Register as Login Item with Cocoa?

Question

Google gave me: http://developer.apple.com/samplecode/LoginItemsAE/index.html

And I figured there must be a better way than using AppleScript Events.

So I do

Answer 1

SMLoginItemSetEnabled is another modern option, see Modern Login Items article by Cory Bohon where he explains that you have to create a helper application whose sole purpose is to launch the main application. There's also a full step by step explanation in SMLoginItemSetEnabled - Start at Login with App Sandboxed on Stack Overflow.