商店基本操作

bool CALLBACK ProductEnumerationCallback(const XStoreProduct* product, void* context)
{
    // Handle adding the product to the game

    printf("%s %s %u\n", product->title, product->storeId, product->productKind);

    return true;
}

void QueryCatalog()
{
    auto async = new XAsyncBlock{};
    async->queue = m_asyncQueue;
    async->callback = [](XAsyncBlock* async)
    {
        XStoreProductQueryHandle queryHandle = nullptr;

        HRESULT hr = XStoreQueryAssociatedProductsResult(async, &queryHandle);
        if (SUCCEEDED(hr))
        {
            hr = XStoreEnumerateProductsQuery(queryHandle, async->context, ProductEnumerationCallback);

            if (SUCCEEDED(hr))
            {
                // TODO: Check for more pages to process
                printf("Enumeration complete\n");
            }

            XStoreCloseProductsQueryHandle(queryHandle);
            delete async;
        }
    };

    XStoreProductKind typeFilter =
        XStoreProductKind::Consumable |
        XStoreProductKind::Durable |
        XStoreProductKind::Game;

    HRESULT hr = XStoreQueryAssociatedProductsAsync(
        m_xStoreContext,
        typeFilter,
        UINT8_MAX,  // placeholder maximum, see Paging
        async)

    if (FAILED(hr))
    {
        delete async;
    }
}

void MakePurchase(const char* storeId)
{
    auto async = new XAsyncBlock{};
    async->context = &storeId;
    async->queue = m_asyncQueue;
    async->callback = [](XAsyncBlock *async)
    {
        const char* = reinterpret_cast<const char*>(async->context);

        HRESULT hr = XStoreShowPurchaseUIResult(async);
        if (SUCCEEDED(hr))
        {
            printf("Purchase succeeded (%s)\n", storeId);

            // Refresh ownership and update game
        }
        else
        {
            printf("Purchase failed (%s) 0x%x\n", storeId, hr);

            if (hr == E_GAMESTORE_ALREADY_PURCHASED)
            {
                printf("Already own this\n");
            }
        }

        delete async;
    };

    HRESULT hr = XStoreShowPurchaseUIAsync(
        m_xStoreContext,
        storeId,
        nullptr,    // Can be used to override the title bar text
        nullptr,    // Can be used to provide extra details to purchase
        async);

    if (FAILED(hr))
    {
        delete async;
        printf("Error calling XStoreShowPurchaseUIAsync : 0x%x\n", hr);
        return;
    }
}