Onoverlapbegin ue4 c++

public
  ...

  // declare overlap begin function
	UFUNCTION()
	void OnOverlapBegin(class UPrimitiveComponent* OverlappedComp, class AActor* OtherActor, class UPrimitiveComponent* OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult& SweepResult);

	// declare overlap end function
	UFUNCTION()
	void OnOverlapEnd(class UPrimitiveComponent* OverlappedComp, class AActor* OtherActor, class UPrimitiveComponent* OtherComp, int32 OtherBodyIndex);

Source: unrealcpp.com

Onoverlapbegin

void ALightSwitchCodeOnly::OnOverlapBegin(UPrimitiveComponent* OverlappedComp, AActor* OtherActor, UPrimitiveComponent* OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult& SweepResult)  
{  
    // Other Actor is the actor that triggered the event. Check that is not ourself.  
    if ( (OtherActor != nullptr ) && (OtherActor != this) && ( OtherComp != nullptr ) )  
    {  
        // Turn off the light  
        PointLight->SetVisibility(false);  
    }  
}

Source: docs.unrealengine.com

Onoverlapbegin ue4 c++

AUnrealCPPCharacter::AUnrealCPPCharacter()
{
  ...

  // declare overlap events
	TriggerCapsule->OnComponentBeginOverlap.AddDynamic(this, &AUnrealCPPCharacter::OnOverlapBegin); 
	TriggerCapsule->OnComponentEndOverlap.AddDynamic(this, &AUnrealCPPCharacter::OnOverlapEnd); 

}

Source: unrealcpp.com

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