--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graphicscomposition/surfaceupdate/tsrc/twindows.h	Tue Feb 02 01:47:50 2010 +0200
@@ -0,0 +1,88 @@
+// Copyright (c) 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
+ @test
+ @internalComponent - Internal Symbian test code 
+*/
+
+#ifndef __TWINDOWS_H__
+#define __TWINDOWS_H__
+
+#include <e32base.h>
+
+class TWsEvent;
+class TWsRedrawEvent;
+class RWindowTreeNode;
+class RWindow;
+class RWindowGroup;
+class RBlankWindow;
+class RBackedUpWindow;
+class RWsSession;
+class CWindowGc;
+class CWsScreenDevice;
+
+/**
+ * The class handles redrawing of the window tree node standard class 
+ */
+class CTWindowTreeNode : public CBase
+	{
+public:
+	virtual void Event(TWsEvent & aEvent) = 0;
+	virtual void Redraw(TWsRedrawEvent & aEvent) = 0;
+	virtual RWindowTreeNode* WindowTreeNode() 	{ return iWin; }
+protected:
+	RWindowTreeNode* iWin;
+	};
+
+/**
+ * The class handles redrawing of the window window group
+ */
+class CTWindowGroup : public CTWindowTreeNode
+	{
+public:
+	static CTWindowGroup* NewL(RWsSession& aWs, CWsScreenDevice* aScreenDevice);
+	~CTWindowGroup();
+	void Event(TWsEvent & aEvent);
+	void Redraw(TWsRedrawEvent & aEvent);
+	RWindowGroup* WindowGroup() { return reinterpret_cast<RWindowGroup*>(iWin); }
+private:
+	CTWindowGroup();
+	void ConstructL(RWsSession & aWs, CWsScreenDevice* aScreenDevice);
+	};
+
+/**
+ * Base class for windows.
+ */
+class CTWindow : public CTWindowTreeNode
+	{
+public:
+	static CTWindow* NewL(RWsSession& aWs, CTWindowTreeNode& aGroup, CWindowGc& aGc);
+	~CTWindow();
+	void Event(TWsEvent & aEvent);
+	void Redraw(TWsRedrawEvent & aEvent);
+	RWindow* Window() { return reinterpret_cast<RWindow*>(iWin); }
+	virtual void Draw();
+private:
+	CWindowGc& iGc;
+private:
+	CTWindow(CWindowGc& aGc);
+	void ConstructL(RWsSession& aWs, CTWindowTreeNode& aGroup);
+	};
+
+#endif //__TWINDOWS_H__