Re: [PATCH v5 0/5] MR820: Implement roothandle parameter NtLoadKeyEx

[Huw Davies (＠huw)]

My Windows SDK has `REG_APP_HIVE` defined to 0x10.  It also has `REG_PROCESS_PRIVATE` as 0x20, which is presumably what `REG_PROCESS_APPKEY` gets mapped to.

If the tests aren't going to work on Win 7, then skip them as soon as the first call returns `STATUS_INVALID_PARAMETER_6`.

Since you've found that the key return is only available for an app key, then I don't think it makes sense to split this MR up as I'd previously suggested. That means we need the filename logic back in.

A couple of notes on that: When passing strings to the server, we typically don't nul-terminate them and pass the length instead.  Also, there is logic there already that copes with loading and saving branches i.e. the `save_branch_info` stuff.  Have you looked into adapting that?

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https://gitlab.winehq.org/wine/wine/-/merge_requests/820#note_8694