> For the complete documentation index, see [llms.txt](https://kinematicsoup.gitbook.io/reactor/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://kinematicsoup.gitbook.io/reactor/api-reference/ks.reactor.client.unity.editor/ks.reactor.client.unity.editor.ksbuildevents/ks.reactor.client.unity.editor.ksbuildevents.prebuildcallback.md).

# Delegate ksBuildEvents.PreBuildCallback

Namespace: [KS.Reactor.Client.Unity.Editor](/reactor/api-reference/ks.reactor.client.unity.editor.md)\
Assembly: KSUnity-Source.dll

Callback for pre-build events called before any build process starts.

```csharp
public delegate void ksBuildEvents.PreBuildCallback()
```