We should be okay to do this, even on 10.6, according to this post: I've found some information about an extension here: FREObject _EnableFullScreenMode(FREContext ctx, void* functionData, uint32_t argc, FREObject argv) If the users decides to exit full screen mode they will see the app in a native window and can re-enter full screen mode using the icon you get in the top-right of a window. This is NOT using the displayState that Flash/Flex uses What I want to do is when the application loads, make the application go into full-screen mode using the correct native full-screen found in OS X Lion and above. I am building an application in Adobe AIR for Mac in HTML/JavaScript.
