如何使用Cocoa Mac os开发中的菜单项使鼠标悬停在NSControlSegment上？

import Cocoa

class ViewController: NSViewController {
    @IBOutlet weak var controlSegment: NSSegmentedControl!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        // 创建菜单项
        let menuItem1 = NSMenuItem(title: "菜单项1", action: #selector(menuItemClicked(_:)), keyEquivalent: "")
        let menuItem2 = NSMenuItem(title: "菜单项2", action: #selector(menuItemClicked(_:)), keyEquivalent: "")
        
        // 创建菜单
        let menu = NSMenu()
        menu.addItem(menuItem1)
        menu.addItem(menuItem2)
        
        // 将菜单与NSControlSegment关联
        controlSegment.setMenu(menu, forSegment: 0)
        
        // 监听鼠标事件
        controlSegment.target = self
        controlSegment.action = #selector(controlSegmentMouseEntered(_:))
    }
    
    @objc func controlSegmentMouseEntered(_ sender: NSSegmentedControl) {
        // 鼠标进入NSControlSegment时显示菜单
        controlSegment.menu?.popUp(positioning: nil, at: NSPoint(x: 0, y: controlSegment.frame.height), in: controlSegment)
    }
    
    @objc func menuItemClicked(_ sender: NSMenuItem) {
        // 处理菜单项点击事件
        if sender.title == "菜单项1" {
            // 执行菜单项1的操作
        } else if sender.title == "菜单项2" {
            // 执行菜单项2的操作
        }
    }
}