diff -r 000000000000 -r bde4ae8d615e os/boardsupport/emulator/emulatorbsp/inc/displayhandler.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/os/boardsupport/emulator/emulatorbsp/inc/displayhandler.h	Fri Jun 15 03:10:57 2012 +0200
@@ -0,0 +1,48 @@
+// Copyright (c) 2007-2009 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:
+//
+
+/**
+ @file
+ @publishedPartner
+ @prototype
+*/
+
+#ifndef __DISPLAYHANDLER_H__
+#define __DISPLAYHANDLER_H__
+
+/**
+Display request handler interface
+*/
+class MDisplayHandler
+	{
+public:
+	/**
+	Process a request on this logical channel.
+	
+	@param aReqNo	Request number:
+			== KMaxTInt, a 'DoCancel' message
+			>= 0, a 'DoControl' message with function number equal to aReqNo
+			< 0, a 'DoRequest' message with function number equal to ~aReqNo
+	@param a1		First argument. For DoRequest requests this is a pointer to
+			the TRequestStatus.
+	@param a2     Second argument. For DoRequest this is a pointer to the 2
+			actual TAny* arguments.
+	@return	Result. Ignored by device driver framework for DoRequest requests.
+	*/
+	virtual TInt HandleRequest(TInt aReqNo, TAny* a1, TAny* a2) = 0;
+	};
+
+#endif
+