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MFeatureObserver Class Reference

class MFeatureObserver

Class provides a callback interface for handling notifification of changes in features. The client derives a class from this interface and implements the HandleNotifyChange-methods that interest it.

Feature Notifier API consists of the classes CFeatureNotifier and MFeatureObserver . TFeatureEntry and TFeatureChangeType are defined in featurecmn.h.

Public Member Functions
void	HandleNotifyChange ( TFeatureChangeType , TFeatureEntry )
void	HandleNotifyError ( TInt )

Member Functions Documentation

HandleNotifyChange(TFeatureChangeType, TFeatureEntry)

void	HandleNotifyChange	(	TFeatureChangeType	aType,
			TFeatureEntry	aFeature
		)	[pure virtual]

This callback method is used to notify the client about the change in a feature.

TFeatureChangeType TFeatureEntry

Parameters

TFeatureChangeType aType	Type of the change.
TFeatureEntry aFeature	The changed feature. Note that although aFeature is a TFeatureEntry object, only the iFeatureID field is set by the server.

HandleNotifyError(TInt)

void

HandleNotifyError

(

TInt

aError

)

[pure virtual]

This callback method is used to notify the client about errors in the CFeatureNotifier. Any error in the notifier causes the notifier to stop handling of notifications. Handling can be restarted with a call to aNotifier->NotifyRequest(), if the error is non-fatal.

Parameters

TInt aError

One of the Symbian OS error codes.