Windows XP support about winreg HOT 1 CLOSED

I'm sorry, I currently have no plans to support Windows XP (I may consider doing that as a paid contract, though).

I think that using the WinXP-compatible RegQueryValueEx does have some security problems and requires more checks (and so writing more complex code).
For example, when retrieving string data, RegGetValue checks for a terminating NUL character, and if it is not found, the function automatically adds one and returns a safe NUL-terminated string back to the caller. On the other hand, RegQueryValueEx is less safe in that regard, as it does not perform such nice security check on strings read from the registry. So, we have to write additional code ourselves for that purpose.
So, back-porting the current code to Windows XP is not just a matter of simply forwarding calls to RegQueryValueEx, but it would require a detailed code analysis, and likely writing additional code to keep good level of safety (e.g. regarding proper NUL-termination of strings retrieved from the registry).

from winreg.