Chapter 18 Sheets

18.2 Basic Sheet Classes

There are no standard sheet classes in CLIM, and no pre-packaged way to create sheets in general. If a programmer needs to create an instance of some class of sheet, make-instance must be used. In most cases, application programmers will not deal with sheets directly, but instead will use a subclass of sheets known as panes. Panes can be created by calling the make-pane function. For a more detailed discussion on panes, see Chapter 10, "Panes and Gadgets."

sheet [Protocol Class]

The protocol class that corresponds to a sheet, a subclass of bounding-
. If you want to create a new class that behaves like a sheet, it should be a subclass of sheet. Subclasses of sheet must obey the sheet protocol.

All of the subclasses of sheet are mutable.

sheetp [Function]
Returns t if object is a sheet; otherwise, it returns nil.

basic-sheet [Class]
The basic class on which all CLIM sheets are built, a subclass of sheet. This class is an abstract class intended only to be subclassed, not instantiated.

CLIM 2.0 User's Guide - OCT 1998

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