---
title: CAConstraintAttribute.midX
framework: quartzcore
role: symbol
role_heading: Case
path: quartzcore/caconstraintattribute/midx
---

# CAConstraintAttribute.midX

The horizontal location of the center of a layer’s frame.

## Declaration

```swift
case midX
```

## See Also

### Enumeration Cases

- [CAConstraintAttribute.height](quartzcore/caconstraintattribute/height.md)
- [CAConstraintAttribute.maxX](quartzcore/caconstraintattribute/maxx.md)
- [CAConstraintAttribute.maxY](quartzcore/caconstraintattribute/maxy.md)
- [CAConstraintAttribute.midY](quartzcore/caconstraintattribute/midy.md)
- [CAConstraintAttribute.minX](quartzcore/caconstraintattribute/minx.md)
- [CAConstraintAttribute.minY](quartzcore/caconstraintattribute/miny.md)
- [CAConstraintAttribute.width](quartzcore/caconstraintattribute/width.md)