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View this topic on docs.devexpress.com (Learn more)

ChartControl.CustomDrawCrosshair Event

Occurs before crosshair items are drawn when the chart's contents are being drawn.

Namespace:DevExpress.XtraCharts
Assembly:DevExpress.XtraCharts.v19.2.UI.dll

Expanded Syntax

Expanded Event Data

The event handler receives an argument of type CustomDrawCrosshairEventArgs containing data related to this event.

The following CustomDrawCrosshairEventArgs properties provide information specific to this event.
Property Description
CrosshairAxisLabelElements Gets the settings of crosshair axis label elements to customize their appearance.
CrosshairElementGroups Provides access to the settings of crosshair elements and crosshair group header elements to customize their appearance.
CrosshairElements Gets the settings of crosshair elements (crosshair value lines, crosshair value labels, crosshair labels) to customize their appearance.
CrosshairGroupHeaderElements Gets the settings of crosshair group header elements to customize their appearance.
CrosshairLegendElements Returns crosshair legend elements to customize their appearance.
CrosshairLineElement Gets the settings of a crosshair line element to customize its appearance (color, line style).
IndicatorLegendElements Returns all indicator elements that the Crosshair Cursor shows in a legend.

Expanded Remarks

Use the CustomDrawCrosshair event to create a custom appearance of crosshair items.

Expanded Example

This example shows how to provide a custom appearance for the crosshair cursor using the CustomDrawCrosshair event. This event is invoked when you click the Custom Draw Crosshair Cursor button on the form.

If you wish to display crosshair axis lines and labels on a chart before custom drawing the crosshair cursor, set the DevExpress.XtraCharts.CrosshairOptions.ShowArgumentLine, DevExpress.XtraCharts.CrosshairOptions.ShowArgumentLabels, DevExpress.XtraCharts.CrosshairOptions.ShowValueLabels and DevExpress.XtraCharts.CrosshairOptions.ShowValueLine properties to true.

Note that the customization of the crosshair cursor is provided for the DevExpress.XtraCharts.CrosshairOptions.SnapMode property set to NearestArgument.

Expanded See Also

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