UActorComponent::GetUCSModifiedProperties

function Engine Since 4.0

#include "Components/ActorComponent.h"

Access: public Specifiers: ENGINE_APIconst

Description

Populates the provided set with pointers to every FProperty that has been modified by the User Construction Script on this component.

Caveats & Gotchas

• The set is populated by reference, not returned — the caller is responsible for passing a valid TSet and the function will add to (not replace) any existing entries.
• The list is only meaningful if DetermineUCSModifiedProperties() has been called first. An empty set does not guarantee no UCS modifications; it may just mean the list has not been computed yet.
• FProperty pointers are owned by the class's UClass — do not attempt to delete or modify them.

Signature

ENGINE_API void GetUCSModifiedProperties(TSet<const FProperty*>& ModifiedProperties) const;

Parameters

Name	Type	Description	Default
ModifiedProperties	TSet<const FProperty*>&	Output set populated with the FProperty objects for each property that the UCS has modified on this component.	—

Return Type

void

Example

Inspect which properties a UCS has changed C++

#if WITH_EDITOR
void LogUCSModifiedProps(UActorComponent* Comp)
{
	Comp->DetermineUCSModifiedProperties();
	TSet<const FProperty*> Props;
	Comp->GetUCSModifiedProperties(Props);
	for (const FProperty* Prop : Props)
	{
		UE_LOG(LogTemp, Log, TEXT("UCS modified: %s"), *Prop->GetName());
	}
}
#endif

Version History

Introduced in: 4.0

Version	Status	Notes
5.6	stable	—

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