IVsUndoTrackingEvents Interface
An IOleUndoManager client can expose this interface to be informed when the undo stack has returned to an unmodified state (that is, no data-changing modifications exist) by the undo manager.
Namespace: Microsoft.VisualStudio.TextManager.Interop
Assembly: Microsoft.VisualStudio.TextManager.Interop (in microsoft.visualstudio.textmanager.interop.dll)
Assembly: Microsoft.VisualStudio.TextManager.Interop (in microsoft.visualstudio.textmanager.interop.dll)