---
title: "ExposedDropdownMenuBoxScope"
description: "Scope for [ExposedDropdownMenuBox]."
type: "class"
---

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


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

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


```kotlin
@ExperimentalMaterialApi
abstract class ExposedDropdownMenuBoxScope
```


Scope for `ExposedDropdownMenuBox`.


## Functions

```kotlin
abstract fun Modifier.exposedDropdownSize(matchTextFieldWidth: Boolean = true): Modifier
```


Modifier which should be applied to an `ExposedDropdownMenu` placed inside the scope. It's
responsible for setting the width of the `ExposedDropdownMenu`, which will match the width of
the `TextField` (if `matchTextFieldWidth` is set to true). Also it'll change the height of
`ExposedDropdownMenu`, so it'll take the largest possible height to not overlap the
`TextField` and the software keyboard.

#### Parameters

| | |
| --- | --- |
| matchTextFieldWidth | Whether menu should match the width of the text field to which it's attached. If set to true the width will match the width of the text field. |



```kotlin
@Composable
    fun ExposedDropdownMenu(
        expanded: Boolean,
        onDismissRequest: () -> Unit,
        modifier: Modifier = Modifier,
        scrollState: ScrollState = rememberScrollState(),
        content: @Composable ColumnScope.() -> Unit,
    )
```


Popup which contains content for Exposed Dropdown Menu. Should be used inside the content of
`ExposedDropdownMenuBox`.

#### Parameters

| | |
| --- | --- |
| expanded | Whether the menu is currently open and visible to the user |
| onDismissRequest | Called when the user requests to dismiss the menu, such as by tapping outside the menu's bounds |
| modifier | The modifier to apply to this layout |
| scrollState | a `ScrollState` to used by the menu's content for items vertical scrolling |
| content | The content of the `ExposedDropdownMenu` |