/////////////////////////////////////////////////////////////////////////////
// Name: module.h
-// Purpose: documentation for wxModule class
+// Purpose: interface of wxModule
// Author: wxWidgets team
// RCS-ID: $Id$
// Licence: wxWindows license
/**
@class wxModule
@wxheader{module.h}
-
+
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
- wxModule::OnInit and wxModule::OnExit
+ wxModule::OnInit and wxModule::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.
-
+
Note that your module class does not have to be in a header file.
-
+
For example:
-
+
@code
// A module to allow DDE initialization/cleanup
// without calling these functions from app.cpp or from
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
{
MyModule() { AddDependency(CLASSINFO(wxDDEModule)); }
virtual bool OnInit() { ... code using DDE ... }
virtual void OnExit() { ... }
-
+
private:
DECLARE_DYNAMIC_CLASS(MyModule)
};
-
+
IMPLEMENT_DYNAMIC_CLASS(MyModule, wxModule)
-
+
// Another module which uses DDE in its OnInit()
// but uses a named dependency
class MyModule2: public wxModule
MyModule2() { AddDependency("wxDDEModule"); }
virtual bool OnInit() { ... code using DDE ... }
virtual void OnExit() { ... }
-
+
private:
DECLARE_DYNAMIC_CLASS(MyModule2)
};
-
+
IMPLEMENT_DYNAMIC_CLASS(MyModule2, wxModule)
@endcode
-
+
@library{wxbase}
@category{FIXME}
*/
//@{
/**
- Call this function from the constructor of the derived class. @e dep must be
- the CLASSINFO of a wxModule-derived class and the
+ Call this function from the constructor of the derived class. @a dep must be
+ the CLASSINFO() of a wxModule-derived class and the
corresponding module will be loaded before and unloaded after
this module.
-
The second version of this function allows a dependency to be added by
name without access to the class info. This is useful when a module is
declared entirely in a source file and there is no header for the declaration
- of the module needed by CLASSINFO, however errors are
+ of the module needed by CLASSINFO(), however errors are
not detected until run-time, instead of compile-time, then.
-
Note that circular dependencies are detected and result in a fatal error.
-
- @param dep
- The class information object for the dependent module.
-
- @param classname
- The class name of the dependent module.
+
+ @param dep
+ The class information object for the dependent module.
+ @param classname
+ The class name of the dependent module.
*/
- void AddDependency(wxClassInfo * dep);
- void AddDependency(const char * classname);
+ void AddDependency(wxClassInfo* dep);
+ void AddDependency(const char* classname);
//@}
/**
*/
virtual bool OnInit();
};
+