Programming Mac OS X:
Objective-C and Cocoa

Jonathan 'Wolf' Rentzsch

Tuesday April 27th 2004 at 7:00pm
College of DuPage Bldg OCC Rm 128 B


Cocoa is Mac OS X's built-in object-oriented application framework. Written in Objective-C, it is perhaps the most mature and advanced desktop application framework in existence. You can think of it as OpenStep: The Next Generation. Cocoa isn't magic and Objective-C isn't a super-language. Far from it. Together, we'll step through an introduction of Objective-C, the language, highlighting its pros and cons. For the second part, we'll explore the Cocoa itself, both from the framework level and the toolkit level (Xcode and Interface Builder).

Speaker Bio

Jonathan 'Wolf' Rentzsch ( runs Red Shed Software (, a small local software boutique. He also leads PSIG (, a suburban Mac programmer group and cohosts CAWUG (, a downtown Mac & WebObjects programmer group.

Getting to the meeting

The next general meeting of UniForum Chicago will be from 7:00 p.m. to 9:00 p.m. on Tuesday, April 27th, 2004, at the College of DuPage, building OCC - rooms 128 B.

        College of DuPage
        Building OCC, Rm 128 B
        22nd and Lambert
        Glen Ellyn, IL 60137-6599
Take 355 to Butterfield Rd (Rt 56).
Take Butterfield West to Lambert Rd, then Lambert Rd North to 22nd St.
Turn left and look for Lots 9 or 10 on the left side of 22nd St.
Walk south to Building OCC, Room 128 B is near the mid north-west corner of the building.

All UniForum Chicago general meetings are open to the public free of charge

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David Young at (630) 357-5963 or

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