audioplayertimer.h

Symbian S60下的声音播放器的例子,适合初学者

#ifndef __AUDIOPLAYERTIMER_H__
#define __AUDIOPLAYERTIMER_H__

#include <e32base.h>

/**
* Observer for when Timer completes
*/
class MAudioPlayerTimerObserver
	{
	public:
		virtual void TimerCompleteL() = 0;
	};

// CLASS DECLARATION

/**
 *
 * @class	AudioPlayerTimer AudioPlayerTimer.h
 * @brief	This class is an elementary timer object, deriving from CTimer.
 * As soon as the object is created, it starts waiting for iTime to expire.
 * When it does, the RunL() is called and the observer is updated.
 *
 * Copyright (c) EMCC Software Ltd 2003
 * @version	1.0
 *
 */
class CAudioPlayerTimer	:	public CTimer
	{
	public:
		static CAudioPlayerTimer* NewL(MAudioPlayerTimerObserver& aObserver, TInt aTime);
		~CAudioPlayerTimer();

	public:				// CActive
		void RunL();
		void DoCancel();

	private:
		CAudioPlayerTimer(MAudioPlayerTimerObserver& aObserver, TInt aTime);
		void ConstructL();

	private:
		MAudioPlayerTimerObserver&	iObserver;
		TInt					iTime;
	};

#endif