---
title: PreviewMacroBodyBuilder
framework: developertoolssupport
role: symbol
role_heading: Structure
path: developertoolssupport/previewmacrobodybuilder
---

# PreviewMacroBodyBuilder

Builder for preview body content within a #Preview macro.

## Declaration

```swift
@resultBuilder struct PreviewMacroBodyBuilder<Content>
```

## Overview

Overview warning: Using this builder outside of a #Preview macro will produce a fatal error.

## Topics

### Type Methods

- [buildBlock(_:)](developertoolssupport/previewmacrobodybuilder/buildblock(_:).md)