---
title: DescType
framework: coreservices
role: symbol
role_heading: Type Alias
path: coreservices/desctype
---

# DescType

Specifies the type of the data stored in an AEDesc descriptor.

## Declaration

```swift
typealias DescType = ResType
```

## Discussion

Discussion A DescType data type is a four-character code that stores a value that identifies the data in an AEDesc descriptor, the basic building block for all Apple events. The descriptor type constants used by the Apple Event Manager are described in Descriptor Type Constants and Key Form and Descriptor Type Object Specifier Constants.