> ## Documentation Index
> Fetch the complete documentation index at: https://devdocs.xbox.com/llms.txt
> Use this file to discover all available pages before exploring further.

# XPackageChunkAvailabilityCallback

> XPackageChunkAvailabilityCallback

# XPackageChunkAvailabilityCallback

由 [XPackageEnumerateChunkAvailability](/reference/system/xpackage/functions/xpackageenumeratechunkavailability) 使用的用户定义的回调。

## 语法

```cpp theme={null}
bool XPackageChunkAvailabilityCallback(  
         void* context,  
         const XPackageChunkSelector* selector,  
         XPackageChunkAvailability availability  
)  
```

### 参数

*context*   \_In\_\
类型：void\*

传递给 [XPackageEnumerateChunkAvailability](/reference/system/xpackage/functions/xpackageenumeratechunkavailability) 的上下文。

*selector*   \_In\_\
类型：[XPackageChunkSelector\*](/reference/system/xpackage/structs/xpackagechunkselector)

传递给 [XPackageEnumeratePackages](/reference/system/xpackage/functions/xpackageenumeratepackages) 的选择器列表。

*availability*   \_In\_\
类型：[XPackageChunkAvailability](/reference/system/xpackage/enums/xpackagechunkavailability)

匹配区块的可用性。

### 返回值

类型：bool

若要继续枚举，返回 true。若要停止枚举，返回 false。

## 备注

**XPackageChunkAvailabilityCallback** 是传递给 [XPackageEnumerateChunkAvailability](/reference/system/xpackage/functions/xpackageenumeratechunkavailability) 的函数回调。它会对枚举的每个元素调用。若要继续枚举，此回调返回 true；若要停止枚举，返回 false。

## 要求

**头文件：** XPackage.h

**库：** xgameruntime.lib

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

## 另请参阅

[XPackage](/reference/system/xpackage/xpackage_members)\
[流式安装和智能交付](/build/core-features/common/packaging/overviews/streaming_install-intelligent_delivery)
[XPackageEnumerateChunkAvailability](/reference/system/xpackage/functions/xpackageenumeratechunkavailability)


## Related topics

- [XPackageEnumerateChunkAvailability](/zh-CN/reference/system/xpackage/functions/xpackageenumeratechunkavailability.md)
- [XPackage](/zh-CN/reference/system/xpackage/xpackage_members.md)
- [XPackageChunkAvailability](/zh-CN/reference/system/xpackage/enums/xpackagechunkavailability.md)
- [XPackageFindChunkAvailability](/zh-CN/reference/system/xpackage/functions/xpackagefindchunkavailability.md)
- [Intelligent Delivery：自定义标签修饰符](/zh-CN/build/core-features/common/packaging/intelligentdelivery-custom.md)