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IHookHelper.OperationStack Property (ArcObjects .NET 10.6 SDK)
ArcObjects Library Reference (Controls)  

IHookHelper.OperationStack Property

Operation stack of hooked control or application used for undo/redo operations.

[Visual Basic .NET]
Public ReadOnly Property OperationStack As IOperationStack
[C#]
public IOperationStack OperationStack {get;}
[C++]
HRESULT get_OperationStack(
  IOperationStack** ppOperationStack
);
[C++]

Parameters ppOperationStack [out, retval]
ppOperationStack is a parameter of type IOperationStack**

Product Availability

Available with ArcGIS Engine.

Description

The IOperationStack of the hook passed to the ICommand::OnCreate event. The OperationStack is returned regardless of whether the hook is a ToolbarControl or ArcMap.

The property will return Nothing if the hook is a MapControl or PageLayoutControl that do not have an associated operation stack. If the hook is a ToolbarControl Nothing will be returned if the OperationStack has not been set into the ToolbarControl. A developer normally sets one ControlsOperationStack object into each IToolbarControl::OperationStack used in an application.

If the IToolbarControl::Buddy, IMapControl2::Map or IPageLayoutControl::PageLayout changes a new ControlsOperationStack object will need passing to the IToolbarControl::OperationStack. Use the following events to do this: IToolbarControlEvents::OnBuddyChanged, IMapControlEvents2::OnMapReplaced, IPageLayoutControlEvents::OnPageLayoutReplaced and IPageLayoutControlEvents::OnFocusMapChanged.

Errors Returned

1060 800A0424: The supplied hook is not valid. 

See Also

IHookHelper Interface