---
title: FSEventStreamEventFlags
framework: Core Services
role: symbol
role_heading: Type Alias
platforms: [Mac Catalyst 13.0+, macOS 10.5+]
path: coreservices/fseventstreameventflags
---

# FSEventStreamEventFlags

## Declaration

```swift
typealias FSEventStreamEventFlags = UInt32
```

## Discussion

Discussion Flags that can be passed your FSEventStreamCallback function.