There is nothing like this. Individual NSWindow objects have an NSWindowCollectionBehavior setting, but that one has nothing to do with the system pref. I repeat, there is NO public way to get (and certainly not set) this behavior of the app.
There is nothing like this. Individual NSWindow objects have an NSWindowCollect ionBehavior setting, but that one has nothing to do with the system pref. I repeat, there is NO public way to get (and certainly not set) this behavior of the app.