Clearing the Undo Stack in a Macro

In Word, you can use the UndoClear method with the ActiveDocument object in order to clear the Undo stack. If you are programming macros in Excel's flavor of VBA, you may wonder if there is a similar method for use in Excel.

Excel VBA doesn't provide a method like UndoClear. The reason is because the undo stack is automatically cleared by Excel whenever your macro makes a change (any change) to the workbook. If your macro doesn't make any changes, and you still want it to clear the undo stack, then all you need to do is make an innocuous change to the worksheet. For instance, the following macro copies the contents of cell A1 back into A1, and in the process clears the undo stack:

Sub ClearUndo()
    Range("A1").Copy Range("A1")
End Sub