---
title: "FocusEventModifier"
description: "A [modifier][Modifier.Element] that can be used to observe focus state events."
type: "interface"
---

<div class='type'>Interface</div>


<a id='references'></a>

<div class='sourceset sourceset-common'>Common</div>


> **Deprecated** Use FocusEventModifierNode instead


```kotlin
@JvmDefaultWithCompatibility
interface FocusEventModifier : Modifier.Element
```


A `modifier` that can be used to observe focus state events.


## Functions

```kotlin
fun onFocusEvent(focusState: FocusState)
```


A callback that is called whenever the focus system raises events.