CCallbackTimer Class Reference

class CCallbackTimer : public CTimer

A timer class that provides a call back on timer expiry

Inherits from

Constructor & Destructor Documentation

CCallbackTimer(MTimerObserver &, TBool)

CCallbackTimer(MTimerObserver &aCallBackIf,
TBoolaEnableCancelCallback
)[private]

Parameters

MTimerObserver & aCallBackIf
TBool aEnableCancelCallback

Member Functions Documentation

NewL(MTimerObserver &, TBool)

IMPORT_C CCallbackTimer *NewL(MTimerObserver &aCallBackIf,
TBoolaEnableCancelCallback = EFalse
)[static]

Create and return a new instance of the CCallbackTimer. An ongoing timer operation can be cancelled by the client by calling the Cancel() method on this object.

Parameters

MTimerObserver & aCallBackIfCallback interface that implements TimerRun() function
TBool aEnableCancelCallback = EFalseIf ETrue cancel events (client initiated by calling Cancel() method) are notified. Default is EFalse

RunL()

voidRunL()[private, virtual]

Handles an active object's request completion event.

A derived class must provide an implementation to handle the completed request. If appropriate, it may issue another request.

The function is called by the active scheduler when a request completion event occurs, i.e. after the active scheduler's WaitForAnyRequest() function completes.

Before calling this active object's RunL() function, the active scheduler has:

1. decided that this is the highest priority active object with a completed request

2. marked this active object's request as complete (i.e. the request is no longer outstanding)

RunL() runs under a trap harness in the active scheduler. If it leaves, then the active scheduler calls RunError() to handle the leave.

Note that once the active scheduler's Start() function has been called, all user code is run under one of the program's active object's RunL() or RunError() functions.

CActiveScheduler::Start CActiveScheduler::Error CActiveScheduler::WaitForAnyRequest TRAPD

Member Data Documentation

MTimerObserver & iCallBackIf

MTimerObserver &iCallBackIf[private]

TBool iEnableCancelCallback

TBool iEnableCancelCallback[private]