public void RemoveDragStart(EasyTouch.DragStartHandler handler) { if (handler != null && this.m_DragStartList.Contains(handler)) { this.m_DragStartList.Remove(handler); } }
public void RegisterDragStart(EasyTouch.DragStartHandler handler) { if (handler != null && !this.m_DragStartList.Contains(handler)) { this.m_DragStartList.Add(handler); } }