---
title: AEEventClass
framework: coreservices
role: symbol
role_heading: Type Alias
path: coreservices/aeeventclass
---

# AEEventClass

Specifies the event class of an Apple event.

## Declaration

```swift
typealias AEEventClass = FourCharCode
```

## Discussion

Discussion Apple events are identified by their event class and event ID attributes. The event class is the attribute that identifies a group of related Apple events. When you call the AEProcessAppleEvent(_:) function, the Apple Event Manager uses these attributes to identify a handler for a specific Apple event. For more information on Apple event classes, see Event Class Constants.