http://bugs.winehq.org/show_bug.cgi?id=18517
--- Comment #41 from phaethon eriks00@moon.lv --- You mean wintab32.dll? I believe it is more tablet driver than MS. In my case I see wintab32.dll requests it from Wacom's dll. Values in my case are mathching screen pixels. So, using GetSystemMetrics is likely a good idea.