10.5 Gadgets
At pane creation time (that is, make-pane), the frame manager resolves the abstract class into a specific implementation class; the implementation classes specify the detailed look and feel of the gadget. Each frame manager will keep a mapping from abstract gadgets to an implementation class; if the frame manager does not implement its own gadget for the abstract gadget classes in the following sections, it will use the portable class provided by CLIM. Since every implementation of an abstract gadget class is a subclass of the abstract class, they all share the same programmer interface.
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