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API > API/Plugins > API/Plugins/MeshModelingTools > API/Plugins/MeshModelingTools/ToolActivities > API/Plugins/MeshModelingTools/ToolActivities/UPolyEditActivityContext
Type
typedef TMulticastDelegate_OneParam< void, bool bGroupTopologyChanged > FOnUndoRedo
References
| Module | MeshModelingTools |
| Header | /Engine/Plugins/Runtime/MeshModelingToolset/Source/MeshModelingTools/Public/ToolActivities/PolyEditActivityContext.h |
| Include | #include "ToolActivities/PolyEditActivityContext.h" |
Remarks
Gets broadcast when the CurrentMesh is modified by an undo/redo transaction emitted via EmitCurrentMeshChangeAndUpdate. Only activities that issue multiple transactions via EmitCurrentMeshChangeAndUpdate during the same invocation need to use this, since a transaction that ends immediately after the call will not have to deal with the undo.