Window on top of other window

I have two NSWindows ( independent windows,No Parent and Child relationship), One Window should always be on top of the other Window.When I minimize and again maximize the mainWindow,second window should be on top of it. I used the makeKeyAndOrderFront to keep the window on top of the mainWindow [[self wi开发者_运维问答ndow] makeKeyAndOrderFront:self]; How can I achieve the above functionality.

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Found a similar question posted earlier: NSWindow - show new window that will always stay on top of current window

Hope this helps :)