AESizeOfNthItem(_:_:_:_:)

Declaration

func AESizeOfNthItem(_ theAEDescList: UnsafePointer<AEDescList>!, _ index: Int, _ typeCode: UnsafeMutablePointer<DescType>!, _ dataSize: UnsafeMutablePointer<Size>!) -> OSErr

Parameters

• theAEDescList:

  A pointer to the descriptor list containing the descriptor. See Aedesclist.

• index:

  A one-based positive integer indicating the position of the descriptor to get the data size for. AESizeOfNthItem returns an error if you pass zero, a negative number, or a value that is out of range.

• typeCode:

  A pointer to a descriptor type. On return, specifies the descriptor type of the descriptor. For a list of AppleScript’s predefined descriptor types, see 1542788 Descriptor_type_constants. See Desctype.

• dataSize:

  A pointer to a size variable. On return, the length (in bytes) of the data in the descriptor.

Return Value

A result code. See Result Codes.

Discussion

Thread safe starting in OS X v10.2.

See Also

Getting the Sizes and Descriptor Types of Descriptors

• AESizeOfAttribute(_:_:_:_:)
• AESizeOfParam(_:_:_:_:)