To be fair, iOS and mouse events tend to finish on the concept of up. 
(Though often it's up & inside to trigger some action)

Sent from my iPhone

> On Jul 18, 2016, at 10:00 PM, Steve Mills <sjmi...@mac.com> wrote:
> 
>> On Jul 18, 2016, at 07:52:02, Dave <d...@looktowindward.com> wrote:
>> 
>> Hi,
>> 
>> Thanks, I’m looking at it now.
>> 
>> I’m a bit confused over the keyboard handling. I would have thought that the 
>> processing would take place on the KeyUp event, but it seems like its 
>> occurring on the KeyDown event which is where I am going wrong. 
>> 
>> I’m not sure what use NSKeyUp is in this case? The other thing is that a 
>> KeyDown with the AutoRepeat flag == YES seems to imply a an NSKeyUp? IOW, 
>> the events I see are:
>> 
>> NSKeyDown    Repeat == NO
>> NSKeyDown    Repeat == YES    ) If the Key is held down…..
>> NSKeyDown    Repeat == YES    )
>> NSKeyDown    Repeat == YES    )
>> NSKeyDown    Repeat == YES    )
>> NSKeyUp    Repeat == NO
> 
> Nope, as you discovered, KeyDown is where the action usually happens for most 
> things, because if it waited for KeyUp, then all the KeyRepeats that came 
> after the KeyDown would be missed, and you don't want to queue them all up 
> and release them on KeyUp. Just think of how it works when you're in a text 
> editor and hold down a key (just make sure you have that stupid system pref 
> set to NOT show the silly alt key popup thing, but work like a real key 
> repeat should).
> 
> --
> Steve Mills
> Drummer, Mac geek
> 
> 
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