http://bugs.winehq.org/show_bug.cgi?id=33309
--- Comment #2 from Austin English austinenglish@gmail.com 2013-04-01 12:23:40 CDT --- That would be RIDEV_INPUTSINK: If set, this enables the caller to receive the input even when the caller is not in the foreground. Note that hwndTarget must be specified.