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TdxChartHitTest.Axis Property

Provides access to the axis to which the inspected point belongs.

Declaration

property Axis: TdxChartCustomAxis read;

Property Value

Type Description
TdxChartCustomAxis

The currently inspected primary or secondary axis. Cast the property value to the corresponding terminal axis class to access all public API members.

Call the Axis.ClassType function to identify the actual axis class.

This property returns nil (in Delphi) or nullptr (in C++Builder) if the inspected point is not within the area occupied by an axis or any of its value labels in an XY diagram.

Remarks

You can use the Axis property to identify and access an axis at the inspected point; that is, when the HitCode property returns one of the following values:

Axis

The inspected point belongs to an axis in an XY diagram.

You can use Axis and Diagram properties to access the inspected axis and its parent diagram, respectively.

AxisValueLabel

The inspected point belongs to an axis value label in an XY diagram.

You can use AxisValueLabel, Axis, and Diagram properties to access the inspected value label and its parent axis and diagram, respectively.

AxisTitle

The inspected point belongs to an axis title.

You can use Title and Axis properties to access the inspected title and its parent axis, respectively. Cast the Title property value to the TdxChartAxisTitle class to access all public API members of the inspected axis title.

When the inspected point belongs to an axis, you can also use the Diagram property to access the parent XY diagram of the inspected axis.

VCL Chart Control: An Inspected Axis

See Also