System/Library/PrivateFrameworks/PrintKitUI.framework

UIPrintPreviewFlowLayout.h

Download UIPrintPreviewFlowLayout.h

1. NSObject
2. >
3. UICollectionViewLayout
4. >
5. UICollectionViewFlowLayout

@interface UIPrintPreviewFlowLayout : UICollectionViewFlowLayout

- (BOOL)flipsHorizontallyInOppositeLayoutDirection;

@end