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//------------------------------------------------------------------------------
// $Workfile: Handler.h $
// $Header: $
//
// Copyright � 2008 SbjCat
// All rights reserved.
//
//
// *** Authors ***
// Steve Johnson
//
// $Revision: $
//
//-----------------------------------------------------------------------------
#pragma once
namespace SbjCore
{
namespace UndoRedo
{
/**
Handler is a pure virtual base class. Derivatives handle the
details of performing any undo or redo of an action. Derivatives
should make their dtor protected to force dynamic allocation as these
are pushed onto the UndoRedoMgr's stack, and once there, the manager
handles deletion once the Handler is no longer part of the UndoRedo
process.
*/
class AFX_EXT_CLASS Handler
{
public:
virtual ~Handler(void);
public:
bool HandleUndo();
bool HandleRedo();
LPCTSTR GetHandlerName() const;
private:
virtual bool OnHandleUndo() = 0;
virtual bool OnHandleRedo() = 0;
virtual LPCTSTR OnGetHandlerName() const = 0;
};
}
}
//*** Modification History ***
// $Log: $
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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.