symbian_async_timer_imp.h

著名的 helix realplayer 基于手机 symbian 系统的 播放器全套源代码

/* ***** BEGIN LICENSE BLOCK ***** 
 * Version: RCSL 1.0/RPSL 1.0 
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 * This file is part of the Helix DNA Technology. RealNetworks is the 
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#ifndef SYMBIAN_ASYNC_TIMER_IMP_H
#define SYMBIAN_ASYNC_TIMER_IMP_H

#include "hxtypes.h"
#include "hxthread.h"

class HXSymbianAsyncTimerImp
{
public: 
    HXSymbianAsyncTimerImp();
    virtual ~HXSymbianAsyncTimerImp();

    //This starts the message pump sending HXMSG_ASYNC_TIMER messages
    //to pReceivingThread's queue every ulThreadId milliseconds.
    void Init(ULONG32 ulTimeOut, HXThread* pReceivingThread);

    //This starts the timer and calls pfExecFunc every ulTimeOut milliseconds.
    void Init( ULONG32 ulTimeOut, TIMERPROC pfExecFunc );

    ULONG32 GetTimeoutPeriod() const;

    void OnTimeout(); // Called when the timer fires

    virtual void DoExtraInit() = 0; // Allows derived object to do any
                                    // extra initialization. Called by
                                    // Init() functions.
    virtual ULONG32 GetID() = 0; // Returns the timer ID
    virtual void Destroy() = 0;  // Used to destroy the timer implementation

private:
    ULONG32           m_ulTimeOut;
    HXThread*         m_pReceivingThread;
    HXThreadMessage*  m_pMsg;
    TIMERPROC         m_pfExecFunc;
};

#endif /* SYMBIAN_ASYNC_TIMER_IMP_H */