TooltipFormat
Definition of the formatting of the tooltips.
Schema: tchmi:framework#/definitions/Function
The selected function defines the tooltip display. It is called as soon as the mouse cursor is positioned on a point and/or an error. In addition, it contains the current timestamp of the mouse, which is specified in milliseconds, a list of points and a list of errors. The respective list is empty if there are no points or errors at this position.
A function must fulfill the following signature in order to be offered in the engineering. The parameters mentioned here are set by the control. Further parameters are possible and can be specified per instance in the engineering.
[ Function ]
TooltipFormat(actTime: number, points: TcHmiTrendLineChart.TooltipInformationObject[], errors: TcHmiTrendLineChart.TooltipErrorInformationObject[]): string;
Parameter
Name | Type | Description |
|---|---|---|
actTime | The current timestamp of the mouse position in milliseconds since 1.1.1970. | |
points | The recorded points located at the mouse position (within the point radius). | |
errors | The recorded errors located at the mouse position. |
Return value
Type | Description |
|---|---|
The tooltip to be displayed. HTML is allowed here. |
Origin: Trend Line Chart
See also
Attribute getter: getTooltipFormat
Attribute setter: setTooltipFormat
 | Available from version 1.10 |