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# FormStyle

The appearance and behavior of a form.

```
@MainActor @preconcurrency protocol FormStyle
```

## Overview

To configure the style for a single [`Form`](/documentation/SwiftUI/Form) or for all form instances
in a view hierarchy, use the [`formStyle(_:)`](/documentation/SwiftUI/View/formStyle(_:)) modifier.

A type conforming to this protocol inherits `@preconcurrency @MainActor`
isolation from the protocol if the conformance is included in the type’s
base declaration:

```
struct MyCustomType: Transition {
    // `@preconcurrency @MainActor` isolation by default
}
```

Isolation to the main actor is the default, but it’s not required. Declare
the conformance in an extension to opt out of main actor isolation:

```
extension MyCustomType: Transition {
    // `nonisolated` by default
}
```

## Topics

### Getting built-in form styles

[`automatic`](/documentation/SwiftUI/FormStyle/automatic)

The default form style.

[`columns`](/documentation/SwiftUI/FormStyle/columns)

A non-scrolling form style with a trailing aligned column of labels
next to a leading aligned column of values.

[`grouped`](/documentation/SwiftUI/FormStyle/grouped)

A form style with grouped rows.

### Creating custom form styles

[`makeBody(configuration:)`](/documentation/SwiftUI/FormStyle/makeBody(configuration:))

Creates a view that represents the body of a form.

[`Configuration`](/documentation/SwiftUI/FormStyle/Configuration)

The properties of a form instance.

[`Body`](/documentation/SwiftUI/FormStyle/Body)

A view that represents the appearance and interaction of a form.

### Supporting types

[`AutomaticFormStyle`](/documentation/SwiftUI/AutomaticFormStyle)

The default form style.

[`ColumnsFormStyle`](/documentation/SwiftUI/ColumnsFormStyle)

A non-scrolling form style with a trailing aligned column of labels
next to a leading aligned column of values.

[`GroupedFormStyle`](/documentation/SwiftUI/GroupedFormStyle)

A form style with grouped rows.

## Relationships

### Conforming Types

[`ColumnsFormStyle`](/documentation/SwiftUI/ColumnsFormStyle)

[`GroupedFormStyle`](/documentation/SwiftUI/GroupedFormStyle)

[`AutomaticFormStyle`](/documentation/SwiftUI/AutomaticFormStyle)

---

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