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> Unreal Engine API Reference > Runtime > InteractiveToolsFramework > EToolChangeTrackingMode

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EToolChangeTrackingMode

[UInteractiveToolManager](API\Runtime\InteractiveToolsFramework\UInteractiveToolManager) can emit change events for the active tool in various ways.

Windows

MacOS

Linux

References

Module	InteractiveToolsFramework
Header	/Engine/Source/Runtime/Experimental/InteractiveToolsFramework/Public/InteractiveToolManager.h
Include	#include "InteractiveToolManager.h"

Syntax

enum EToolChangeTrackingMode
{
    NoChangeTracking    = 1,
    UndoToExit          = 2,
    FullUndoRedo        = 3,
}

Values

Name	Description
NoChangeTracking	Do not emit any Active Tool change events
UndoToExit	When Activating a new Tool, emit a change that will cancel/deactivate that Tool on Undo, but not reactivate it on Redo
FullUndoRedo	Full change tracking of active Tool.

Remarks

UInteractiveToolManager can emit change events for the active tool in various ways. This allows different modes to control how tools activate/deactivate on undo/redo, which is necessary because some modes (eg Modeling Mode) do not support redo "into" a Tool, while others require it (like Paint Mode)

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