a good program to help you. Interface Builder, an application supplied with Xcode, makes designing user
interfaces simple, and so turns a tedious task into something easy.
user interface for your application. You learn where to locate the tools you need and how to use the features
in Interface Builder to create the perfect user interface for your application.
your application. It contains a drag-and-drop interface for UI design, and an inspector that allows you to view
and change the properties of the various objects in your design, as well as the connections between them.
automatically when an application launches. It contains the menu bar and generally at least one window
along with various other objects. An application can have other nib files as well. Each nib file contains:
objects--meaning that the object has been encoded in such a way that it can be saved to disk (or
transmitted over a network connection to another computer) and later restored in memory. Archived
objects contain information such as their size, location, and position in the object hierarchy. At the top
of the hierarchy of archived objects is the File's Owner object, a proxy object that points to the actual
object that owns the nib file (typically the one that loaded the nib file from disk).
(such as a button or image view).
static palettes, but it does not know how to archive instances of your custom classes since it doesn't
have access to the code. For these classes, Interface Builder stores a proxy object to which it attaches
your custom class information.
Connector objects special to Interface Builder store this information. When you save a document, its
connector objects are archived in the nib file along with the objects they connect.