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# DragDropPreviewsFormation

On macOS, describes the way the dragged previews are visually composed.
Both drag sources and drop destination can specify their desired preview formation.

```
struct DragDropPreviewsFormation
```

## Topics

### Type Properties

[`static let `default`: DragDropPreviewsFormation`](/documentation/SwiftUI/DragDropPreviewsFormation/default)

System-determined composition.

[`static let list: DragDropPreviewsFormation`](/documentation/SwiftUI/DragDropPreviewsFormation/list)

Drag images are laid out vertically, non-overlapping, and the left edges are aligned.

[`static let none: DragDropPreviewsFormation`](/documentation/SwiftUI/DragDropPreviewsFormation/none)

Drag images maintain their set positions relative to each other.

[`static let pile: DragDropPreviewsFormation`](/documentation/SwiftUI/DragDropPreviewsFormation/pile)

Drag images are placed on top of each other with random rotations.

[`static let stack: DragDropPreviewsFormation`](/documentation/SwiftUI/DragDropPreviewsFormation/stack)

Drag images are laid out overlapping diagonally.

## Relationships

### Conforms To

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

[`Escapable`](/documentation/Swift/Escapable)

[`Hashable`](/documentation/Swift/Hashable)

[`Copyable`](/documentation/Swift/Copyable)

[`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible)

[`Equatable`](/documentation/Swift/Equatable)

[`Sendable`](/documentation/Swift/Sendable)

---

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