All Manuals > LispWorks Objective-C and Cocoa Interface User Guide and Reference Manual > 1 Introduction to the Objective-C Interface > 1.4 Defining Objective-C classes and methods

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1.4.9 Using and declaring formal protocols

Classes defined by define-objc-class can be made to support Objective-C formal protocols by specifying the :objc-protocols class option. All the standard formal protocols from Mac OS X 10.4 are predefined.

Note: It is not possible to define new protocols entirely in Lisp on Mac OS X 10.5 and later, but existing protocols can be declared using the define-objc-protocol macro.

 


LispWorks Objective-C and Cocoa Interface User Guide and Reference Manual - 15 Dec 2011

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