TdxChartHitCode Enum

Enumerates HitTest codes available in the Chart control.

Declaration

TdxChartHitCode = (
    None,
    Chart,
    ChartTitle,
    DiagramTitle,
    LegendTitle,
    SeriesTitle,
    AxisTitle,
    TotalLabel,
    Legend,
    LegendItem,
    Axis,
    AxisValueLabel,
    SeriesValueLabel,
    SeriesPoint,
    Diagram,
    PlotArea,
    Series
);

Members

Name	Description	Example
None	The inspected point is outside the Chart control client area. This value has the same effect on all HitTest-related properties similarly to the Chart enumeration value – they return nil (in Delphi) or nullptr (in C++Builder) in this case.
Chart	The inspected point is within the Chart control’s client area but does not belong to any particular visual element. This value has the same effect on all HitTest-related properties as does the None enumeration value – they return nil (in Delphi) or nullptr (in C++Builder) in this case.
ChartTitle	The inspected point belongs to a chart title. You can use the Title property to access the inspected chart title. Cast the property value to the TdxChartTitle class to access all public API members of the inspected chart title.
DiagramTitle	The inspected point belongs to a diagram title. You can use Title and Diagram properties to access the inspected title and its parent diagram, respectively. Cast the Title property value to the TdxChartDiagramTitle class to access all public API members of the inspected chart title.
LegendTitle	The inspected point belongs to a legend title. You can use Title and Legend properties to access the inspected title and its parent legend pane, respectively. Cast the Title property to the TdxChartLegendTitle class to access all public API members of the inspected legend pane title. If the parent legend pane of the inspected title belongs to the Chart control, you can cast the Legend property value to the TdxChartLegend class to access all public API members of the parent legend pane. If the parent legend pane of the inspected title belongs to a diagram, you can cast the Legend property value to the TdxChartDiagramLegend class to access all public API members of the parent legend pane. In addition, you can use the Diagram property to access the parent diagram of the inspected title’s parent legend pane.
SeriesTitle	The inspected point belongs to a Pie or Doughnut series title. You can use Title, Series, and Diagram properties to access the inspected title and its parent series and diagram, respectively. Cast the Title property value to the TdxChartSeriesTitle class to access all public API members of the inspected series title.
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.
TotalLabel	The inspected point belongs to a total label of a Pie or Doughnut series. You can use TotalLabel and Diagram properties to access the inspected total label and its parent diagram, respectively.
Legend	The inspected point is within a chart or diagram legend pane. You can use the Legend property to access the inspected legend pane. If the inspected legend pane belongs to the Chart control, you can cast the Legend property value to the TdxChartLegend class to access all public API members of the inspected legend pane. If the inspected legend pane belongs to a diagram, you can cast the Legend property value to the TdxChartDiagramLegend class to access all public API members of the inspected legend pane.
LegendItem	The inspected point belongs to a legend item in a chart or diagram legend pane. You can use LegendItem and Legend properties to access the inspected legend item and its parent legend pane, respectively. If the parent legend pane of the inspected legend item belongs to the Chart control, you can cast the Legend property value to the TdxChartLegend class to access all public API members of the parent legend pane. If the parent legend pane of the inspected legend item belongs to a diagram, you can cast the Legend property value to the TdxChartDiagramLegend class to access all public API members of the parent legend pane.
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.
SeriesValueLabel	The inspected point is within a series value label. You can use SeriesValueLabel, SeriesPoint, and Diagram properties to access the inspected series value label, and its parent series point and diagram, respectively.
SeriesPoint	The inspected point belongs to a series point in a diagram. You can use SeriesPoint, Series, and Diagram properties to access the inspected series point and its parent series and diagram, respectively.
Diagram	The inspected point is within one of the visible diagrams, but does not belong to any of the diagram elements, such as axes, series, labels, etc. You can use only the Diagram property to access an inspected diagram. Cast the property value to the TdxChartSimpleDiagram or TdxChartXYDiagram class depending on the actual diagram type to access all diagram-specific public API members.
PlotArea	The inspected point is within an XY diagram plot area, but does not belong to any of the diagram elements within it, such as series, series points, value labels, etc. If the Chart control’s HitTest.HitCode property returns this code, the HitTest.InPlotArea property returns True. You can use HitTest.Argument and HitTest.Value properties to obtain the coordinates of the inspected point within the plot area of an XY diagram in corresponding axis measurement units. You can use only the Diagram property to access the inspected diagram. Cast this property value to the TdxChartXYDiagram class to access all public API members of the inspected XY diagram.
Series	The inspected point belongs to a series in a diagram. You can use Series and Diagram properties to access the inspected series and its parent diagram, respectively. Cast the Series property value to the TdxChartSimpleSeries or TdxChartXYSeries class depending on the actual series type to access all series-specific public API members.

Remarks

HitTest codes allow you to identify different visual Chart elements.

Note

TdxChartHitCode is a scoped enumeration type. Use the type name together with a scope resolution token (. in Delphi or :: in C++Builder) followed by an enumeration value to refer to this value. For example, use TdxChartHitCode.SeriesValueLabel (in Delphi) or TdxChartHitCode::SeriesValueLabel (in C++Builder) to refer to the SeriesValueLabel value in code.

Direct TdxChartHitCode Type Reference

The TdxChartHitTest.HitCode property references the TdxChartHitCode type.