Specify types for Boolean and character descriptors.
- macOS 10.0+
- Mac Catalyst 13.0+
- Core Services
The constants described here specify the data type for a descriptor and show the kind of data stored in a descriptor with that type.
Descriptors are the building blocks used by the Apple Event Manager to construct Apple event attributes and parameters. A descriptor is a data structure of type
AEDesc, which consists of data storage and a descriptor type that identifies the type of the data. A descriptor type is defined by the data type
AppleScript defines descriptor type constants for a wide variety of common data types. For additional types, see Descriptor Type Constants and Numeric Descriptor Type Constants. For a complete listing, including data types such as units of length, weight, and volume, see the Apple Event Manager and Open Scripting Architecture header files.
type type is deprecated in favor of
type. For more information, see