How to (programatically) change slides in a running Keynote presentation?

Question

I'm working on a Cocoa application I'd like to use to remotely (on the same machine, from a different process) control which slide is currently displayed in a running Apple iWork '09 Keynote presentation.

How should I approach this?

Answer 1

The Keynote Applescript dictionary has an advance command. Using:

Tell application "Keynote" 
advance 
end tell

seems to do what you require. You can either use scripting bridge or NSApplescript to run this script from within a Cocoa application.