AActor::NotifyActorOnInputTouchEnter

function Engine Since 4.0

#include "GameFramework/Actor.h"

Access: public Specifiers: virtual

Description

Called when a touch finger moves onto this actor while touch-events are enabled, analogous to NotifyActorBeginCursorOver but for touchscreen input.

Caveats & Gotchas

• Requires bEnableTouchOverEvents on the PlayerController; this is distinct from bEnableClickEvents and bEnableMouseOverEvents — all three are independent flags.
• FingerIndex allows tracking up to 10 simultaneous touch points (Touch1–Touch10 via ETouchIndex), but most mobile UE projects only handle Touch1.

Signature

ENGINE_API virtual void NotifyActorOnInputTouchEnter(const ETouchIndex::Type FingerIndex);

Parameters

Name	Type	Description	Default
FingerIndex	ETouchIndex::Type	Which finger (touch index) moved over the actor.	—

Return Type

void

Example

Highlight on touch hover C++

void AMyActor::NotifyActorOnInputTouchEnter(const ETouchIndex::Type FingerIndex)
{
    Super::NotifyActorOnInputTouchEnter(FingerIndex);
    SetActorScale3D(FVector(1.1f)); // Scale up slightly as hover feedback
}

Version History

Introduced in: 4.0

Version	Status	Notes
5.6	stable	—

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