|
//------------------------------------------------------------------------------
// $Workfile: MessageHandler.h $
// $Header: $
//
// Copyright � 2008 SbjCat
// All rights reserved.
//
//
// *** Authors ***
// Steve Johnson
//
// $Revision: $
//
//-----------------------------------------------------------------------------
#pragma once
namespace SbjCore
{
namespace Mvc
{
class Controller;
struct MessageHandlerImpl;
/**
MessageHandler is the base class for Windows message handler
classes used in the Mvc framework. A Controller class adds an
instance of a MessageHandler to its map of handlers keyed by
the message ID(s) they handle. Implementation of the actual
handling of messages is left for derived classes.
In addition to providing a common base for the derived classes,
MessageHandler also maintains a link to any previous handler for
its message ID that was added to the Controller. This allows
derived Controllers to access handlers that were added to their
base classes. The Controller handles the assignment of the
previous handler. This is similar to the way MFC method based
message handlers access base class handlers.
*/
class AFX_EXT_CLASS MessageHandler
{
public:
MessageHandler();
virtual ~MessageHandler();
public:
void Initialize(Controller* pCtrlr, MessageHandler* pPrevHandler);
Controller* GetController() const;
protected:
MessageHandler* GetPrevHandler() const;
private:
struct MessageHandlerImpl* const m_pImpl;
};
}
}
//*** Modification History ***
// $Log: $
|
By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.
If a file you wish to view isn't highlighted, and is a text file (not binary), please
let us know and we'll add colourisation support for it.
Real name is Steve Johnson. Programming since 1979. Started on a Heathkit Micro with a DEC LSI-11 and UCSD Pascal. Moved to PCs & DOS as soon as Turbo Pascal became available. Did some Assembly, ISR, TSR etc. All this while working for a Manufacturing Co. for 8 years. Had my own solo Co. doing barcode labeling software for 4 years (terrible business man, all I wanted to do was code). Since then working for various software companies. Moved to Windows around the time of 3.1 with Borland C then C++. Then on to VC++ and MFC, and just about anything I could get my hands on or had to learn for my job, and been at it ever since. Of course recently I've been playing with .NET, ASP, C#, WPF etc.