# HasTrickleDownHandlers()

> Returns true if event handlers, for the event propagation TrickleDown phase, are attached to this object.

## Definition

* **Type:** Method
* **Namespace:** [UnityEngine.UIElements](/engine/6000.3/script-reference/unityengine/uielements.md)
* **Assembly:** UnityEngine.UIElementsModule

```csharp
bool HasTrickleDownHandlers()
```

### Returns

| Type                                                          | Description                                                              |
| ------------------------------------------------------------- | ------------------------------------------------------------------------ |
| [bool](https://learn.microsoft.com/dotnet/api/system.boolean) | True if the object already has event handlers for the TrickleDown phase. |