> ## 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.

# XblMultiplayerActivityGetActivityResultSize

> XblMultiplayerActivityGetActivityResultSize

# XblMultiplayerActivityGetActivityResultSize

取得儲存取得活動呼叫結果所需的緩衝區大小。

## 語法

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

### 參數

*async*   \_In\_\
類型：XAsyncBlock\*

此作業的 `XAsyncBlock`。

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

結果緩衝區的大小 (以位元組為單位)。

### 傳回值

類型：HRESULT

此 API 作業的 HRESULT 傳回碼。

## 備註

若要了解此函式的使用方式，請參閱[多人遊戲活動的範例程式碼](/zh-TW/services/xbox-services/multiplayer/mpa/how-to/live-mpa-client-how-to)中[活動](/zh-TW/services/xbox-services/multiplayer/mpa/how-to/live-mpa-client-how-to#activities)一節的「取得活動」。<br /><br /> 如需多人遊戲活動的詳細資訊，請參閱[活動](/zh-TW/services/xbox-services/multiplayer/mpa/concepts/live-mpa-activities)。

## 需求

**標頭：** multiplayer\_activity\_c.h

**程式庫：** Microsoft.Xbox.Services.14x.GDK.C.lib

## 另請參閱

[multiplayer\_activity\_c](/zh-TW/reference/live/xsapi-c/multiplayer_activity_c/multiplayer_activity_c_members)\
[XblMultiplayerActivityGetActivityAsync](/zh-TW/reference/live/xsapi-c/multiplayer_activity_c/functions/xblmultiplayeractivitygetactivityasync)\
[XblMultiplayerActivityGetActivityResult](/zh-TW/reference/live/xsapi-c/multiplayer_activity_c/functions/xblmultiplayeractivitygetactivityresult)


## Related topics

- [XblMultiplayerActivityGetActivityResultSize](/reference/live/xsapi-c/multiplayer_activity_c/functions/xblmultiplayeractivitygetactivityresultsize.md)
- [XblMultiplayerActivityGetActivityResult](/reference/live/xsapi-c/multiplayer_activity_c/functions/xblmultiplayeractivitygetactivityresult.md)
- [XblMultiplayerActivityGetActivityAsync](/reference/live/xsapi-c/multiplayer_activity_c/functions/xblmultiplayeractivitygetactivityasync.md)