> ## Documentation Index
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# XblMultiplayerActivityGetActivityResultSize

> XblMultiplayerActivityGetActivityResultSize

# XblMultiplayerActivityGetActivityResultSize

获取存储获取活动调用结果所需的缓冲区大小。

## 语法

```cpp theme={null}
HRESULT XblMultiplayerActivityGetActivityResultSize(  
         XAsyncBlock* async,  
         size_t* resultSizeInBytes  
)  
```

### 参数

*async*   \_In\_\
类型：XAsyncBlock\*

此操作的 `XAsyncBlock`。

*resultSizeInBytes*   \_Out\_\
类型：size\_t\*

结果缓冲区所需的大小（字节）。

### 返回值

类型：HRESULT

此 API 操作的 HRESULT 返回代码。

## 备注

若要了解如何使用此函数，请参阅[Multiplayer Activity 的示例代码](https://docs.xbox.com/zh-CN/services/xbox-services/multiplayer/mpa/how-to/live-mpa-client-how-to.md)的[活动](https://docs.xbox.com/zh-CN/services/xbox-services/multiplayer/mpa/how-to/live-mpa-client-how-to.md#activities)部分中的“获取活动”。\
\
 有关多人游戏活动的详细信息，请参阅[活动](https://docs.xbox.com/zh-CN/services/xbox-services/multiplayer/mpa/concepts/live-mpa-activities.md)。

## 要求

**头文件：** multiplayer\_activity\_c.h

**库：** Microsoft.Xbox.Services.14x.GDK.C.lib

## 另请参阅

[multiplayer\_activity\_c](https://docs.xbox.com/zh-CN/reference/live/xsapi-c/multiplayer_activity_c/multiplayer_activity_c_members.md)\
[XblMultiplayerActivityGetActivityAsync](https://docs.xbox.com/zh-CN/reference/live/xsapi-c/multiplayer_activity_c/functions/xblmultiplayeractivitygetactivityasync.md)\
[XblMultiplayerActivityGetActivityResult](https://docs.xbox.com/zh-CN/reference/live/xsapi-c/multiplayer_activity_c/functions/xblmultiplayeractivitygetactivityresult.md)


## Related topics

- [XblMultiplayerActivityGetActivityResult](https://docs.xbox.com/zh-CN/reference/live/xsapi-c/multiplayer_activity_c/functions/xblmultiplayeractivitygetactivityresult.md)
- [XblMultiplayerActivityGetActivityAsync](https://docs.xbox.com/zh-CN/reference/live/xsapi-c/multiplayer_activity_c/functions/xblmultiplayeractivitygetactivityasync.md)
- [Multiplayer Activity 示例代码](https://docs.xbox.com/zh-CN/services/xbox-services/multiplayer/mpa/how-to/live-mpa-client-how-to.md)
- [multiplayer_activity_c](https://docs.xbox.com/zh-CN/reference/live/xsapi-c/multiplayer_activity_c/multiplayer_activity_c_members.md)
- [从 MPSD 迁移到 PlayFab Multiplayer 和 MPA](https://docs.xbox.com/zh-CN/services/xbox-services/multiplayer/mpsd/concepts/live-mpsd-to-mlp.md)