PHImageRequestOptionsMBS.ProgressHandlerMBS(progress as double, error as NSErrorMBS, byref stop as boolean, info as Dictionary, tag as Variant)

Type	Topic	Plugin	Version	macOS	Windows	Linux	iOS	Targets
delegate	Photos	MBS Mac64bit Plugin	20.2	✅ Yes	❌ No	❌ No	✅ Yes	Desktop & iOS

The delegate that Photos calls while downloading asset data from iCloud. Used by the progressHandler property.

If you request an image whose data is not on the local device, and you have enabled downloading with the networkAccessAllowed property, Photos calls your block periodically to report progress and to allow you to cancel the download.

Photos calls this block in an arbitrary serial queue. Dispatch to the main thread if your handler needs to update the user interface.

The method takes the following parameters:
progress: A floating-point value indicating the progress of the download. A value of 0.0 indicates that the download has just started, and a value of 1.0 indicates the download is complete.
error: An NSErrorMBS object describing an error that occurred when attempting to download the image, or nil if no errors have occurred.
stop: A pointer to a Boolean value. To cancel the download, set stop to true inside the block.
info: A dictionary providing additional information about the status of the image request. See Image Result Info Keys for possible keys and values. For example, a true value for the key PHImageResultIsDegradedKey indicates that Photos may send the full-quality version of the image later, depending on the value of the image request’s deliveryMode property.

If the method call is asynchronously dispatched to main thread, the stop property does not work.

Some methods using this delegate:

• PHAssetResourceRequestOptionsMBS.SetProgressHandler(ProgressHandler as ProgressHandlerMBS, tag as variant = nil)
• PHContentEditingInputRequestOptionsMBS.SetProgressHandler(ProgressHandler as ProgressHandlerMBS, tag as variant = nil)
• PHImageRequestOptionsMBS.SetProgressHandler(ProgressHandler as ProgressHandlerMBS, tag as variant = nil)
• PHLivePhotoRequestOptionsMBS.SetProgressHandler(ProgressHandler as ProgressHandlerMBS, tag as variant = nil)
• PHVideoRequestOptionsMBS.SetProgressHandler(ProgressHandler as ProgressHandlerMBS, tag as variant = nil)
• VNRecognizeTextRequestMBS.setProgressHandler(ProgressHandler as VNProgressHandlerMBS, tag as variant = nil)