# GetTooltip

> Customize the tooltip displayed when the mouse hovers the node name label.

## Definition

* **Type:** Event
* **Namespace:** [Unity.Hierarchy](/engine/6000.6/script-reference/unity/hierarchy.md)
* **Assembly:** UnityEngine.HierarchyModule

```csharp
public event HierarchyView.GetTooltipEventHandler GetTooltip
```

### Remarks

This callback receives the [HierarchyView](/engine/6000.6/script-reference/unity/hierarchy/hierarchyview.md) and the [HierarchyViewItem](/engine/6000.6/script-reference/unity/hierarchy/hierarchyviewitem.md) to get the tooltip for, a StringBuilder to build the tooltip, and whether the [HierarchyView](/engine/6000.6/script-reference/unity/hierarchy/hierarchyview.md) is being filtered.