These constants specify frame progression types.
SDKs
- iOS 3.2+
- macOS 10.5+
- Mac Catalyst 13.0+Beta
- tvOS 9.0+
- watchOS 2.2+
Framework
- Core Text
Declaration
enum CTFrameProgression : UInt32
Overview
The lines of text within a frame may be stacked for either horizontal or vertical text. Values are enumerated for each stacking type supported by CTFrame. Frames created with a progression type specifying vertical text rotate lines 90 degrees counterclockwise when drawing.