http://bugs.winehq.org/show_bug.cgi?id=15118
--- Comment #38 from Will Tipton wtipton@hmc.edu 2012-05-03 09:04:53 CDT --- Unable to test it. Seems like bug 15848 is back (or rather, it was never actually fixed), and the window-minimizing workaround described in that bug report is no longer working for me.
This was tested after the commit you link to, and the HUD was still not working, as described above. Basically, proper functioning is that the HUD window (most of which is transparent) fully covers the poker table window. In wine, the drawn parts of the window showed up correctly, but the transparent parts were solid black instead. Additionally, it is necessary to be able to click and interact with the underlying poker table window 'through' the (mostly-transparent) HUD window.