---
title: mayBegin
framework: appkit
role: symbol
role_heading: Type Property
path: appkit/nsevent/phase-swift.struct/maybegin
---

# mayBegin

The system event phase may begin.

## Declaration

```swift
static var mayBegin: NSEvent.Phase { get }
```

## See Also

### Constants

- [began](appkit/nsevent/phase-swift.struct/began.md)
- [stationary](appkit/nsevent/phase-swift.struct/stationary.md)
- [changed](appkit/nsevent/phase-swift.struct/changed.md)
- [ended](appkit/nsevent/phase-swift.struct/ended.md)
- [cancelled](appkit/nsevent/phase-swift.struct/cancelled.md)