Access denied with default RegKey constructor

[WimLeflere]

The default RegKey constructor tries to open the registry key with read and write access.

WinReg/WinReg/WinReg/WinReg.hpp

Line 172 in b5dbf0c

REGSAM desiredAccess = KEY_READ | KEY_WRITE

This cause problems for a lot of registry keys as they require elevated permissions to be able to be written.
E.g. 'HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB'

Maybe better to open the keys with read access only?
Or add the permission level as constructor argument?

[GiovanniDicanio]

I like the idea of adding a permission level as constructor argument. Thanks for the suggestion!

[GiovanniDicanio]

I've updated the code with this addition. Thanks.