從imagecapturecore-rs箱這里。
https://github.com/brandonhamilton/image-capture-core-rs/issues/7
當連接一個PTP(圖片傳輸協議)設備時,只有didOpenSessionWithError會觸發,錯誤值為None,而NSArray的計數為0。
decl.add_method(
sel! (device:didOpenSessionWithError:),
device_did_open_session_with_error as extern "C" fn(&Object, Sel, id, id),
);
println!("
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