On 29 Jul 2015, at 13:25, Dave <d...@looktowindward.com> wrote: > Yes I saw this, I wasn’t sure what “Current User Session” meant in this case. > Also if there could be a window owned by one App with the same CGWindowNumber > as another App, IOW, if there could be more than one Window in the Window > Array that has the same number? e.g. I need more than once piece of info to > ensure it is unique.
AFAIK it's the number the window server uses to identify a window. So unless you have multiple user sessions (i.e. you have a second user logged in using Fast User Switching), there is only one window with that ID at a time. It is unique across all the applications running under the same user's account. Which usually is all windows your application can see (unless your app is running as root, but really, nobody except maybe login screen plugin developers would do that). Note that I'm saying "at a time". There is no guarantee that an application might not close the window whose number you have, then open a new one, and get a new window with the same number. It's unlikely to happen, but I don't think it's stated anywhere that that is impossible. OTOH, also keep in mind that an application might close a window and re-open it instead of just hiding and showing it, which might change its window number. Cheers, -- Uli Kusterer "The Witnesses of TeachtText are everywhere..." _______________________________________________ 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: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
