Hyena.Widgets.SmoothScrolledWindow.OnScrollEvent C# (CSharp) Méthode

        protected override bool OnScrollEvent (Gdk.EventScroll evnt)
        {
            switch (evnt.Direction) {
            case ScrollDirection.Up:
                TargetValue = Math.Max (TargetValue - Vadjustment.StepIncrement, 0);
                break;
            case ScrollDirection.Down:
                TargetValue = Math.Min (TargetValue + Vadjustment.StepIncrement, Vadjustment.Upper - Vadjustment.PageSize);
                break;
            default:
                return base.OnScrollEvent (evnt);
            }
            return true;
        }