http://bugs.winehq.org/show_bug.cgi?id=27854
--- Comment #1 from Nikolay Sivov bunglehead@gmail.com 2011-09-29 18:03:18 CDT --- This is not about LVM_SETTEXTBKCOLOR not working, it works fine and sets CLR_NONE if asked to. The problem is in custom draw code that expects some fields to be set in notification handler:
--- infoPtr->clrTextBk = nmlvcd.clrTextBk; infoPtr->clrText = nmlvcd.clrText; ---
mnlvcd.* fields are not set and contain previously assigned values, LVM_SETTEXTBKCOLOR goes after notification SendMessage() and before mentioned lines so we never get CLR_NONE.
If you comment out first line you'll see transparent text, I feel like all custom draw code should be inspected, cause such context dependencies are hard to resolve without breaking anything.