ChartObjectEventArgs.Area

public ChartArea Area {get;}

chartObjectEventArgs.Area: ChartArea

protected override void OnStart()
{
    Chart.ObjectHoverChanged += OnChartObjectHoverChanged;
}

private void OnChartObjectHoverChanged(ChartObjectHoverChangedEventArgs args)
{
    var areaName = args.Area == args.Chart ? "main area" : "indicator area";
    Print("Hovered object is on the {0}", areaName);
}

def on_start(self):
    api.Chart.ObjectHoverChanged += self.on_chart_object_hover_changed

def on_chart_object_hover_changed(self, args):
    api.Print(f"Hovered object area height: {args.Area.Height}, objects in area: {args.Area.Objects.Count}")