ToolTipRelativePosition Class
Specifies a tooltip position near the chart element, for which this tooltip is invoked.
Namespace: DevExpress.XtraCharts
Assembly: DevExpress.XtraCharts.v20.1.dll
NuGet Packages: DevExpress.Charts, DevExpress.WindowsDesktop.Charts
Declaration
Remarks
Use the ToolTipOptions.ToolTipPosition property to access the ToolTipRelativePosition object.
To learn more on tooltips, see the Tooltips topic.
Example
This example demonstrates how to enable and customize chart tooltips at runtime.
To enable tooltips, set the ChartControl.ToolTipEnabled property to true.
To learn more on chart tooltips, see the Tooltips topic.
Note
A complete sample project is available at https://github.com/DevExpress-Examples/how-to-show-and-customize-chart-tooltips-t198819
using DevExpress.XtraCharts;
using System;
using System.Windows.Forms;
using DevExpress.Utils;
namespace TooltipCustomization {
public partial class Form1 : Form {
public Form1() {
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e) {
// Create an empty chart.
ChartControl chartControl = new ChartControl();
// Add the chart to the form.
chartControl.Dock = DockStyle.Fill;
this.Controls.Add(chartControl);
// Create a series and add points to it.
Series series1 = new Series("Series 1", ViewType.Bar);
series1.Points.Add(new SeriesPoint("A", new double[] { 4 }));
series1.Points.Add(new SeriesPoint("B", new double[] { 2 }));
series1.Points.Add(new SeriesPoint("C", new double[] { 17 }));
series1.Points.Add(new SeriesPoint("D", new double[] { 4 }));
series1.Points.Add(new SeriesPoint("E", new double[] { 17 }));
series1.Points.Add(new SeriesPoint("F", new double[] { 12 }));
series1.Points.Add(new SeriesPoint("G", new double[] { 15 }));
// Add the series to the chart.
chartControl.Series.Add(series1);
// Disable a crosshair cursor.
chartControl.CrosshairEnabled = DefaultBoolean.False;
// Enable chart tooltips.
chartControl.ToolTipEnabled = DefaultBoolean.True;
// Show a tooltip's beak
ToolTipController controller = new ToolTipController();
chartControl.ToolTipController = controller;
controller.ShowBeak = true;
// Change the default tooltip mouse position to relative position.
ToolTipRelativePosition relativePosition = new ToolTipRelativePosition();
chartControl.ToolTipOptions.ToolTipPosition = relativePosition;
// Specify the tooltip relative position offsets.
relativePosition.OffsetX = 2;
relativePosition.OffsetY = 2;
// Specify the tooltip point pattern.
series1.ToolTipPointPattern = "Bar Series: {A}:{V}";
}
}
}