1993-04-22
1997-08-19
Kriess, Kevin A.
395682, G06F 3033, G06F 944
Patent
active
056597479
ABSTRACT:
A multiple-level undo/redo mechanism is provided in an operating system and is available to application programs run on the operating system. The operating system provides a mechanism for keeping a log of user commands and providing a cursor to a position within the log. Each command may be encapsulated into an object that supports an interface for performing undo/redo operations. Similarly, the log may be encapsulated into an object that supports operations that facilitate a multiple-level undo/redo. A user may perform a single undo/redo operation, multiple successive undo/redo operations or complete undo/redo operations.
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Chavis John I.
Kriess Kevin A.
Microsoft Corporation
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