---
title: "MultiLayerViewer..::.Undoing Event"
canonical: https://www.graphicsmill.com/docs/gm5/E_Aurigma_GraphicsMill_WinControls_MultiLayerViewer_Undoing.htm
product: "Graphics Mill 5.5 for .NET"
---

This documentation is for the old version. [Go to the latest Graphics Mill docs](https://www.graphicsmill.com/docs/gm/)

# MultiLayerViewer.Undoing Event
 
Raised when an action is going to be undone.
 
**Namespace:** [Aurigma.GraphicsMill.WinControls](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_WinControls.htm.md)
 **Assembly:** Aurigma.GraphicsMill.WinControls.VectorObjects (in Aurigma.GraphicsMill.WinControls.VectorObjects.dll)
 
## Syntax
  
```
Public Event Undoing As StateRestoringEventHandler
```
 
```csharp
public event StateRestoringEventHandler Undoing
```
 
### Implements
 
[IStateNavigable.Undoing](https://www.graphicsmill.com/docs/gm5/E_Aurigma_GraphicsMill_IStateNavigable_Undoing.htm.md)
   
## See Also

### Reference

- [MultiLayerViewer Class](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_WinControls_MultiLayerViewer.htm.md)
- [Aurigma.GraphicsMill.WinControls Namespace](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_WinControls.htm.md)