active1.h

如题 就是 这东西 为什么非要我 说到 20个 字 呢 看看这回 够 不

// Active1.h
//
// Copyright (c) 1999-2007 Symbian Software Ltd.  All rights reserved.
//
// $Change: 937687 $
//
// Active1 exercise

#ifndef ACTIVE1_H
#define ACTIVE1_H

// PROJECT HEADERS
#include "eustd.h"

// panics
enum
    {
    EPanicAlreadyActive = 1000,
    };

//////////////////////////////////////////////////////////////////////////////
//
// -----> CExampleScheduler (definition)
//
//////////////////////////////////////////////////////////////////////////////
class CExampleScheduler : public CActiveScheduler
    {
public:
    void Error (TInt aError) const;
    };

//////////////////////////////////////////////////////////////////////////////
//
// -----> CActiveConsole (definition)
//
// An abstract class which provides the facility to issue key requests. 
//
//////////////////////////////////////////////////////////////////////////////
class CActiveConsole : public CActive
    {
public:
    // Construction
    CActiveConsole(CConsoleBase* aConsole);

    // Destruction
    ~CActiveConsole();

    // Issue request
    void RequestCharacter();
    
    // Cancel request.
    // Defined as pure virtual by CActive;
    // implementation provided by this class.
    void DoCancel();

    // Service completed request.
    // Defined as pure virtual by CActive;
    // implementation provided by this class,
    void RunL();

    // Called from RunL() - an implementation must be provided
    // by derived classes to handle the completed request
    virtual void ProcessKeyPress(TChar aChar) = 0;
public:
    void ConstructL();
      
protected:
    // Data members defined by this class
    CConsoleBase* iConsole;     // A console for reading from
    };

//////////////////////////////////////////////////////////////////////////////
//
// -----> CWriteKeyProcessor (definition)
//
// This class is derived from CActiveConsole. 
// Request handling: accepts input from the keyboard and outputs it 
// to the console.
//
//////////////////////////////////////////////////////////////////////////////
class CWriteKeyProcessor : public CActiveConsole
    {
public:
    // Construction
    CWriteKeyProcessor(CConsoleBase* aConsole);

public:
    // Static constuction
    static CWriteKeyProcessor *NewLC(CConsoleBase* aConsole);
    static CWriteKeyProcessor *NewL(CConsoleBase* aConsole);

public:
    // Service request
    void ProcessKeyPress(TChar aChar);
    };

#endif ACTIVE1_H