AAUsbAccessoryOpenCompletionHandler Delegate

Definition

Namespace:: AccessoryAccess

Assembly:: Microsoft.macOS.dll

Important

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A completion handler for opening a USB accessory.

public delegate void AAUsbAccessoryOpenCompletionHandler(IntPtr device, NSError? error);

type AAUsbAccessoryOpenCompletionHandler = delegate of nativeint * NSError -> unit

Parameters

device: IntPtr
nativeint

A live IOUSBHostDevice handle that remains valid until the accessory is closed.

error: NSError

The error that was encountered, or null if no error occurred.

Remarks

IOUSBHost is not bound in macios, so this handle is surfaced as a raw IntPtr. To perform USB I/O, hand the accessory to a native/Swift service via CreateXpcRepresentation() or bridge the handle through native IOUSBHost code.

Applies to