https://bugs.winehq.org/show_bug.cgi?id=39768
--- Comment #5 from legluondunet@free.fr legluondunet@free.fr --- (In reply to Henri Verbeet from comment #3)
I'm sure there would be cases where this kind of thing would be useful, but to me it also sounds like something that would be better handled by the window manager or compositor instead of by each application individually.
You are right, it will be a good idea for compositor/window manager to implement this feature. I know only a compositor that can zoom to a window, it's compiz. But others apps like Dosbox, ScummVM, Mame and others emulators already implement this feature: whatever the game native resolution, the game resolution/content is adapted (scaled/stretched) to the window or desktop. For the moment play a game with a 640x480 ou 800x600 resolution is a pain with Wine on modern screen.