[**Kvaser CanKing GUI Extensions SDK v7.5.1**](../../README.md)

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[Kvaser CanKing GUI Extensions SDK](../../modules.md) / [hooks](../README.md) / useSessionDataSlice

# Function: useSessionDataSlice()

> **useSessionDataSlice**\<`T`\>(`id`, `slice`, `defaultValue`, `loadedCallback?`): \[`T`, `Dispatch`\<`SetStateAction`\<`T`\>\>, `boolean`\]

A hook for persistent (session) data tied to a specific view slice.

## Type Parameters

### T

`T`

## Parameters

### id

`number`

The unique id of the view.

### slice

`string`

The slice name for the session data.

### defaultValue

The default value or a function that returns the default value.

`T` | () => `T`

### loadedCallback?

(`value`) => `void`

Optional callback invoked once after data is loaded.

## Returns

\[`T`, `Dispatch`\<`SetStateAction`\<`T`\>\>, `boolean`\]

[state, setState, loaded]  the current data, setter, and loaded flag.