borderWidth property Null safety

double borderWidth
final

Border width of the tooltip.

Defaults to 0.

late TooltipBehavior tooltipBehavior;

void initState() {
  tooltipBehavior = TooltipBehavior(
    enable: true,
    borderColor: Colors.red,
    borderWidth: 3
  );
  super.initState();
}

Widget build(BuildContext context) {
  return SfCartesianChart(
    tooltipBehavior: tooltipBehavior
  );
}

Implementation

final double borderWidth;