QLThumbnailRequestIsCancelled(_:)
Returns whether the thumbnail request has been cancelled by the client.
Declaration
func QLThumbnailRequestIsCancelled(_ thumbnail: QLThumbnailRequest!) -> BoolParameters
- thumbnail:
The thumbnail request object.
Return Value
true if the request is being cancelled, false otherwise.
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
QLThumbnailRequestCopyContentUTI(_:)QLThumbnailRequestCopyOptions(_:)QLThumbnailRequestCopyURL(_:)QLThumbnailRequestCreateContext(_:_:_:_:)QLThumbnailRequestFlushContext(_:_:)QLThumbnailRequestGetDocumentObject(_:)QLThumbnailRequestGetGeneratorBundle(_:)QLThumbnailRequestGetMaximumSize(_:)QLThumbnailRequestGetTypeID()QLThumbnailRequestSetDocumentObject(_:_:_:)QLThumbnailRequestSetImage(_:_:_:)QLThumbnailRequestSetImageAtURL(_:_:_:)QLThumbnailRequestSetImageWithData(_:_:_:)QLThumbnailRequestSetThumbnailWithDataRepresentation(_:_:_:_:_:)QLThumbnailRequestSetThumbnailWithURLRepresentation(_:_:_:_:_:)