---
title: alignmentMask
framework: appkit
role: symbol
role_heading: Type Property
path: appkit/nslayoutconstraint/formatoptions/alignmentmask
---

# alignmentMask

Bit mask that can be combined with an NSLayoutConstraint.FormatOptions variable to yield only the alignment portion of the format options.

## Declaration

```swift
static var alignmentMask: NSLayoutConstraint.FormatOptions { get }
```

## See Also

### Constants

- [alignAllLeft](appkit/nslayoutconstraint/formatoptions/alignallleft.md)
- [alignAllRight](appkit/nslayoutconstraint/formatoptions/alignallright.md)
- [alignAllTop](appkit/nslayoutconstraint/formatoptions/alignalltop.md)
- [alignAllBottom](appkit/nslayoutconstraint/formatoptions/alignallbottom.md)
- [alignAllLeading](appkit/nslayoutconstraint/formatoptions/alignallleading.md)
- [alignAllTrailing](appkit/nslayoutconstraint/formatoptions/alignalltrailing.md)
- [alignAllCenterX](appkit/nslayoutconstraint/formatoptions/alignallcenterx.md)
- [alignAllCenterY](appkit/nslayoutconstraint/formatoptions/alignallcentery.md)
- [alignAllLastBaseline](appkit/nslayoutconstraint/formatoptions/alignalllastbaseline.md)
- [alignAllFirstBaseline](appkit/nslayoutconstraint/formatoptions/alignallfirstbaseline.md)
- [directionLeadingToTrailing](appkit/nslayoutconstraint/formatoptions/directionleadingtotrailing.md)
- [directionLeftToRight](appkit/nslayoutconstraint/formatoptions/directionlefttoright.md)
- [directionRightToLeft](appkit/nslayoutconstraint/formatoptions/directionrighttoleft.md)
- [directionMask](appkit/nslayoutconstraint/formatoptions/directionmask.md)