2010/9/12 <cocoa-dev-requ...@lists.apple.com> > 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.
Given a CGDirectDisplayID, you can use IORegistryEntryCreateCFProperties to get the display properties. In the returned CFDictionary, the value associated with the IODisplayPrefsKey remains the same before/after any GPU switch. I don't know if this is documented anywhere, it's just the result of my observations. -- Stéphane _______________________________________________ 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
