Associated article: An Unlimited Undo/Redo Stack Pattern For PowerBuilder
Unpublished source code accompanying the article by David Van Camp in which he presents a technique for providing unlimited undo and redo capabilities to windows developed using PowerBuilder. In doing so, he uses design patterns to provide a simple, standardized approach which is easily understood and highly adaptable to a variety of specific problems. Requires UNZIP/PKUNZIP to extract.
Table Of Contents: README.DOC UNDOREDO.PBL UNDOREDO.PPT UNDOREDO.DB UNDOREDO.LOG