.cpp or from // the user's application. - class wxDDEModule: public wxModule { - DECLARE_DYNAMIC_CLASS(wxDDEModule) public: - wxDDEModule() {} - bool OnInit() { wxDDEInitialize(); return true; }; - void OnExit() { wxDDECleanUp(); }; + 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} @@ -41,28 +57,47 @@ For example: \latexignore{\rtfignore{\wxheading{Members}}} + \membersection{wxModule::wxModule}\label{wxmodulector} \func{}{wxModule}{\void} Constructs a wxModule object. + \membersection{wxModule::\destruct{wxModule}}\label{wxmoduledtor} \func{}{\destruct{wxModule}}{\void} Destructor. + +\membersection{wxModule::AddDependency}\label{wxmoduleoninit} + +\func{void}{AddDependency}{\param{wxClassInfo * }{dep}} + +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. + +Note that circular dependencies are detected and result in a fatal error. + +\wxheading{Parameters} + +\docparam{dep}{The class information object for the dependent module.} + + \membersection{wxModule::OnExit}\label{wxmoduleonexit} \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, wxWidgets will exit immediately. -