+ /*
+ * @brief window's resize callback function
+ * This function is called when window is resized.
+ *
+ * @param[in] winHandle The resized window's handle.
+ * @param[in] size The window's new size.
+ */
+ void OnWindowResized(Dali::Window winHandle, Dali::Window::WindowSize size);
+
+ /**
+ * @brief This signal is emitted when an actor's children change their sibling order
+ *
+ * @param[in] actor parent actor.
+ */
+ void OnChildOrderChanged(Actor actor);
+