http://bugs.winehq.org/show_bug.cgi?id=23707
--- Comment #3 from Dmitry Timoshkov dmitry@codeweavers.com 2010-07-19 05:55:02 --- Wine does a proper check in SetParent() but misses one in SetWindowLong/ GWL_HWNDPARENT. Does the SetWindowLong() really succeed?