public static void ClearMouseButtonDown() => MouseButtonDownAsweredBy = null;
public static void RemoveClickedElement(IQGMouseHandler element) => s_ClickedElementsCollection.Remove(element);
public static void AnswerMouseButtonDown(IQGMouseHandler element) => MouseButtonDownAsweredBy = element;
public static void AddClickedElement(IQGMouseHandler element) => s_ClickedElementsCollection.Add(element);