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UndoEngine Class
Visual Studio 2010
Provides undo and redo operation implementations for designers.
Assembly: System.Activities.Presentation (in System.Activities.Presentation.dll)
The UndoEngine type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | IsUndoRedoInProgress | Gets a Boolean value that indicates whether an undo or redo operation is in process. |
| Name | Description | |
|---|---|---|
![]() | AddUndoUnit | 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 a hash function for a particular type. (Inherited from Object.) |
![]() | GetRedoActions | Retrieves an IEnumerable<T> collection of redo operations. |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | GetUndoActions | Retrieves an IEnumerable<T> collection of undo operations. |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | Redo | Removes the last UndoUnit instance from the redo stack, and performs a redo operation on the unit. The UndoUnit instance is then put into the undo stack. |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
![]() | Undo | Removes the last UndoUnit instance from the undo stack, and performs an undo operation on the unit. The UndoUnit instance is then put into the redo stack. |
| Name | Description | |
|---|---|---|
![]() | UndoRedoBufferChanged | An event that is raised when the buffers that hold undo and redo operations change. |
![]() | UndoUnitAdded | Occurs when an undo unit is added to the undo stack. |
![]() | UndoUnitDiscarded | Occurs when an undo unit is removed from the undo stack, without first performing an undo operation. |
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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