---
title: Event Source Constants
framework: coreservices
role: collectionGroup
path: coreservices/apple_events/1527201-event_source_constants
---

# Event Source Constants

Identify how an Apple event was delivered.

## Overview

Overview For an example of how you might use these constants with the AEGetAttributePtr(_:_:_:_:_:_:_:) function, see the data type AEEventSource.

## Topics

### Constants

- [kAEUnknownSource](coreservices/kaeunknownsource.md)
- [kAEDirectCall](coreservices/kaedirectcall.md)
- [kAESameProcess](coreservices/kaesameprocess.md)
- [kAELocalProcess](coreservices/kaelocalprocess.md)
- [kAERemoteProcess](coreservices/kaeremoteprocess.md)