XStoreQueryGameAndDlcPackageUpdatesAsync

检索游戏包的可用更新列表，以及随后可用于下载和安装这些更新的任何关联的 DLC 或中心感知包。

语法

HRESULT XStoreQueryGameAndDlcPackageUpdatesAsync(  
         const XStoreContextHandle storeContextHandle,  
         XAsyncBlock* async  
)  

参数

storeContextHandle _In_
类型：XStoreContextHandle

XStoreCreateContext 返回的用户的应用商店上下文句柄。

async _Inout_
类型：XAsyncBlock*

用于定义正在进行的异步工作的 XAsyncBlock。 XAsyncBlock 可用于轮询调用的状态和检索调用结果。 有关详细信息，请参阅 XAsyncBlock。

返回值

类型：HRESULT

HRESULT 成功或错误代码。

备注

要检索可用更新的列表以及此函数的执行结果，请在调用此函数后调用 XStoreQueryGameAndDlcPackageUpdatesResult。 要获取要检索的更新的数量，请在调用此函数后调用 XStoreQueryGameAndDlcPackageUpdatesResultCount。 结果计数函数很重要，因为它让您可以确定要传递给结果函数的数组的适当大小。

调用上下文	结果
特许经营游戏中心	特许经营游戏中心本身、依赖于它的任何中心感知游戏以及与任何中心感知游戏或特许经营游戏中心本身关联的任何 DLC、加载项。
其他游戏	游戏本身以及与之关联的 DLL、加载项。

以下代码段显示一个检索当前包的游戏和可选更新的示例。

struct UpdateContext
{
    XStoreContextHandle storeContextHandle;
    XTaskQueueHandle taskQueueHandle;
    bool downloadOnly;
};

void CALLBACK DownloadAndInstallPackageUpdatesCallback(XAsyncBlock* asyncBlock)
{
    HRESULT hr = XStoreDownloadAndInstallPackageUpdatesResult(asyncBlock);

    if (FAILED(hr))
    {
        printf("Failed download and install package updates: 0x%x\r\n", hr);
        return;
    }
}

void CALLBACK DownloadPackageUpdatesCallback(XAsyncBlock* asyncBlock)
{
    HRESULT hr = XStoreDownloadPackageUpdatesResult(asyncBlock);

    if (FAILED(hr))
    {
        printf("Failed download package updates: 0x%x\r\n", hr);
        return;
    }
}

void CALLBACK QueryGameAndDlcPackageUpdatesCallback(XAsyncBlock* asyncBlock)
{
    UpdateContext* updateContext = reinterpret_cast<UpdateContext*>(asyncBlock->context);
    uint32_t count;

    HRESULT hr = XStoreQueryGameAndDlcPackageUpdatesResultCount(
        asyncBlock,
        &count);

    if (FAILED(hr))
    {
        printf("Failed retrieve the game and dlc update count: 0x%x\r\n", hr);
        delete updateContext;
        return;
    }

    printf("Number of updates: %d", count);

    if (count > 0)
    {
        XStorePackageUpdate* updates = new XStorePackageUpdate[count];
        hr = XStoreQueryGameAndDlcPackageUpdatesResult(
            asyncBlock,
            count,
            &updates);

        if (FAILED(hr))
        {
            delete[] updates;
            delete updateContext;
            printf("Failed retrieve the game and dlc updates: 0x%x\r\n", hr);
            return;
        }

        auto packageIdentifiers = new char[count][XPACKAGE_IDENTIFIER_MAX_LENGTH];
        for (uint32_t index = 0; index < count; index++)
        {
            printf("packageIdentifier: %s\r\n", updates[index].packageIdentifier);
            printf("isMandatory      : %s\r\n", updates[index].isMandatory ? "true" : "false");

            memcpy(&packageIdentifiers[index], updates[index].packageIdentifier, XPACKAGE_IDENTIFIER_MAX_LENGTH);
        }

        delete[] updates;

        auto downloadAsyncBlock = std::make_unique<XAsyncBlock>();
        ZeroMemory(downloadAsyncBlock.get(), sizeof(*downloadAsyncBlock));
        downloadAsyncBlock->queue = updateContext->taskQueueHandle;
        downloadAsyncBlock->context = updateContext;

        if (updateContext->downloadOnly)
        {
            // NOTE: This can be used instead to only perform the download.
            // This is helpful if you wish to download in the background
            // while the player continues to play. Once the download is completed,
            // you could then warn the user and call XStoreDownloadAndInstallPackageUpdatesAsync
            // to trigger the game to update which may close the game.

            downloadAsyncBlock->callback = DownloadPackageUpdatesCallback;
            hr = XStoreDownloadPackageUpdatesAsync(
                updateContext->storeContextHandle,
                (const char**)(&packageIdentifiers[0]),
                count,
                downloadAsyncBlock.get());

            if (FAILED(hr))
            {
                delete updateContext;
                delete[] packageIdentifiers;
                printf("Failed start download: 0x%x\r\n", hr);
                return;
            }
        }
        else
        {
            downloadAsyncBlock->callback = DownloadAndInstallPackageUpdatesCallback;
            hr = XStoreDownloadAndInstallPackageUpdatesAsync(
                updateContext->storeContextHandle,
                (const char**)(&packageIdentifiers[0]),
                count,
                downloadAsyncBlock.get());

            if (FAILED(hr))
            {
                delete updateContext;
                delete[] packageIdentifiers;
                printf("Failed start download and install: 0x%x\r\n", hr);
                return;
            }
        }

        delete[] packageIdentifiers;
    }
    else
    {
        delete updateContext;
    }
}

void QueryGameAndDlcPackageUpdates(XStoreContextHandle storeContextHandle, XTaskQueueHandle taskQueueHandle, bool downloadOnly)
{
    UpdateContext* updateContext = new UpdateContext;
    updateContext->storeContextHandle = storeContextHandle;
    updateContext->taskQueueHandle = taskQueueHandle;
    updateContext->downloadOnly = downloadOnly;

    auto asyncBlock = std::make_unique<XAsyncBlock>();
    ZeroMemory(asyncBlock.get(), sizeof(*asyncBlock));
    asyncBlock->queue = taskQueueHandle;
    asyncBlock->context = updateContext;
    asyncBlock->callback = QueryGameAndDlcPackageUpdatesCallback;

    HRESULT hr = XStoreQueryGameAndDlcPackageUpdatesAsync(
        storeContextHandle,
        asyncBlock.get());

    if (FAILED(hr))
    {
        printf("Failed to query game and DLC updates: 0x%x\r\n", hr);
        delete updateContext;
        return;
    }
    
    if(FAILED(XAsyncGetStatus(asyncBlock, true))) 
    { 
        printf("XStoreQueryGameAndDlcPackageUpdatesAsync failed\r\n"); 
        return; 
    } 
}

要求

头文件：XStore.h（包含在 XGameRuntime.h 中）

库：xgameruntime.lib

支持平台：Windows、Xbox One 系列主机和 Xbox Series 主机

另请参阅

XStore
XStoreQueryGameAndDlcPackageUpdatesResult
XStoreQueryGameAndDlcPackageUpdatesResultCount
特许经营游戏中心