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error 404 undoChanged | revDocs | RunRev
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Product Edition
Version
undoChanged
Basics
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Type
Message
Syntax
undoChanged
See Also
Introduced
1.0
Environment
Desktop,Web
Platform Support
MacOS,Mac OS X,Windows,Linux
Security
None required
Summary
Sent to the current card when the Undo action changes.
Examples

on undoChanged
global lastFieldState
put field "Edit" into lastFieldState
end undoChanged

Additional Comments
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Handle the undoChanged message if you want to intercept the "Undo" menu item, providing your own Undo stack.

Comments:

Undoable actions include painting actions, deletion of objects, moving of controls, and editing actions in a field. When the user performs one of these actions, thus changing what happens as a result of choosing Edit menuUndo, Revolution sends the undoChanged message to the current card.

User Comments
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