Extended maintenance of Ruby versions 1.8.7 and 1.9.2 ended on July 31, 2014. Read more
For detail, see the MSDN.
— HKEY_*
Predefined key ((*handle*)). These are Integer, not Win32::Registry.
— REG_*
Registry value type.
— KEY_*
Security access mask.
— KEY_OPTIONS_*
Key options.
If the key is created newly or opened existing key. See also Registry#disposition method.