I remember a site on MacOS vs Windows dialog boxes from way back in the late 90's, a time in which many confusing UI patterns abound. It's too bad it's still not around as it is a great guide on how to display the question to the user correctly.
It went on to display a few common(windows 95 I think) dialogs that would leave most users confused. Then showed the Mac dialog in similar operations where it was very clear what the intended outcome of each button would be.
If you ever stumble across it, I'd love to take a look at it. That sounds like a great resource.
I'm currently writing my first "big" GUI for work where I serve as both the main programmer and the UX designer. Things such as button ambiguity are things that, until this point, had never crossed my mind.
It went on to display a few common(windows 95 I think) dialogs that would leave most users confused. Then showed the Mac dialog in similar operations where it was very clear what the intended outcome of each button would be.