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class QLPreviewController

A specialized view for previewing an item.

class QLPreviewRequest

An opaque reference representing a preview request object.

class QLThumbnailRequest

An opaque reference representing a thumbnail request object.


protocol QLPreviewControllerDataSource

The data source for a preview controller must adopt this protocol to provide preview items to the controller.

protocol QLPreviewControllerDelegate

The delegate of a preview controller must adopt this protocol.

protocol QLPreviewItem

A protocol that defines properties you implement to make your application’s content visible in a QuickLook preview (QLPreviewController in iOS or QLPreviewPanel in macOS).

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