QLThumbnailCopyImage(_:)
Returns a thumbnail image.
Declaration
func QLThumbnailCopyImage(_ thumbnail: QLThumbnail!) -> Unmanaged<CGImage>!Parameters
- thumbnail:
The thumbnail to compute.
Return Value
A thumbnail image, or NULL if the Quick Look framework can’t create a thumbnail.
Discussion
If you call this function directly without using QLThumbnailDispatchAsync(_:_:_:), this function blocks the calling thread until it finishes computing the thumbnail.