I\'m currently trying to use a new view-based NSOutlineView in my Cocoa app. As I\'m not using bindings, so I implemented all required delegate and datasource methods in my cont
I have created a little sample project which includes a source list and also uses the -outlineView:isGroupItem:
method as @boaz-stuller has suggested.
Check out besi/mac-quickies on github. Most of the stuff is either done in IB or can be found in the AppDelegate