Does anybody know how to make a toolbar which style is like top bar of "Xcode Organizer"? Press different item ,different view will show down below. It has toolbar style but tab bar function,Many mac apps' preference pane use it,I'm confused. Can anybody help me please. Thank you very much. Plus this is a Mac Application
Start with the documentation for NSToolbar. There are even some sample applications to get started with.
Good overview for making a better preferences window - see the link to a demo project on the second page of this article.