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Re: Scroll Lock button press event (PC keyboard)
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Re: Scroll Lock button press event (PC keyboard)


  • Subject: Re: Scroll Lock button press event (PC keyboard)
  • From: Nick <email@hidden>
  • Date: Sat, 15 Dec 2012 05:45:44 +0200

No, nothing lights up. In fact, the only LED on my PC keyboard that can
light up in Mac OS from keypresses is the Caps Lock.
I am wondering if I could use IOKit to get Scroll lock keypress event,
though?.


2012/12/15 Kyle Sluder <email@hidden>

> On Dec 14, 2012, at 5:55 PM, Nick <email@hidden> wrote:
>
> > Hello
> > I need to intercept a scroll lock key event (that can be found on most of
> > PC keyboards).
> > It seems that AppKit framework does not pass any NSEvent's to the
> > application when this button is pressed.
> > Neither works addGlobalMonitorForEventsMatchingMask (access for assistive
> > devices is enabled). I tried the mask
> NSFlagsChangedMask|NSKeyPressedMask -
> > the block gets invoked when any button is pressed, except the scroll
> lock.
> >
> > Is it possible at all to get a notification in my app when scroll lock is
> > pressed? Using IOKit maybe?
>
> Open the Keyboard Viewer (you might need to turn on the Input Languages
> menu extra in System Preferences). Does anything light up when you press
> the Scroll Lock key?
>
> If yes, use that key's virtual key code. If not, you're sunk.
>
> --Kyle Sluder
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