[Bug 39637] Samsung TV SDK 3.5.2 (MFC MDI app) crashes on startup ('comctl32' needs to register builtin 'Button' class with 'CS_GLOBALCLASS')

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=39637

--- Comment #9 from Nikolay Sivov <bunglehead at gmail.com> ---
(In reply to Anastasius Focht from comment #7)
> 
> Redirection of window classes according to the current activation context is
> supported by USER32 in Windows XP and higher. Part of the feature is that
> any module, such as COMCTL32.DLL, that implements window classes can declare
> its support through an assembly manifest. If a window cannot be created
> because the requested class is not yet registered, but the class is
> supported by the module associated with the current activation context, then
> USER32 can call that module to get the class registered, and then retry the
> window creation. The module must export a function named RegisterClassNameW.
> COMCTL32 does this in versions 5.82 and 6.0 from Windows XP SP2, but not
> Windows XP SP3, and higher, with the effect that InitCommonControlsEx
> becomes unnecessary.

Right, RegisterClassNameW is not longer used, versioned classes have to be
registered on dll initialization. Button is actually not a bad case to start
working on this, I believe it's best to duplicate button.c, and extend it with
new styles and messages, and of course theme_button.c disaster has to go away.

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