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How can I detect global key events without using addGlobalMonitorForEventsMatchingMask. I need only the notification that a key was pressed, do not need to know which key exactly.
You could poll
CGEventSourceSecondsSinceLastEventTypefor the time since the last keyboard event. I don’t know of any way to be notified of a key event without finding out what key was pressed. A Quartz event tap would have the same security restrictions asaddGlobalMonitorForEventsMatchingMask, which I’m guessing is why you want to avoid it.