Inside Macintosh: Interapplication Communication /

Chapter 6 - Resolving and Creating Object Specifier Records

Descriptor Records Used in Object Specifier Records

An object specifier record is a coerced AE record of descriptor type typeObjectSpecifier. The data to which its data handle refers consists of four keyword-specified descriptor records:

Keyword	Value	Description of data
keyAEDesiredClass	'want'	A four-character code for the object class
keyAEContainer	'from'	An object specifier record (or in some cases a descriptor record with a handle whose value is NIL) that identifies the container for the requested objects
keyAEKeyForm	'form'	A four-character code for the key form
keyAEKeyData	'seld'	Data or nested descriptor records that specify a property, name, position, range, or test, depending on the key form

This section describes the descriptor types and data associated with each of these keywords. You need this information if your application resolves or creates object specifier records.

For a summary of the descriptor types and key forms discussed in this section, see
Table 6-11 on page 6-89. For an overview of object specifier records, see "Working With Object Specifier Records," which begins on page 3-27.

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Subtopics

Object Class

Container

Key Form

Key Data

Key Data for a Unique ID