can undo the operation, very beautiful, I feel very satisfied, please help netizens can support

Packet : 23825784undoredodemo.zip filelist
ActionBase.h
ActionDragBox.cpp
ActionDragBox.h
ActionHistory.cpp
ActionHistory.h
MainFrm.cpp
MainFrm.h
ReadMe.txt
Resource.h
res/Toolbar.bmp
res/UndoRedo.ico
res/UndoRedo.rc2
res/UndoRedoDoc.ico
StdActions.h
StdAfx.cpp
StdAfx.h
UndoRedo.aps
UndoRedo.clw
UndoRedo.cpp
UndoRedo.dsp
UndoRedo.dsw
UndoRedo.h
UndoRedo.ncb
UndoRedo.opt
UndoRedo.plg
UndoRedo.rc
UndoRedoDoc.cpp
UndoRedoDoc.h
UndoRedoView.cpp
UndoRedoView.h

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