CairoExplorer.DockPanelSplitter.OnMouseDown C# (CSharp) Метод

        protected override void OnMouseDown(MouseButtonEventArgs e)
        {
            if (!IsEnabled) return;

            if (!IsMouseCaptured)
            {
                StartDragPoint = e.GetPosition(Parent as IInputElement);
                UpdateTargetElement();
                if (element != null)
                {
                    width = element.ActualWidth;
                    height = element.ActualHeight;
                    CaptureMouse();
                }
            }

            base.OnMouseDown(e);
        }