[Bug 24611] Install Shield fails on 64bit multilib wine if WINEPREFIX was created by 64bit wine

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=24611

--- Comment #40 from Andrew Eikum <aeikum at codeweavers.com> 2013-09-25 14:12:24 CDT ---
Created attachment 46079
  --> http://bugs.winehq.org/attachment.cgi?id=46079
Misc fixes

Here's a patch which fixes the Titan Quest installer for me. It's three
incomplete patches rolled into one.

First, on Windows, RegisterTypeLib appears to register 32-bit typelibs into the
64-bit side of HKCR\Interfaces (HKCR\Typelib is mirrored, which is why this
already works). So this patch adds code to do that using KEY_WOW64_64KEY in
32-bit processes.

But, advapi32 is broken and uses the cached 32-bit HKEY for HKEY_CLASSES_ROOT
even if you specify the KEY_WOW64_64KEY. So this patch adds logic to avoid the
cached entries if any of the KEY_WOW64 flags are present.

Finally, tmarshal rigidly checks for a <HKCR\Typelib\...\win64> key when
running in 64-bit mode. For a 32-bit typelib, Windows's RegisterTypeLib only
creates a win32 key. I think tmarshal should fall back onto a win32 key if
win64 is not present. This patch does that, and it's enough to fix the
installer.

So I need to write some tests to verify what I just wrote, but this patch
should work for anyone who wants to test it.

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