> On Sep 11, 2010, at 10:57 PM, Trygve Inda wrote: > >>> On Sep 11, 2010, at 10:52 AM, Trygve Inda wrote: >>> >>>> Is there a way to be notified when the graphic card is switched? >>> >>> NSApplicationDidChangeScreenParametersNotification >> >> When it is running on the slow card, the CGDirectDisplayID will be x, and on >> the fast card it will be y. Is there anyway to derive x from y or y from x? >> >> I am trying to be able to uniquely identify screens even before/after a >> processor switch. > > Perhaps the index in the display list (either of +[NSScreen screens] or > CGGetActiveDisplayList())? Alternatively, based on position? > > Regards, > Ken
Position is actually a good idea. Do you have an i7/i5 ? On my pre-i7/i5 MBP 15, the two graphic cards differ by 2 on the CGDirectDisplayID. One other developer also reported this on i7/i5 systems. I know it is not great to rely on this, but does anyone have a case where is differs by other than 2? Trygve _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
