Re: modifier-flags with no key pressed and mouseDown 256, why?
Re: modifier-flags with no key pressed and mouseDown 256, why?
- Subject: Re: modifier-flags with no key pressed and mouseDown 256, why?
- From: Shawn Erickson <email@hidden>
- Date: Fri, 16 Jan 2009 14:29:02 -0800
On Fri, Jan 16, 2009 at 1:15 PM, Dave DeLong <email@hidden> wrote:
> My understanding is that the modifierFlag "256" means that no other
> modifiers are pressed. I haven't found it in the docs anywhere, but I
> believe that you can count on "256" meaning "no flags". Every machine I've
> tested this on (I've done a bunch of CGEvent stuff recently) seems to agree.
Unsafe assumption. You are just lucky that some lower bit (device
dependent bit) is being set for you. I know of no documentation that
says this bit will always set. Additionally if some other device
dependent bit is set your assumption would be broken.
-Shawn
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