swift - How can I make an NSViewController topmost in Xcode? -

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i know if there way make 1 of nsviewcontrollers stay on top of rest of them in xcode or swift 2. working os x cocoa. thanks!

i assume have nsviewcontrollers in multiple windows, , it's 1 of windows want keep on top of others. done setting window.level:

window.level = int(cgwindowlevelforkey(.floatingwindowlevelkey))

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