// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).

 // All rights reserved.

 // This component and the accompanying materials are made available

 // under the terms of "Eclipse Public License v1.0"

 // which accompanies this distribution, and is available

 // at the URL "http://www.eclipse.org/legal/epl-v10.html".

 //

 // Initial Contributors:

 // Nokia Corporation - initial contribution.

 //

 // Contributors:

 //

 // Description:

 //

 // Started by BLB, October 1996

 #if !defined(__BACNTF_H__)

 #define __BACNTF_H__

 #include <e32base.h>

 class CEnvironmentChangeNotifier : public CActive

 /** Environment change notifier. This is an active object and can be used to handle 

 environment change events. 

 @publishedAll

 @released

 */

 	{

 public:

 	IMPORT_C static CEnvironmentChangeNotifier* NewL(TInt aPriority,const TCallBack& aCallBack);

 	IMPORT_C ~CEnvironmentChangeNotifier();

 	IMPORT_C void Start();

 	IMPORT_C TInt Set(const TCallBack& aCallBack);

 	inline TInt Change() const;

 private:

 	inline CEnvironmentChangeNotifier(TInt aPriority);

 	void RunL();

 	void DoCancel();

 private:

 	TInt iChange;

 	TCallBack iCallBack;

 	RChangeNotifier iChangeNotifier;

 	};

 inline TInt CEnvironmentChangeNotifier::Change() const

 	/** Returns the last set of change events.

 	If the last outstanding request completed normally, the function returns a 

 	bit pattern where each bit value corresponds to one of the enumerators defined 

 	by TChanges. A set bit indicates that the corresponding change event occurred.

 	For example, if the bit value TChanges::EChangesMidnightCrossover is set, 

 	then the system time has passed midnight.

 	@return A set of bits consisting of one or more of the values defined by TChanges, 

 	or KErrCancel if the last outstanding request was cancelled. 

 	@see TChanges */

 	{return iChange;}

 #endif