Hints and Tooltips
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The PivotGridControl supports hints (tooltips) for field headers, field values, and cells. Hints are displayed if text within an element’s region is clipped.
- Customizing Tooltips using Properties
- Customizing Tooltips using the Event
- Customizing Tooltips using the Tooltip Controller
Customizing Tooltips using Properties
Hints are usually displayed when an end-user hovers the mouse pointer over a visual element (for example, a field header or cell) whose contents are truncated. The image below shows a hint for a truncated field header.
The Pivot Grid provides a set of options that specify which elements can display hints. To access these options, use the PivotGridControl.OptionsHint property. The table below lists these options and their descriptions.
| Option | Description |
|---|---|
| PivotGridOptionsHint.ShowCellHints | Specifies whether hints are displayed for cells with truncated content. |
| PivotGridOptionsHint.ShowHeaderHints | Specifies whether hints are displayed for field headers with truncated captions. |
| PivotGridOptionsHint.ShowValueHints | Specifies whether hints are displayed for field values that are truncated. |
It is also possible to specify custom hints using each field’s PivotGridField.ToolTips property. This property returns the PivotGridFieldToolTips object that allows you to specify the hint that is displayed when you hover over a field’s header and values.
Note that you can use the Tooltip Controller to manage the tooltips of all DevExpress controls and elements. To learn more, see Tooltip Controller.
Customizing Tooltips using the Event
The PivotGridControl.FieldTooltipShowing event occurs when a tooltip is about to be invoked, for example, when an end-user hovers the mouse over a trimmed caption. This event allows you to cancel invoking the tooltip, or specify the hint’s custom text.
You can define which element is located at particular screen coordinates using the event’s PivotFieldTooltipShowingEventArgs.HitInfo property. See Hit Information to learn more about defining of visual elements.
The following PivotFieldTooltipShowingEventArgs properties provide information specific to this event:
| Option | Description |
|---|---|
| PivotFieldTooltipShowingEventArgs.HitInfo | Gets information about the point where the tooltip should be invoked. |
| PivotFieldTooltipShowingEventArgs.Point | Gets the coordinates of the point where the tooltip should be invoked. |
| PivotFieldTooltipShowingEventArgs.ShowTooltip | Gets or sets whether to show the tooltip. |
| PivotFieldTooltipShowingEventArgs.Text | Gets or sets the tooltip text. |
Customizing Tooltips using the Tooltip Controller
Tooltips can be managed by using the ToolTipController component, which provides the hint settings. It allows you to customize hint appearances, specify icons displayed in hints and set the time interval between invoking/hiding hints, etc. To learn how to use this component, see the Tooltips section.