private void OnPointsSpecified(object sender, SignaturePadCanvasView.PointsEventArgs e)
        {
            var ctrl = Control;

            if (ctrl != null)
            {
                ctrl.LoadPoints(e.Points.Select(p => new NativePoint((float)p.X, (float)p.Y)).ToArray());
            }
        }
        private void OnPointsRequested(object sender, SignaturePadCanvasView.PointsEventArgs e)
        {
            var ctrl = Control;

            if (ctrl != null)
            {
                e.Points = ctrl.Points.Select(p => new Point(p.X, p.Y));
            }
        }