Undo/redo transaction

Y

Yevgeny Barkovsky

Hello everybody!

I have prolonged oparation with many shapes affected. From user's point of
view - this is ONE operation, so I want to wrap this operation to one
undo/redo transaction, then, if user presses undo button, all my prolonged
operation will be undid.
Is it possible, and if yes, how can I do it?
 

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