dragStart property
Callback that fires when starting to drag a point. The mouse event object
is passed in as an argument. If a drag handle is used, e.updateProp
is
set to the data property being dragged. The this
context is the point.
See drag and drop options.
API Docs: https://api.highcharts.com/highcharts/series.boxplot.data.events.dragStart
Implementation
HighchartsCallback? dragStart;