http://bugs.winehq.org/show_bug.cgi?id=25549
--- Comment #17 from Vincent Povirk madewokherd@gmail.com 2011-09-20 11:59:04 CDT --- If for some reason native gdiplus treats HDC's with 32-bit DIBs selected into them as having alpha data (and we'd need a test to show that), then we need to create a GpBitmap object for the DIB in GdipCreateFromHDC2.