UKismetSystemLibrary::DoesImplementInterface

function Engine Blueprint Since 4.0

#include "Kismet/KismetSystemLibrary.h"

Access: public Specifiers: staticUFUNCTIONBlueprintPure

Description

Checks whether an object implements a given interface, whether it's a native C++ interface or a Blueprint interface. Shows as the "Does Object Implement Interface" node.

Caveats & Gotchas

• Passing a null TestObject returns false rather than asserting, so it's safe to call on unvalidated references.
• For Blueprint interfaces, this checks the object's implemented interfaces list, not whether individual interface functions are overridden — a class can implement an interface without providing meaningful overrides for every function.

Signature

static bool DoesImplementInterface(const UObject* TestObject, TSubclassOf<UInterface> Interface)

Parameters

Name	Type	Description	Default
TestObject	const UObject*	The object instance to test.	—
Interface	TSubclassOf<UInterface>	The interface class to check for.	—

Return Type

bool

Example

Check before calling an interface function C++

if (UKismetSystemLibrary::DoesImplementInterface(TargetActor, UInteractable::StaticClass()))
{
    IInteractable::Execute_Interact(TargetActor, InstigatorPawn);
}

Version History

Introduced in: 4.0

Version	Status	Notes
5.6	stable	—

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