On Oct 21, 2012, at 11:05 PM, Daiwei Li <[email protected]> wrote: > > You might try a Quartz event tap at kCGSessionEventTap. I suspect that >> -addGlobalMonitorForEventsMatchingMask:... is equivalent to >> kCGAnnotatedSessionEventTap, and maybe that's the wrong place for Mission >> Control. (Although I would hope that its events would be routed in the >> usual manner. *shrug*) > > > I haven't tried this. I suspect it would be the same as the Cocoa API, and > in any case, requires my application to be accessibility enabled. > >> I'm not sure why you're looking to treat Mission Control differently than >> all Mac apps have treated the application switcher for its entire history – >> which is to say, ignored it. > > > It doesn't pose a problem to most applications because in most > applications, there's not much damage you can do by having a mouse button > held down indefinitely. The application I'm working on uses a mouse to > drive a robot. Having it held down when the user doesn't intend it to is a > safety hazard.
Rather than a global event tap, try installing a local event monitor using +[NSEvent addLocalMonitorForEventsMatchingMask:handler:] and watching out for events of type NSSystemDefined. Local monitors, unlike global ones or global CGEvent taps, do not require assistive access enabled. Have your handler abort your mouse-tracking loop if it gets an event that looks like Mission Control. I cant recall specifically what such an event looks like. We had to do this to work around some mouse-tracking bugs with Spaces in 10.7. Alternatively, if you're running the mouse tracking loop yourself, you can just check the return value of -[NSApplication nextEventMatchingMask::::]. But I'm kind of partial to the idea of installing the handler once and signalling to all possible mouse tracking loops that could be running that they should abort. --Kyle Sluder _______________________________________________ Cocoa-dev mailing list ([email protected]) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to [email protected]
