CLoudnessEventObserver Class Reference

class CLoudnessEventObserver : public CActive

Loudness event observer provides encapsulates a monitoring request towards the message handler.

LoudnessProxy.lib
Since
3.0

Inherits from

Constructor & Destructor Documentation

CLoudnessEventObserver()

CLoudnessEventObserver()[private]

C++ default constructor.

~CLoudnessEventObserver()

~CLoudnessEventObserver()[virtual]

Destructor.

Member Functions Documentation

ConstructL(TMMFMessageDestinationPckg, MCustomCommand &, MLoudnessCallback &)

voidConstructL(TMMFMessageDestinationPckgaMessageHandler,
MCustomCommand &aCustomCommand,
MLoudnessCallback &aCallback
)[private]

By default Symbian 2nd phase constructor is private.

Parameters

TMMFMessageDestinationPckg aMessageHandler
MCustomCommand & aCustomCommand
MLoudnessCallback & aCallback

DoCancel()

voidDoCancel()[private, virtual]

Implements cancellation of an outstanding request.

This function is called as part of the active object's Cancel().

It must call the appropriate cancel function offered by the active object's asynchronous service provider. The asynchronous service provider's cancel is expected to act immediately.

DoCancel() must not wait for event completion; this is handled by Cancel().

CActive::Cancel

NewL(TMMFMessageDestinationPckg, MCustomCommand &, MLoudnessCallback &)

CLoudnessEventObserver *NewL(TMMFMessageDestinationPckgaMessageHandler,
MCustomCommand &aCustomCommand,
MLoudnessCallback &aCallback
)[static]

Two-phased constructor.

Parameters

TMMFMessageDestinationPckg aMessageHandler
MCustomCommand & aCustomCommand
MLoudnessCallback & aCallback

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

Start()

voidStart()
Start event monitoring
Since
3.0

Stop()

voidStop()
Stop event monitoring
Since
3.0

Member Data Documentation

MLoudnessCallback * iCallback

MLoudnessCallback *iCallback[private]

MCustomCommand * iCustomCommand

MCustomCommand *iCustomCommand[private]

TEfLoudnessDataPckg iDataPckgFrom

TEfLoudnessDataPckg iDataPckgFrom[private]

TMMFMessageDestinationPckg iMessageHandler

TMMFMessageDestinationPckg iMessageHandler[private]

TBool iStopped

TBool iStopped[private]