Comment 10 for bug 619477

I don’t think removing the buttons from the window title bar (like proposal 1) is a good idea. Users are used to having these buttons directly in the title bar, not on a probably far away menu bar. If the window is maximized, this is okay as the menu bar practically becomes the title bar, but if the window is not maximized the buttons are expected to be directly in the title bar. Also, many dialog windows don’t have menu bars, so the title buttons would be the only buttons in the menu bar making them even more hard to find.

Instead, I would also use the application icon, but maybe in a different way, as shown in the attachment.