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   [Collapse]ChartControl Class
     ChartControl Members
     ChartControl Constructor
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      About Method
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       CalcHitInfo(Point) Method
       CalcHitInfo(Int32, Int32) Method
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 End-User Documentation

ChartControl.CalcHitInfo(Point) Method

Returns information on the chart elements located at the specified point.

Namespace:DevExpress.XtraCharts
Assembly:DevExpress.XtraCharts.v17.2.UI.dll

Expanded Syntax

Parameters

point
Type: Point
A System.Drawing.Point structure, which specifies the test point coordinates relative to the chart's top-left corner.

Return value

Type: ChartHitInfo
A DevExpress.XtraCharts.ChartHitInfo object which contains information about the chart elements located at the test point.

Expanded Remarks

Use the CalcHitInfo method to determine which element is located at the specified point. For instance, this can be used when handling the chart's Click event to determine which element was clicked. In such cases, pass the current mouse pointer's coordinates as the method's parameter.

Note

This method is supported for 2D Chart Types only. So, hit testing for 3D Chart Types isn't supported in the current version of XtraCharts.

Expanded Example

Show Me

A complete sample project is available in the DevExpress Code Examples database at http://www.devexpress.com/example=E2717.

This example demonstrates how to handle the ChartControl.MouseMove event, to determine which series point is located under the test point and display information about its argument and value using ToolTipController.

To enable hit testing at runtime so that this example works correctly, make sure that the RuntimeHitTesting property is set to true.

Expanded See Also

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