7.5 A tour of frames
7.5.3 Defining new classes of frame
As described in Section 3.4 on page 14, the define frame macro is used to create new classes of frame. The bulk of the definition of any new frame is split into several parts:
- The definition of any slots and init-keywords you want available for the new class of frame.
- The definition of any panes that should be used in the new class of frame.
- The definition of other components that you wish to include, such as a menu bar, status bar, and so on.
Slots and init-keywords can be used to let you (or the user of your applications) set the properties of any instances of the new frame class that are created.
Panes control the overall appearance of the new class of frame. You need to define panes for any GUI elements you wish to place in the frame.