Many Windows programs let you undo/redo many changes. Can I add multi-level undo/redo to TRichEdit?

There are two solutions: (1) Write the code to track changes and implement the undo/redo actions yourself and (2) use Rich Edit 2.0 which does the work for you. See the code sample titled Adding Rich Edit 2.0 functionality to TRichEdit available on this site for solution #2. More.

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