/// <summary>
/// Overrides this method if you want to handle behavior.
/// </summary>
/// <since_tizen> 3 </since_tizen>
protected override void OnCreate()
{
// This is also required to create DisposeQueue on main thread.
DisposeQueue disposeQ = DisposeQueue.Instance;
disposeQ.Initialize();
base.OnCreate();
// Dali's default layer is default center origin. need to change as top left.
// NUI's Layer is like a transparent film which covers entire window. (Layer is not an actor of Dali)
// otherwise, this makes ScreenPosition as wrong value.
Layer defaultLayer = Window.Instance.GetDefaultLayer();
defaultLayer.SetParentOrigin(Tizen.NUI.ParentOrigin.TopLeft);
defaultLayer.SetAnchorPoint(Tizen.NUI.PivotPoint.TopLeft);
}