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# XStoreDownloadAndInstallPackagesResultCount

> XStoreDownloadAndInstallPackagesResultCount

# XStoreDownloadAndInstallPackagesResultCount

获取将由 [XStoreDownloadAndInstallPackagesResult](https://docs.xbox.com/zh-CN/reference/system/xstore/functions/xstoredownloadandinstallpackagesresult.md) 返回的结果中的项数。

## 语法

```cpp theme={null}
HRESULT XStoreDownloadAndInstallPackagesResultCount(  
         XAsyncBlock* async,  
         uint32_t* count  
)  
```

### 参数

*async*   \_In\_\
类型：[XAsyncBlock\*](https://docs.xbox.com/zh-CN/reference/system/xasync/structs/xasyncblock.md)

传递给 [XStoreDownloadAndInstallPackagesAsync](https://docs.xbox.com/zh-CN/reference/system/xstore/functions/xstoredownloadandinstallpackagesasync.md) 的 XAsyncBlock。可使用 [XAsyncBlock](https://docs.xbox.com/zh-CN/reference/system/xasync/structs/xasyncblock.md) 轮询调用状态并检索调用结果。有关详细信息，请参阅 [XAsyncBlock](https://docs.xbox.com/zh-CN/reference/system/xasync/structs/xasyncblock.md)。

*count*   \_Out\_\
类型：uint32\_t\*

成功时，包含将由 [XStoreDownloadAndInstallPackagesResult](https://docs.xbox.com/zh-CN/reference/system/xstore/functions/xstoredownloadandinstallpackagesresult.md) 返回的结果中的项数。

### 返回值

类型：HRESULT

成功时返回 S\_OK；否则返回错误代码。

## 备注

此结果函数使你能够检索调用 [XStoreDownloadAndInstallPackagesAsync](https://docs.xbox.com/zh-CN/reference/system/xstore/functions/xstoredownloadandinstallpackagesasync.md) 时已下载的安装包数量。因此，此函数应在调用 [XStoreDownloadAndInstallPackagesAsync](https://docs.xbox.com/zh-CN/reference/system/xstore/functions/xstoredownloadandinstallpackagesasync.md) 之后调用，通常在回调函数的上下文中。有关用法示例，请参阅 [XStoreDownloadAndInstallPackagesAsync](https://docs.xbox.com/zh-CN/reference/system/xstore/functions/xstoredownloadandinstallpackagesasync.md)。

## 要求

**头文件：** XStore.h（包含于 XGameRuntime.h 中）

**库：** xgameruntime.lib

**支持的平台：** Windows、XBOX One 系列主机和 XBOX Series 主机

## 另请参阅

[XStore](https://docs.xbox.com/zh-CN/reference/system/xstore/xstore_members.md)\
[XStoreDownloadAndInstallPackagesAsync](https://docs.xbox.com/zh-CN/reference/system/xstore/functions/xstoredownloadandinstallpackagesasync.md)\
[XStoreDownloadAndInstallPackagesResult](https://docs.xbox.com/zh-CN/reference/system/xstore/functions/xstoredownloadandinstallpackagesresult.md)


## Related topics

- [XStoreDownloadAndInstallPackagesResult](https://docs.xbox.com/zh-CN/reference/system/xstore/functions/xstoredownloadandinstallpackagesresult.md)
- [XStoreDownloadAndInstallPackagesAsync](https://docs.xbox.com/zh-CN/reference/system/xstore/functions/xstoredownloadandinstallpackagesasync.md)
- [XStoreQueryPackageIdentifier](https://docs.xbox.com/zh-CN/reference/system/xstore/functions/xstorequerypackageidentifier.md)
- [XStoreShowProductPageUIResult](https://docs.xbox.com/zh-CN/reference/system/xstore/functions/xstoreshowproductpageuiresult.md)
- [XStore（API 内容）](https://docs.xbox.com/zh-CN/reference/system/xstore/xstore_members.md)