> ## 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.

# XblMultiplayerSessionChangeEventArgs

> XblMultiplayerSessionChangeEventArgs

# XblMultiplayerSessionChangeEventArgs

发生会话变更时传递给事件处理程序的参数。

## 语法

```cpp theme={null}
typedef struct XblMultiplayerSessionChangeEventArgs {  
    XblMultiplayerSessionReference SessionReference;  
    char Branch[XBL_GUID_LENGTH];  
    uint64_t ChangeNumber;  
} XblMultiplayerSessionChangeEventArgs  
```

### 成员

*SessionReference*\
类型：[XblMultiplayerSessionReference](/reference/live/xsapi-c/multiplayer_c/structs/xblmultiplayersessionreference)

触发此事件的会话。

*Branch*\
类型：char\[XBL\_GUID\_LENGTH]

用于限定变更号范围的会话分支。

*ChangeNumber*\
类型：uint64\_t

会话的变更号。

## 要求

**头文件：** multiplayer\_c.h

## 另请参阅

[multiplayer\_c](/reference/live/xsapi-c/multiplayer_c/multiplayer_c_members)


## Related topics

- [XblMultiplayerSessionChangedHandler](/zh-CN/reference/live/xsapi-c/multiplayer_c/functions/xblmultiplayersessionchangedhandler.md)
- [多人游戏任务](/zh-CN/services/xbox-services/multiplayer/mpsd/how-to/live-mpsd-how-tos.md)
- [XblMultiplayerEventArgsPropertiesJson](/zh-CN/reference/live/xsapi-c/multiplayer_manager_c/functions/xblmultiplayereventargspropertiesjson.md)
- [XblStatisticChangeEventArgs](/zh-CN/reference/live/xsapi-c/user_statistics_c/structs/xblstatisticchangeeventargs.md)
- [XblSocialRelationshipChangeEventArgs](/zh-CN/reference/live/xsapi-c/social_c/structs/xblsocialrelationshipchangeeventargs.md)