http://bugs.winehq.org/show_bug.cgi?id=28168
--- Comment #11 from Dmitry Timoshkov dmitry@baikal.ru 2011-08-26 23:25:09 CDT --- So, the VK_OEM_3 mapping should be fixed only for some keyboard layouts. Did you try to edit the keyboard layout table you are interested in at dlls/winex11.drv/keyboard.c ? Or try to run 'setxkbmap us' before running your application.