---
title: "QLPreviewRequestSetDocumentObject(_:_:_:)"
framework: quicklook
role: symbol
role_heading: Function
path: "quicklook/qlpreviewrequestsetdocumentobject(_:_:_:)"
---

# QLPreviewRequestSetDocumentObject(_:_:_:)

Stores an object as part of a preview request.

## Declaration

```swift
func QLPreviewRequestSetDocumentObject(_ preview: QLPreviewRequest!, _ object: UnsafeRawPointer!, _ callbacks: UnsafePointer<CFArrayCallBacks>!)
```

## Parameters

- `preview`: The preview request object.
- `object`: The object that you want to associate with the preview request.
- `callbacks`: Callbacks for retaining or releasing the object that you want to store as part of the preview request.

## See Also

### Requesting previews

- [QLPreviewRequestCopyContentUTI(_:)](quicklook/qlpreviewrequestcopycontentuti(_:).md)
- [QLPreviewRequestCopyOptions(_:)](quicklook/qlpreviewrequestcopyoptions(_:).md)
- [QLPreviewRequestCopyURL(_:)](quicklook/qlpreviewrequestcopyurl(_:).md)
- [QLPreviewRequestCreateContext(_:_:_:_:)](quicklook/qlpreviewrequestcreatecontext(_:_:_:_:).md)
- [QLPreviewRequestCreatePDFContext(_:_:_:_:)](quicklook/qlpreviewrequestcreatepdfcontext(_:_:_:_:).md)
- [QLPreviewRequestFlushContext(_:_:)](quicklook/qlpreviewrequestflushcontext(_:_:).md)
- [QLPreviewRequestGetDocumentObject(_:)](quicklook/qlpreviewrequestgetdocumentobject(_:).md)
- [QLPreviewRequestGetGeneratorBundle(_:)](quicklook/qlpreviewrequestgetgeneratorbundle(_:).md)
- [QLPreviewRequestGetTypeID()](quicklook/qlpreviewrequestgettypeid().md)
- [QLPreviewRequestIsCancelled(_:)](quicklook/qlpreviewrequestiscancelled(_:).md)
- [QLPreviewRequestSetDataRepresentation(_:_:_:_:)](quicklook/qlpreviewrequestsetdatarepresentation(_:_:_:_:).md)
- [QLPreviewRequestSetURLRepresentation(_:_:_:_:)](quicklook/qlpreviewrequestseturlrepresentation(_:_:_:_:).md)