---
title: "IVObjectHost Properties "
canonical: https://www.graphicsmill.com/docs/gm5/Properties_T_Aurigma_GraphicsMill_WinControls_IVObjectHost.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/)
# IVObjectHost Properties
The [IVObjectHost](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_WinControls_IVObjectHost.htm.md) type exposes the following members.
## Properties
| | Name | Description |
| --- | --- | --- |
|  | [CanRedo](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_IStateNavigable_CanRedo.htm.md) | Indicates if last reverted action can be redone.
(Inherited from [IStateNavigable](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_IStateNavigable.htm.md).) |
|  | [CanUndo](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_IStateNavigable_CanUndo.htm.md) | Indicates if last change can be undone.
(Inherited from [IStateNavigable](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_IStateNavigable.htm.md).) |
|  | [CurrentDesigner](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_WinControls_IVObjectHost_CurrentDesigner.htm.md) | Gets/sets the currently active designer. |
|  | [CurrentLayer](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_WinControls_IVObjectHost_CurrentLayer.htm.md) | Gets/sets the currently selected layer. |
|  | [CurrentLayerIndex](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_WinControls_IVObjectHost_CurrentLayerIndex.htm.md) | Gets/sets the index of the currently selected layer. |
|  | [DefaultDesigner](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_WinControls_IVObjectHost_DefaultDesigner.htm.md) | Gets the default designer associated with the host object. |
|  | [DesignerOptions](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_WinControls_IVObjectHost_DesignerOptions.htm.md) | Gets options available to all designers. |
|  | [HostViewer](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_WinControls_IVObjectHost_HostViewer.htm.md) | Gets a reference to a currently used viewer control. |
|  | [Layers](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_WinControls_IVObjectHost_Layers.htm.md) | Returns the layer collection of an object. |
|  | [MaxUndoStepCount](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_IStateNavigable_MaxUndoStepCount.htm.md) | Gets/sets maximum number of available undo steps (levels).
(Inherited from [IStateNavigable](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_IStateNavigable.htm.md).) |
|  | [RedoStepCount](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_IStateNavigable_RedoStepCount.htm.md) | Returns number of available redo levels (i.e. how much time method [Redo()](https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_IStateNavigable_Redo.htm.md) can be called).
(Inherited from [IStateNavigable](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_IStateNavigable.htm.md).) |
|  | [UndoRedoEnabled](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_IStateNavigable_UndoRedoEnabled.htm.md) | Enables or disables undo/redo functionality.
(Inherited from [IStateNavigable](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_IStateNavigable.htm.md).) |
|  | [UndoRedoTrackingEnabled](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_IStateNavigable_UndoRedoTrackingEnabled.htm.md) | Enables or disables the automatic change tracking.
(Inherited from [IStateNavigable](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_IStateNavigable.htm.md).) |
|  | [UndoStepCount](https://www.graphicsmill.com/docs/gm5/P_Aurigma_GraphicsMill_IStateNavigable_UndoStepCount.htm.md) | Returns number of available undo levels (i.e. how much time method [Undo()](https://www.graphicsmill.com/docs/gm5/M_Aurigma_GraphicsMill_IStateNavigable_Undo.htm.md) can be called).
(Inherited from [IStateNavigable](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_IStateNavigable.htm.md).) |
## See Also
### Reference
- [IVObjectHost Interface](https://www.graphicsmill.com/docs/gm5/T_Aurigma_GraphicsMill_WinControls_IVObjectHost.htm.md)
- [Aurigma.GraphicsMill.WinControls Namespace](https://www.graphicsmill.com/docs/gm5/N_Aurigma_GraphicsMill_WinControls.htm.md)