如何更新實時NSSlider值？

Question

我有滑塊的音量值。 我需要改變音量。 我的代碼有什么問題？

@IBOutlet weak var volumeSliderCurr: NSSlider!

@IBAction func volumeSlider(sender: AnyObject) {
    var event: NSEvent = NSApplication.sharedApplication().currentEvent!
    mouseUp(event)
}

override func mouseUp(theEvent: NSEvent) {
    super.mouseUp(theEvent)
    audioPlayer.volume = volumeSliderCurr.floatValue
    currVolume = volumeSliderCurr.floatValue
}

Answer 1

如果在Interface Builder的屬性中設置了“ Continuous ，則會獲得滑塊值的永久更新：