NSMenuItem给出的布尔变量

Question

我试图通过单击/取消单击NSMenuItem来定义全局布尔变量，并在标签前面用勾号表示值，就像当前在f.lux (cf )中所做的那样。(见下图)

我的菜单目前是按下面的方式构建的，我在NSMenuItem文档中找不到如何实现它。

有人已经做过了吗？

let menu = NSMenu()

menu.addItem(NSMenuItem.separator())
menu.addItem(NSMenuItem(title: "Autocheck", action: #selector(AppDelegate.autocheck(_:)), keyEquivalent: ""))

menu.addItem(NSMenuItem(title: "Quit", action: #selector(NSApplication.terminate(_:)), keyEquivalent: "q"))
statusItem.menu = menu

​

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Answer 1

方法是使用state property of NSMenuItem。最后代码是：

let menu = NSMenu()

menu.addItem(NSMenuItem.separator())
let autocheck = NSMenuItem(title: "Autocheck", action: #selector(AppDelegate.automount_bool(_:)), keyEquivalent: "")

if automount==true{
    autocheck.state = NSControl.StateValue.on
}else{
    autocheck.state = NSControl.StateValue.off
}

menu.addItem(autocheck)
menu.addItem(NSMenuItem(title: "Quit", action: #selector(NSApplication.terminate(_:)), keyEquivalent: "q"))

statusItem.menu = menu