如何在插入MacOS外接显示器时获得通知

import Cocoa
import IOKit.display

func listConnectedDisplays() {
    let service = IOServiceGetMatchingService(kIOMasterPortDefault, IOServiceMatching("IODisplayConnect"))
    var iterator: io_iterator_t = 0
    if IOServiceGetMatchingServices(kIOMasterPortDefault, IOServiceMatching("IODisplayConnect"), &iterator) == kIOReturnSuccess {
        var display: io_object_t
        while (display = IOIteratorNext(iterator)) != 0 {
            var info = IODisplayCreateInfoDictionary(display, kIODisplayOnlyPreferredName)
            let name = info?[kDisplayProductNameKey] as? String ?? "Unknown Display"
            print("Connected Display: \(name)")
            IOObjectRelease(display)
            CFRelease(info as CFTypeRef)
        }
        IOObjectRelease(iterator)
    }
}

listConnectedDisplays()