UKismetSystemLibrary::CreateCopyForUndoBuffer
#include "Kismet/KismetSystemLibrary.h"
Access: public
Specifiers: staticUFUNCTIONBlueprintCallable
Description
Marks an object as modified for the editor's undo/redo transaction buffer before construction-script or utility-widget code changes it.
Caveats & Gotchas
- • Only meaningful inside the editor — it's a thin wrapper around Modify()/transaction recording and has no effect in a packaged game.
- • Must be called before you actually change the object's state; calling it after the fact won't retroactively capture the pre-change values.
- • Intended for editor utility Blueprints and construction scripts, not runtime gameplay logic.
Signature
static void CreateCopyForUndoBuffer(UObject* ObjectToModify)Parameters
| Name | Type | Description | Default |
|---|---|---|---|
| ObjectToModify | UObject* | The object about to be modified that should be captured for undo/redo. | — |
Return Type
void Example
Record undo state before an editor utility edits an object C++
UKismetSystemLibrary::CreateCopyForUndoBuffer(TargetActor);
TargetActor->SetActorLabel(TEXT("Renamed"));Tags
Version History
Introduced in: 4.0
| Version | Status | Notes |
|---|---|---|
| 5.6 | stable | — |
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