onCrosshairPositionChanging property

ChartCrosshairCallback? onCrosshairPositionChanging

Occurs when tapping the axis label. Here, you can get the appropriate axis that is tapped and the axis label text.

late CrosshairBehavior _crosshairBehavior;

@override
void initState() {
  _crosshairBehavior = CrosshairBehavior(enable: true);
  super.initState();
 }

Widget build(BuildContext context) {
    return Container(
        child: SfCartesianChart(
            crosshairBehavior: _crosshairBehavior,
onCrosshairPositionChanging: (CrosshairRenderArgs args) => crosshair(args)
        )
    );
}
void crosshair(CrosshairRenderArgs args) {
    args.text = 'crosshair';
}

Implementation

final ChartCrosshairCallback? onCrosshairPositionChanging;