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# OnDialogueStartedAsync()

Method in [VoiceOverPresenter](/3.1/api/csharp/yarn.unity/yarn.unity.voiceoverpresenter.md)

## Summary

Called by the [DialogueRunner](/3.1/api/csharp/yarn.unity/yarn.unity.dialoguerunner.md) to signal that dialogue has started.

```csharp
public override YarnTask OnDialogueStartedAsync()
```

## Remarks

This method is called before any content (that is, lines, options or commands) are delivered.

This method is a good place to perform tasks like preparing on-screen dialogue UI (for example, turning on a letterboxing effect, or making dialogue UI elements visible.)

{% hint style="info" %}
The default implementation of this method does nothing.
{% endhint %}

## Returns

A task that represents any work done by this dialogue presenter in order to get ready for dialogue to run.