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

# XPackageGetMountPathSize

> XPackageGetMountPathSize

# XPackageGetMountPathSize

取得用來保存 [XPackageGetMountPath](https://docs.xbox.com/zh-TW/reference/system/xpackage/functions/xpackagegetmountpath.md) 所傳回之掛接路徑的陣列所需大小。

## 語法

```cpp theme={null}
HRESULT XPackageGetMountPathSize(  
         XPackageMountHandle mount,  
         size_t* pathSize  
)  
```

### 參數

*mount*   \_In\_\
類型：XPackageMountHandle

已掛接安裝的控制代碼。

*pathSize*   \_Out\_\
類型：size\_t\*

傳回時，包含陣列所需的大小。

### 傳回值

類型：HRESULT

HRESULT 成功或錯誤碼。

## 備註

> [!NOTE]
>
> 在時間敏感的執行緒上呼叫此函式並不安全。如需詳細資訊，請參閱[時間敏感的執行緒](https://learn.microsoft.com/gaming/gdk/docs/gdk-dev/console-dev/overviews/threads/time-sensitive-threads)。

**XPackageGetMountPathSize** 和 [XPackageGetMountPath](https://docs.xbox.com/zh-TW/reference/system/xpackage/functions/xpackagegetmountpath.md) 一起用於傳回套件內容的檔案路徑。

[XPackageGetMountPath](https://docs.xbox.com/zh-TW/reference/system/xpackage/functions/xpackagegetmountpath.md) 會掛接指定的套件識別碼，並傳回其掛接控制代碼。這可能需要幾秒鐘。如需套件識別碼的詳細資訊，請參閱[管理可下載內容 (DLC) 及授權](https://docs.xbox.com/zh-TW/publishing/xstore-commerce/xstore-dlc.md)。

只能掛接內容套件。嘗試掛接其他遊戲會產生 E\_ACCESS\_DENIED。

下列程式碼範例示範套件通常的掛接方式：

```cpp theme={null}
HRESULT MountDlc(char* dlcIdentifier)
{
    XPackageMountHandle mountHandle;
    HRESULT hr = XPackageMount(dlcIdentifier, &mountHandle);
    if (FAILED(hr)) return hr;

    size_t pathSize;
    hr = XPackageGetMountPathSize(mountHandle, &pathSize);
    if (FAILED(hr))
    {
        XPackageCloseMountHandle(mountHandle);
        return hr;
    }

    char* path = new (std::nothrow) char[pathSize];
    if (path == nullptr)
    {
        XPackageCloseMountHandle(mountHandle);
        return E_OUTOFMEMORY;
    }

    hr = XPackageGetMountPath(mountHandle, pathSize, path);
    if (FAILED(hr))
    {
        XPackageCloseMountHandle(mountHandle);
        delete[] path;
        return hr;
    }

    printf("Dlc %s mounted at path %s\n", dlcIdentifier, path);

    delete[] path;

    // Unmounts DLC path if this is the last handle
    // to it.
    XPackageCloseMountHandle(mountHandle);
    return S_OK;
}
```

## 需求

**標頭：** XPackage.h

**程式庫：** xgameruntime.lib

**支援的平台：** Windows、XBOX One 系列主機與 XBOX Series 主機

## 概念文件

* [時間敏感的執行緒](https://learn.microsoft.com/gaming/gdk/docs/gdk-dev/console-dev/overviews/threads/time-sensitive-threads)

## 另請參閱

[XPackage](https://docs.xbox.com/zh-TW/reference/system/xpackage/xpackage_members.md)\
[如何為 PC 和 XBOX One 建立及使用可下載內容套件 (DLC)](https://docs.xbox.com/zh-TW/build/core-features/common/packaging/packaging-downloadable-content-dlc.md)\
[XPackageGetMountPath](https://docs.xbox.com/zh-TW/reference/system/xpackage/functions/xpackagegetmountpath.md)


## Related topics

- [XPackageGetMountPath](https://docs.xbox.com/zh-TW/reference/system/xpackage/functions/xpackagegetmountpath.md)
- [XPackageCloseMountHandle](https://docs.xbox.com/zh-TW/reference/system/xpackage/functions/xpackageclosemounthandle.md)
- [XPackageMountWithUiAsync](https://docs.xbox.com/zh-TW/reference/system/xpackage/functions/xpackagemountwithuiasync.md)
- [XPackage (API 內容)](https://docs.xbox.com/zh-TW/reference/system/xpackage/xpackage_members.md)
- [在 Unity 專案中使用 GDK API 的 C# 包裝函式](https://docs.xbox.com/zh-TW/build/gdk-and-engines/unity/unity-api-wrappers.md)