mmdaaudiotoneobserver.h

一个简单的电子驱蚊器程序,通过调用频率发出声音.

// MMdaAudioToneObserver.h: interface for the MMdaAudioToneObserver class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_MMDAAUDIOTONEOBSERVER_H__9B080213_D107_4884_BF58_FC5160D4913B__INCLUDED_)
#define AFX_MMDAAUDIOTONEOBSERVER_H__9B080213_D107_4884_BF58_FC5160D4913B__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

class MMdaAudioToneObserver  
{
public:
	virtual void HandlePlayingStoppedL() = 0;
};

class CToneAdapater : public CBase, public MMdaAudioToneObserver 
{
public:
	enum TState
	{
		EStopped,
		EPlaying
	};
public:
	inline const TState& State() const;
	void Stop();
	void PlayToneL(TInt aKRepeats );
	virtual void MatoPlayComplete(TInt aError);
	virtual void MatoPrepareComplete(TInt aError);
	~CToneAdapater();

private:
	void ConstructL( );
	CMdaAudioToneUtility* iMdaAudioToneUtility;
	TState iState;

};
#endif // !defined(AFX_MMDAAUDIOTONEOBSERVER_H__9B080213_D107_4884_BF58_FC5160D4913B__INCLUDED_)