如何在NSMenu中放置水平滑块(Swift 3,Xcode 8) [英] How to place Horizontal Slider in NSMenu (Swift 3, Xcode 8)
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问题描述
从macOS Sierra开始,音量菜单栏项提供了一个水平滑块项来更改系统的音量:
As of macOS Sierra the volume menu bar item provides a horizontal slider item to change the system's volume:
我想在自己的应用程序中采用此概念,并提出了以下课程:
I'd like to adopt this concept for my own application and came up with the following class:
import Cocoa
@NSApplicationMain
class AppDelegate: NSObject, NSApplicationDelegate {
@IBOutlet weak var window: NSWindow!
let statusItem = NSStatusBar.system().statusItem(withLength: -2)
func applicationDidFinishLaunching(_ aNotification: Notification) {
let menu = NSMenu()
let menuItem = NSMenuItem()
let statusSlider = NSSlider()
menu.addItem(NSMenuItem(title: "Slider:", action: nil, keyEquivalent: ""))
menuItem.title = "Slider 1"
menuItem.view = statusSlider
menu.addItem(menuItem)
menu.addItem(NSMenuItem.separator())
menu.addItem(NSMenuItem(title: "Quit", action: Selector("terminate:"), keyEquivalent: "q"))
statusItem.image = NSImage(named: "NSStatusAvailable")
statusItem.menu = menu
}
}
但是菜单上没有显示滑块.有人知道我做错了什么吗?
But there is no slider showing up in the menu. Has anybody a clue what I did wrong?
推荐答案
NSSlider的初始帧大小为零.您需要先设置大小,然后再将其添加到菜单项.
The initial frame size of NSSlider is zero. You need to set the size before adding it to a menu item.
statusSlider.setFrameSize(NSSize(width: 160, height: 16))
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