Comment 3 for bug 657782

I think we should respect the OS`s Interface Guidelines and common behaviors.

* On MacOS X, the menubar hides if an application goes fullscreen. Moving the mouse on top of the application window temporarily displays the menubar again. This is what Mixxx currently does.
Hiding the applications menubar in non-fullscreen mode is a no-no. OSX should be excluded by this patch.
* On Windows, afaik you can disable the menubar in fullscreen as well as non-fullscreen mode for various applications. Holding the ALT Key temporarily displays the menubar again. This eliminates the need to have the annoying popup message.
* On Linux, what is the usual behavior here?

F10 shortcut is taken, the [AutoDJ] controls are already assigned to F9-F12 function keys.