James Teh b2865987fc Bug 1736742 part 2: Provide ability to register a COM handler inside an MSIX container. r=nalexander,jmathies
We could do this in HKLM using registry.dat, but that file is difficult to manage.
Instead, we register in HKCU at runtime.
Also, RegCreateKeyTransacted doesn't work in MSIX containers, so we must use RegCreateKeyEx.

Differential Revision: https://phabricator.services.mozilla.com/D129950
2021-11-05 06:25:45 +00:00
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