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: Dave DeLong <email@hidden>
- Date: Fri, 16 Jan 2009 14:15:18 -0700
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.
Dave
On Jan 16, 2009, at 2:08 PM, Alexander Reichstadt wrote:
Hi,
I have a phenomenon I am exploiting but unless I know for sure why
it works must stop to use. The objective is to make sure that while
the mousebuttons is being pressed no other modifier key is pressed,
if anything is pressed the whole method return. Testing for 256
seems to work, why?
NSUInteger modifierFlags = [currentEvent modifierFlags];
if (modifierFlags!=256) return;
Is there some documentation that supports this test, or do I have to
check for all the different keys not to be pressed instead?
Thanks
Alex
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