> ## 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.

# XPackageInstallChunksResult

> XPackageInstallChunksResult

# XPackageInstallChunksResult

Retrieves the result of a call to [XPackageInstallChunksAsync](/reference/system/xpackage/functions/xpackageinstallchunksasync).

## Syntax

```cpp theme={null}
HRESULT XPackageInstallChunksResult(  
         XAsyncBlock* asyncBlock,  
         XPackageInstallationMonitorHandle* installationMonitor  
)  
```

### Parameters

*asyncBlock*   \_Inout\_\
Type: [XAsyncBlock\*](/reference/system/xasync/structs/xasyncblock)

The **XAsyncBlock** passed to [XPackageInstallChunksAsync](/reference/system/xpackage/functions/xpackageinstallchunksasync).

*installationMonitor*   \_Out\_\
Type: XPackageInstallationMonitorHandle\*

On return, contains an installation monitor for the installation.

### Return value

Type: HRESULT

HRESULT success or error code.

## Remarks

[XPackageInstallChunks](/reference/system/xpackage/functions/xpackageinstallchunks) has an async variant. Installation of chunks might involve prompting the user to accept the download size.

This example shows how BigMaps are installed by using the asynchronous APIs:

```cpp theme={null}
void CALLBACK BigMapsInstallProgress(
    void* /* context */,
    XPackageInstallationMonitorHandle monitor)
{
    XPackageInstallationProgress progress;
    XPackageGetInstallationProgress(monitor, &progress);
    if (progress.completed)
    {
        printf("BigMaps Installed\n");
        XPackageCloseInstallationMonitorHandle(monitor);
    }
}

void CALLBACK BigMapsAsyncInstallComplete(XAsyncBlock* asyncBlock)
{
    XPackageInstallationMonitorHandle monitor;
    HRESULT hr = XPackageInstallChunksResult(asyncBlock, &monitor);
    delete asyncBlock;

    if (SUCCEEDED(hr))
    {
        XTaskQueueRegistrationToken token;
        if (FAILED(XPackageRegisterInstallationProgressChanged(
            monitor,
            nullptr,
            BigMapsInstallProgress, &token)))
        {
            XPackageCloseInstallationMonitorHandle(monitor);
        }
    }
}

HRESULT InstallBigMapsAsync(XTaskQueueHandle queue)
{
    char id[XPACKAGE_IDENTIFIER_MAX_LENGTH];
    HRESULT hr = XPackageGetCurrentProcessPackageIdentifier(_countof(id), id);
    if (FAILED(hr)) return hr;

    XPackageChunkSelector selector;
    selector.type = XPackageChunkSelectorType::Tag;
    selector.tag = "BigMaps";

    XAsyncBlock* asyncBlock = new (std::nothrow) XAsyncBlock{};
    asyncBlock->callback = BigMapsAsyncInstallComplete;
    asyncBlock->queue = queue;

    hr = XPackageInstallChunksAsync(
        id, 1, &selector, 1000,
        false, asyncBlock);

    if (FAILED(hr))
    {
        delete asyncBlock;
    }

    return hr;
}
```

## Requirements

**Header:** XPackage.h

**Library:** xgameruntime.lib

**Supported platforms:** Windows, XBOX One family consoles and XBOX Series consoles

## Conceptual documentation

* [Asynchronous programming design goals and improvements](/build/core-features/common/async/async-whitepaper)

## See also

[XPackage](/reference/system/xpackage/xpackage_members)\
[Streaming Installation and Intelligent Delivery](/build/core-features/common/packaging/overviews/streaming_install-intelligent_delivery)\
[XPackageInstallChunks](/reference/system/xpackage/functions/xpackageinstallchunks)


## Related topics

- [XPackage](/reference/system/xpackage/xpackage_members.md)
- [XPackageInstallChunks](/reference/system/xpackage/functions/xpackageinstallchunks.md)
- [XPackageInstallChunksAsync](/reference/system/xpackage/functions/xpackageinstallchunksasync.md)
- [XPackageChangeChunkInstallOrder](/reference/system/xpackage/functions/xpackagechangechunkinstallorder.md)
- [XStoreDownloadAndInstallPackagesResult](/reference/system/xstore/functions/xstoredownloadandinstallpackagesresult.md)