Making a full screen Cocoa app

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+2 Q:

Making a full screen Cocoa app

+4 A:

Make a borderless window, the size of the menu-bar screen (screen 0—not [NSScreen mainScreen]), positioned at 0,0, with window level kCGDesktopWindowLevel.

Remember that you will need to observe for screen frame-change notifications (when the user changes the screen dimensions), and that you should correctly handle the case of no screen at all (headless Mac).

Peter Hosey 2009-10-03 05:01:41

Tried this and it does work to a certain extent. Issue is that other windows (e.g. Finder windows and other app windows) go below my full screen window. I need them to be positioned ABOVE my full screen window. Any ways to make this work?Thanks

macatomy 2009-10-03 16:06:03

Like I said, set the window level to `kCGDesktopWindowLevel`.

Peter Hosey 2009-10-03 20:32:03

I think @Peter Hosey’s solution should work, but to make other windows go on top, you will probably need to change the window level to something else.

But, I implore you, do not do this. This will be the most bugly application the Macintosh has ever seen. There are a lot of really good user interface paradigms that you can use, and "replicating" the main desktop interface of Mac OS X is generally not one of them. That is, unless you are reimplementing Time Machine or something like that.

Jonathan Sterling 2009-10-03 16:39:55

This is not to be used as a normal OS X app. I'm using it as basically a desktop replacement for a minimal version of OS X I'm using as an emergency disk (has no Finder or Dock, so I need to make my own interface). I have tried setting the window level to NSDockWindowLevel but it seems to have no effect.

macatomy 2009-10-03 17:13:51

Figured it out :) Set the window level to -1 and now it displays below all other windows :D.

macatomy 2009-10-03 17:31:17

ansaurus

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Making a full screen Cocoa app

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