---
title: "LazyLayoutCacheWindow"
description: "A Dp based [LazyLayoutCacheWindow]."
type: "function"
---

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


<a id='references'></a>
<div class='sourceset sourceset-common'>Common</div>


```kotlin
@ExperimentalFoundationApi
fun LazyLayoutCacheWindow(ahead: Dp = 0.dp, behind: Dp = 0.dp): LazyLayoutCacheWindow
```


A Dp based `LazyLayoutCacheWindow`.

#### Parameters

| | |
| --- | --- |
| ahead | The size of the ahead window to be used as per `LazyLayoutCacheWindow.calculateAheadWindow`. |
| behind | The size of the behind window to be used as per `LazyLayoutCacheWindow.calculateBehindWindow`. |




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


```kotlin
@ExperimentalFoundationApi
fun LazyLayoutCacheWindow(
    @FloatRange(from = 0.0) aheadFraction: Float = 0.0f,
    @FloatRange(from = 0.0) behindFraction: Float = 0.0f,
): LazyLayoutCacheWindow
```


Creates a `LazyLayoutCacheWindow` based off a fraction of the viewport.

#### Parameters

| | |
| --- | --- |
| aheadFraction | The fraction of the viewport to be used for the ahead window. |
| behindFraction | The fraction of the viewport to be used for the behind window. |