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UndoApply method

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Performs an Undo operation restoring previous sound contents.


In order to save system memory, by default Undo operations are disabled: you can enable them through the UndoEnable method and to know if a backup of previous sound contents is available through the UndoIsAvailable method.


A successful call to this method will fire the SoundEditStarted event followed by the SoundEditDone event.





[Visual Basic]

control.UndoApply (

) as enumErrorCodes



short control.UndoApply (




Return value






Negative value

An error occurred, check the LastError property value in order to see the error code meaning

enumErrorCodes.ERR_NOERROR (0)

The method call was successful.