Crosshair

When enabled crosshair cursor is changed from default one to custom crosshair. (It's enabled by default.)

It's also changed while drawing:

How to control crosshair in dxchart5-react

By using initialChartConfig from here:

initialChartConfig: {
    components: {
        crossTool: {
            type: 'cross-and-labels',
        }
    }
}

See more information about CrossTool.