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C/C++

chxavcallback.h：源码内容

							/************************************************************************
 * chxavcallback.h
 * ---------------
 *
 * Synopsis:
 * Encapsulates single or periodic timer callback
 *
 *
 * (c) 1995-2003 RealNetworks, Inc. Patents pending. All rights reserved.
 *
 ************************************************************************/
#ifndef _chxavcallback_h_
#define _chxavcallback_h_
// Include from this project...
#include "chxavactivecompletiondispatch.h"
#include "chxavcommand.h"
class CHXAvCallback
{
public:
    enum CallbackType
    {
        ONCE,
        REPEAT
    };
    CHXAvCallback();
    virtual ~CHXAvCallback();
    void ConstructL(const CHXAvCommand& cmd);
    void Set(TUint msTimeout, CallbackType cbType = ONCE);
    void Stop();
    bool IsPending() const;
private:
    void OnTimerEvent(TInt status);
    void OnTimerEventCancel(TInt status);
private:
    CHXAvActiveCmplPtr		m_pActiveObject;
    RTimer			m_timer;
    CHXAvCommand*		m_pAction;
    CallbackType		m_cbType;
    TUint			m_msTimeout;
};
//////////////////////////////////////////
// return true if callback is pending
inline
bool CHXAvCallback::IsPending() const
{
    return 0 != m_pActiveObject->IsActive();
}
#endif // _chxavcallback_h_

						