ChartHitInfo.AxisTitle Property

Gets an axis title which is located under the test point.

Namespace: DevExpress.XtraCharts

Assembly: DevExpress.XtraCharts.v20.2.dll

Declaration

public AxisTitle AxisTitle { get; }
Public ReadOnly Property AxisTitle As AxisTitle

Property Value

Type Description
AxisTitle

An AxisTitle object which represents the axis title located under the test point.

Remarks

Use the AxisTitle property to access the axis title located under the test point if the ChartHitInfo.InAxis property returns true.

NOTE

The AxisTitle property returns null (Nothing in Visual Basic), if the ChartHitInfo.InAxis property is set to false. The AxisTitle property isn't null only if the mouse pointer actually hovers over an axis title, so the AxisTitle property may return null even if the ChartHitInfo.InAxis property is set to true.

For more information, refer to Axis Titles.

Examples

This example demonstrates how you can determine whether an axis title is being hovered by the mouse pointer, and if so, display its type (AxisTitleX or AxisTitleY) in a tooltip.

using DevExpress.XtraCharts;
using System;
using System.Windows.Forms;

namespace AxisTitleHitTestSample {
    public partial class SampleForm : Form {
        public SampleForm() {
            InitializeComponent();
        }

        private void OnMouseMove(object sender, MouseEventArgs e) {
            ChartHitInfo hitInfo = chart.CalcHitInfo(e.X, e.Y);
            if (hitInfo.AxisTitle != null)
                tooltipController.ShowHint(
                    String.Format(
                        "The pointer is over the {0} object.", 
                        hitInfo.AxisTitle.GetType().ToString()
                    )
                );
            else
                tooltipController.HideHint();
        }
    }
}
See Also