How to create RWindow for Opengl ES

[summeli]

I'm trying to create my own RWindow (I'm running opengl es in separate thread) for OpenGL ES.

RWsSession iWsSession;
RWindowGroup iWindowGroup;
RWindow iWindow;
 
//connect session
User::LeaveIfError(iWsSession.Connect());
iWsSession.ComputeMode(RWsSession::EPriorityControlDisabled);

//create windowgroup
iWindowGroup=RWindowGroup(iWsSession);
User::LeaveIfError(iWindowGroup.Construct((TUint32)&iWindowGroup));
iWindowGroup.EnableScreenChangeEvents(); // flip events (EEventScreenDeviceChanged)
iWindowGroup.EnableFocusChangeEvents(); // EEventFocusGroupChanged
iWindowGroup.SetOrdinalPosition(0, 1); // TInt aPos, TInt aOrdinalPriority

//create window
TSize windowsize(320, 240);
iWindow=RWindow(iWsSession);
User::LeaveIfError(iWindow.Construct(iWindowGroup, (TUint32)&iWindow));
iWindow.SetSize(windowsize);
iWindow.PointerFilter(EPointerFilterDrag, 0);
iWindow.SetPointerGrab(ETrue);
iWindow.SetVisible(ETrue);
iWindow.Activate();

When I'm calling

iEglSurface = eglCreateWindowSurface (iEglDisplay, iEglConfig, &iWindow, 0);

I will get WSERV 6 panic (invalid window handle). How should I initialize the RWindow for Opengl ES? The same RWindow intialization example works for DirectScreenAccess.

[summeli]

I already solved this by using the opencopenglex example. I really don't need the S60 UI, so this example solved my problems.