http://bugs.winehq.org/show_bug.cgi?id=27499
Vincent Povirk madewokherd@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |WONTFIX
--- Comment #4 from Vincent Povirk madewokherd@gmail.com 2011-10-10 11:07:41 CDT --- I'd have no objection to providing a private interface that you can use to ask for the original color depth, or any other information you need that's in the ICONDIRENTRY or bitmap header (but I'd need to know Alexandre is OK with this). And I'm sure there are other approaches you could use that don't need a private interface.
I'm certain you could make this work with less effort and less code than it would take to write an ico encoder. Resolving WONTFIX.