VC Language - Re: Is there a way for Windows Service to Read/Write HKCU Reg key

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Re: Is there a way for Windows Service to Read/Write HKCU Reg key

Jochen Kalmbach [MVP]

2005-06-10, 8:59 am

Hi Polaris!

> I'm writing a Windows Service program which needs to read/write the
> HKEY_CURRENT_USER registry key for the current logged on user. I know that
> for a Windows service does not have concept of HKCU since it is always
> running in SYSTEM's context. But is there a way (trick?) for a service to
> access the HKCU registry key?

1. Get a token to an user for example via:
- LogonUser
- OpenProcessToken
- DuplcateToken

2. Use "LoadUserProfile" to load the user-profile.
Then you have the handle to the "HKEY_CURRENT_USER"
registry key in the "PROFILEINFO.Profile" entry
(with KEY_ALL_ACCESS).

--
Greetings
Jochen

My blog about Win32 and .NET
http://blog.kalmbachnet.de/

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