如何模拟连续按键

Question

我需要模拟连续按键。例如按住 'c' 键 5 秒钟。为了模拟按键事件，我尝试使用 CGEventCreateKeyboardEvent：

let event:CGEventRef! = CGEventCreateKeyboardEvent(nil, 8, true)
CGEventPost(CGEventTapLocation.CGSessionEventTap, event)

但它的作用就像点击按钮然后立即释放一样。我需要创建一个持续按住按钮（按下键）然后释放它（按下键）的事件。

Answer 1

我不确定你想要达到什么目的，但系统似乎会继续按住按钮。这个简单的实验证明了这一点。

func applicationDidFinishLaunching(aNotification: NSNotification) {
    print("waiting 4 seconds, use this time to position your cursor in a text field")
    let delayTime = dispatch_time(DISPATCH_TIME_NOW, Int64(4 * Double(NSEC_PER_SEC)))
    dispatch_after(delayTime, dispatch_get_main_queue(), {
        self.insertLetterZ()
    })
}

func insertLetterZ() {
    print("pressing shift")
    self.tapButton(56)

    print("holding button for 2 seconds")
    let delayTime = dispatch_time(DISPATCH_TIME_NOW, Int64(2 * Double(NSEC_PER_SEC)))
    dispatch_after(delayTime, dispatch_get_main_queue(), {
        print("tapping z, but Z will be selected (since shift is still being pressed)")
        self.tapButton(6)

        print("untapping z and shift")
        self.untapButton(6)
        self.untapButton(56)
    })
}

func tapButton(button: CGKeyCode) {
    let event = CGEventCreateKeyboardEvent(nil, button, true)
    CGEventPost(CGEventTapLocation.CGSessionEventTap, event)
}

func untapButton(button: CGKeyCode) {
    let event = CGEventCreateKeyboardEvent(nil, button, false)
    CGEventPost(CGEventTapLocation.CGSessionEventTap, event)
}

然而，如果用户在以编程方式按下 shift 时点击键盘，则此代码不会将字母大写。我还注意到，如果光标位置在 shift 和 z 之间发生变化，则将插入 "z" 而不是 "Z"

如何模拟连续按键

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swift