UndoEngine Class
Provides undo and redo operation implementations for designers.
Assembly: System.Activities.Presentation (in System.Activities.Presentation.dll)
| Name | Description | |
|---|---|---|
![]() | UndoEngine(EditingContext^) | Initializes a new instance of the UndoEngine class. |
| Name | Description | |
|---|---|---|
![]() | IsUndoRedoInProgress | Gets a Boolean value that indicates whether an undo or redo operation is in progress. |
| Name | Description | |
|---|---|---|
![]() | AddUndoUnit(UndoUnit^) | Adds the specified unit to the undo stack. |
![]() | Equals(Object^) | Determines whether the specified object is equal to the current object.(Inherited from Object.) |
![]() | Finalize() | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.) |
![]() | GetHashCode() | Serves as the default hash function. (Inherited from Object.) |
![]() | GetRedoActions() | Retrieves an IEnumerable<T> collection of redo operations. |
![]() | GetType() | |
![]() | GetUndoActions() | Retrieves an IEnumerable<T> collection of undo operations. |
![]() | MemberwiseClone() | |
![]() | Redo() | |
![]() | ToString() | Returns a string that represents the current object.(Inherited from Object.) |
![]() | Undo() |
| Name | Description | |
|---|---|---|
![]() | RedoCompleted | Occurs when the redo operation is completed. |
![]() | UndoCompleted | Occurs when the undo operation is completed. |
![]() | UndoRedoBufferChanged | Occurs when the buffers that hold undo and redo operations change. |
![]() | UndoUnitAdded | Occurs when an undo unit is added to the undo stack. |
![]() | UndoUnitCancelled | Occurs when an undo unit is cancelled from the undo stack. |
![]() | UndoUnitDiscarded | Occurs when an undo unit is removed from the undo stack, without first performing an undo operation. |
Available since 4.0
Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.



