在10.11中，mac应用程序如何在用户摇动鼠标(光标变大)时收到通知

import Cocoa

@NSApplicationMain
class AppDelegate: NSObject, NSApplicationDelegate {

    let statusItem = NSStatusBar.system.statusItem(withLength: NSStatusItem.squareLength)

    func applicationDidFinishLaunching(_ aNotification: Notification) {
        if let button = statusItem.button {
            button.image = NSImage(named: NSImage.Name("StatusBarButtonImage"))
        }
        
        // 监听鼠标摇动事件
        NSEvent.addGlobalMonitorForEvents(matching: .mouseMoved) { event in
            // 光标变大时触发通知
            if event.deltaX > 0 || event.deltaY > 0 {
                self.sendNotification()
            }
        }
    }
    
    func sendNotification() {
        let notification = NSUserNotification()
        notification.title = "鼠标摇动通知"
        notification.informativeText = "用户摇动了鼠标"
        notification.soundName = NSUserNotificationDefaultSoundName
        
        NSUserNotificationCenter.default.deliver(notification)
    }
}