QLThumbnailRequestCopyContentUTI(_:)
Returns the UTI for the thumbnail request.
Declaration
func QLThumbnailRequestCopyContentUTI(_ thumbnail: QLThumbnailRequest!) -> Unmanaged<CFString>!Parameters
- thumbnail:
The thumbnail request object.
Return Value
The UTI identifying the content type of the document for which the thumbnail is requested; returns NULL if the UTI cannot be located. You should explicitly release this string object when it is no longer needed.
Discussion
Thread-safety: This function should be called in the same thread as the thumbnail request is made in; generally, this is the same thread in which the GenerateThumbnailForURL callback was invoked.
See Also
Handling thumbnail requests
QLThumbnailRequestCopyOptions(_:)QLThumbnailRequestCopyURL(_:)QLThumbnailRequestCreateContext(_:_:_:_:)QLThumbnailRequestFlushContext(_:_:)QLThumbnailRequestGetDocumentObject(_:)QLThumbnailRequestGetGeneratorBundle(_:)QLThumbnailRequestGetMaximumSize(_:)QLThumbnailRequestGetTypeID()QLThumbnailRequestIsCancelled(_:)QLThumbnailRequestSetDocumentObject(_:_:_:)QLThumbnailRequestSetImage(_:_:_:)QLThumbnailRequestSetImageAtURL(_:_:_:)QLThumbnailRequestSetImageWithData(_:_:_:)QLThumbnailRequestSetThumbnailWithDataRepresentation(_:_:_:_:_:)QLThumbnailRequestSetThumbnailWithURLRepresentation(_:_:_:_:_:)