[lazarus] Form editing: Undo/Redo

[Mattias Gaertner]

Hi all,

I want to implement Undo/Redo for the form editing, but I'm not sure how this should be done.
Normally an undolist just keeps tracks of the changes. But for example moving a control can result in changing other controls and many other things. So, for a correct undo, one have to stream the form after every move/resize/add/delete/change property operation. Or is there a better way?


Mattias