How to (programmatically) change slides in the current Keynote presentation?

Question

I am working on a Cocoa application that I would like to use remotely (on the same computer, from a different process), which slide is displayed in the current Apple iWork '09 Keynote presentation.

How do I approach this?

Answer 1

The Keynote Applescript dictionary has a preliminary command. Using:

Tell application "Keynote" 
advance 
end tell

seems to do what you need. You can use a script bridge or NSApplescript to run this script from a Cocoa application.