QLThumbnailCancel(_:)

Declaration

func QLThumbnailCancel(_ thumbnail: QLThumbnail!)

Parameters

• thumbnail:

  The thumbnail to cancel.

Discussion

If you use QLThumbnailDispatchAsync(_:_:_:) to request the thumbnail, calling this function invokes the completion callback of QLThumbnailDispatchAsync(_:_:_:). If you use synchronous mode, QLThumbnailCopyImage(_:) returns NULL immediately.

See Also

Creating thumbnails

• QLThumbnailImageCreate(_:_:_:_:)
• QLThumbnailCreate(_:_:_:_:)
• QLThumbnailDispatchAsync(_:_:_:)
• QLThumbnailCopyDocumentURL(_:)
• QLThumbnailCopyImage(_:)
• QLThumbnailCopyOptions(_:)
• QLThumbnailGetContentRect(_:)
• QLThumbnailGetMaximumSize(_:)
• QLThumbnailGetTypeID()
• QLThumbnailIsCancelled(_:)