In MFC how to achieve multilevel undo/redo operations for CRichEditCtrl?

[Lost User]

I am typing the text and changing the color using SetSel() and SetSelectionFormat().On clicking ctrl+z single time I need to delete that text.I dont want to remember SetSel() and SetSelectionFormat() operations for undo. When I do ctrl+z second time, I need to do redo operation? How to achieve this? Or How to achieve multilevel undo/redo operations for CRichEditCtrl?

[Victor Nijegorodov]

Have a look at [Undo/Redo Manager](https://www.codeguru.com/cpp/misc/misc/article.php/c399/UndoRedo-Manager.htm)

[_Flaviu]

You can find here a sample of how to use CRichEditCtrl with multiple level of undo/redo operations: How to Use RichEditControl 4.1 in CRichEditView[^].