wpf-devexpress-dot-xpf-dot-charts-dot-charttooltipcontroller.md
Occurs when a tooltip is appearing.
Namespace : DevExpress.Xpf.Charts
Assembly : DevExpress.Xpf.Charts.v25.2.dll
NuGet Package : DevExpress.Wpf.Charts
public event ToolTipOpeningEventHandler ToolTipOpening
Public Event ToolTipOpening As ToolTipOpeningEventHandler
The ToolTipOpening event's data class is ChartToolTipEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| Cancel | Gets or sets a value indicating whether the event should be canceled. Inherited from CancelEventArgs. |
| ChartControl | Gets or sets a chart which represents data from different kinds of data sources. |
| Hint | Gets or sets the data representing the content of the tooltip’s hint. |
| Pattern | Gets or sets a string which represents the pattern specifying the text to be displayed within a tooltip. |
| Series | Gets or sets a series for which a tooltip appears on a diagram. |
| SeriesPoint | Gets or sets the series point for which a tooltip appears on a diagram. |
| ShowBeak | Gets or sets a value that specifies whether to show the beak of a chart tooltip or not. |
| ShowHint | Gets or sets whether to show series or a point hint in a tooltip. |
| Template | Specifies the template that defines the appearance of the tooltip on a chart. |
See Also