Information Technology Reference
In-Depth Information
File and Edit headers. This isn't a useful thing to do, but it demonstrates how the hierarchy is organized and
how you can modify it to create your own menu and UI designs.
FIGURE 7.33
The default OS X application nib is more complex than the iOS equivalent, and it illustrates how objects can be
arranged in a tree structure.
TIP
Note that the minimal OS X app includes a Font Manager object. This object doesn't appear immediately in the
app's UI, but it handles font changes for applications that use text. It's another example of an object that's pre-in-
stantiated in a nib file so it doesn't have to be created in code. For information about the other objects in this nib,
see Chapter 8.
Comparing IB in Xcode 4 with Xcode 3
If you're used to the version of IB in Xcode 3, this section contains a summary of the changes in Xcode 4.
Xcode 4 can feel very different. In fact, it's recognizably similar, but the features have moved to different loca-
tions. Here are the key differences:
