[Bug 39730] FillRect() confuses 16bit brush handles with color constants

https://bugs.winehq.org/show_bug.cgi?id=39730

--- Comment #10 from Dmitry Timoshkov  ---
(In reply to Nikolay Sivov from comment #9)
> Maybe it will occasionally work, but it's not a solution, because
> GetClassInfo() returns original brush handle.

Does the application depend on this?
> And manually created 32bit
> brush handle truncated to 16bit, and then passed again through FillRect16 ->
> FillRect will break in same way, when LOWORD is low enough.

You said that FillRect16 is not involved at all? If it actually is, then
a possible solution was already suggested.