i like the editor’s ui, it’s very beautiful.
is it use mfc + skin?or something else?
how can i use this ui in my application?
thanks.
Many of them are inside the package contents of the Unity app as nibs, but I believe it is illegal to use the imagery they use for the ui without their consent.
And you would need to convert the nibs to a format Unity reads, probable a million GUI Labels and pngs or psds. Then build the GUI from scripts.
Basically, you can’t. 
you don’t have editor UI present in the client anyway (with that I mean the real UI, not its look), so it makes little to no sense.
the client UI is more restricted
maybe the nib file is used in mac, or you mean unity use some tools which can port the aqua to windows?
and i find mfc80.dll in the editor directory.