Put it all together - Wallet Essentials - (Unreal Engine module)

Last updated on July 28, 2025

Connect the UI to display player's wallet info

1. Open the WalletBalanceWidget_Starter CPP file, navigate to the NativeOnActivated() function, and replace the existing implementation with the code below. This updated code binds the ShowBalance() function to the WalletEssentialsSubsystem_Starter's response delegate, which you implemented on the previous page. With this setup, the wallet info will be refreshed each time the WalletBalanceWidget_Starter widget is reactivated.

   void UWalletBalanceWidget_Starter::NativeOnActivated()
   {
   	Super::NativeOnActivated();
   
   	WalletSubsystem = GetGameInstance()->GetSubsystem<UWalletEssentialsSubsystem_Starter>();
   	ensure(WalletSubsystem);
   
   	WalletSubsystem->OnQueryOrGetWalletInfoCompleteDelegates.AddUObject(this, &ThisClass::ShowBalance);
   
   	// Update balance.
   	W_Root->ClearChildren();
   	CurrencyBalanceEntryMap.Empty();
   
   	UpdateBalance(ECurrencyType::COIN);
   	UpdateBalance(ECurrencyType::GEM);
   }

2. Navigate to the NativeOnDeactivated() function and replace the existing implementation with the code below. This code clears the binding to the WalletEssentialsSubsystem_Starter's response delegate, ensuring no updates are triggered when the widget is deactivated.

   void UWalletBalanceWidget_Starter::NativeOnDeactivated()
   {
   	Super::NativeOnDeactivated();
   
   	WalletSubsystem->OnQueryOrGetWalletInfoCompleteDelegates.RemoveAll(this);
   }

3. Navigate to the UpdateBalance() function and replace the existing implementation with the code below. This code calls the QueryOrGetWalletInfoByCurrencyCode() function from the WalletEssentialsSubsystem_Starter, which you implemented on the previous page.

   void UWalletBalanceWidget_Starter::UpdateBalance(const ECurrencyType CurrencyType)
   {
   	const FString CurrencyCode = FPreConfigCurrency::GetCodeFromType(CurrencyType);
   
   	UWalletBalanceWidgetEntry* Entry = CreateWidget<UWalletBalanceWidgetEntry>(this, CurrencyBalanceClass);
   	ensure(Entry);
   
   	Entry->Setup(FText::FromString("..."), CurrencyType);
   	W_Root->AddChild(Entry);
   	CurrencyBalanceEntryMap.Add(CurrencyCode, Entry);
   
   	// Always retrieve from backend to make sure data is updated.
   	WalletSubsystem->QueryOrGetWalletInfoByCurrencyCode(GetOwningPlayer(), CurrencyCode, true);
   }

Resources

• The files used in this tutorial section are available in the Byte Wars GitHub repository.
  • AccelByteWars/Source/AccelByteWars/TutorialModules/Monetization/WalletEssentials/UI/WalletBalanceWidget_Starter.cpp