MCoeMessageObserver Class Reference

#include <mw/coemain.h>

Link against: cone.lib

class MCoeMessageObserver

Public Member Enumerations
enum	TMessageResponse { EMessageNotHandled, EMessageHandled }

Public Member Functions
pure virtual TMessageResponse	HandleMessageL(TUint32, TUid, const TDesC8 &)

Protected Member Functions
	MCoeMessageObserver()

Detailed Description

Interface for handling incoming window server messages.

This interface is used to enable FEPs to keep their settings synchronised across all running instances.

Anything that needs to be notified of messages that get sent by the window server's message-sending service should derive from this class and override its pure virtual function.

In addition, derived classes also need to call CCoeEnv::AddMessageObserverL() during construction and CCoeEnv::RemoveMessageObserver() in their destructors.

Member Enumeration Documentation

Enum TMessageResponse

Message response flags.

Enumerator	Value	Description
EMessageNotHandled		Message not handled.
EMessageHandled		Message handled.

Constructor & Destructor Documentation

MCoeMessageObserver ( )

IMPORT_C

MCoeMessageObserver

(

)

[protected]

Member Function Documentation

HandleMessageL ( TUint32, TUid, const TDesC8 & )

TMessageResponse	HandleMessageL	(	TUint32	aClientHandleOfTargetWindowGroup,
			TUid	aMessageUid,
			const TDesC8 &	aMessageParameters
		)	[pure virtual]

Handles window server messages.

Implementations should return EMessageHandled if they are able to handle the message, or EMessageNotHandled if the message is not appropriate to this observer.

Parameter	Description
aClientHandleOfTargetWindowGroup	The window group that the message was sent to. Many implementations will not need this information.
aMessageUid	The message UID.
aMessageParameters	The message parameters.

Returns: Indicates whether the message was handled or not handled by the function.