Questions

Hello Icube,

In Wpf the touch events are promoted to the mouse equivalent, if they are unhandled, so you could use existing modifiers instead of creating your own. But if you need, you could subscribe to manipulation events on Modifier surface and implement desired behavior:

        public override void OnParentSurfaceRendered(SciChartRenderedMessage e)
        {
            base.OnParentSurfaceRendered(e);

            if (!_isSubscribed)
            {
                SubscribeModifierSurface();
                _isSubscribed = true;
            }
        }

        private void SubscribeModifierSurface()
        {
            ((ChartModifierSurface)ModifierSurface).ManipulationStarted += OnManipulationStarted;
            ((ChartModifierSurface)ModifierSurface).ManipulationCompleted += OnManipulationCompleted;
        }

What about zoom, RubberBandXyZoomModifier allows to zoom in specific selected area on the chart (please, see this example: http://http://www.scichart.com/Abt.Controls.SciChart.SL.ExampleTestPage.html#/Abt.Controls.SciChart.Example;component/Examples/IWantTo/ZoomAndPanAChart/DragAreaToZoom.xaml ). If your desired functionality is different, please, tell us and we will be glad to help.

If you have any more questions, don’t hesitate to ask!
Best regards,
Yuriy