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.
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.
    Constants
      | HKEY_CLASSES_ROOT | = | 0x80000000 | 
| HKEY_CURRENT_USER | = | 0x80000001 | 
| HKEY_LOCAL_MACHINE | = | 0x80000002 | 
| HKEY_USERS | = | 0x80000003 | 
| HKEY_PERFORMANCE_DATA | = | 0x80000004 | 
| HKEY_PERFORMANCE_TEXT | = | 0x80000050 | 
| HKEY_PERFORMANCE_NLSTEXT | = | 0x80000060 | 
| HKEY_CURRENT_CONFIG | = | 0x80000005 | 
| HKEY_DYN_DATA | = | 0x80000006 | 
| REG_NONE | = | 0 | 
| REG_SZ | = | 1 | 
| REG_EXPAND_SZ | = | 2 | 
| REG_BINARY | = | 3 | 
| REG_DWORD | = | 4 | 
| REG_DWORD_LITTLE_ENDIAN | = | 4 | 
| REG_DWORD_BIG_ENDIAN | = | 5 | 
| REG_LINK | = | 6 | 
| REG_MULTI_SZ | = | 7 | 
| REG_RESOURCE_LIST | = | 8 | 
| REG_FULL_RESOURCE_DESCRIPTOR | = | 9 | 
| REG_RESOURCE_REQUIREMENTS_LIST | = | 10 | 
| REG_QWORD | = | 11 | 
| REG_QWORD_LITTLE_ENDIAN | = | 11 | 
| STANDARD_RIGHTS_READ | = | 0x00020000 | 
| STANDARD_RIGHTS_WRITE | = | 0x00020000 | 
| KEY_QUERY_VALUE | = | 0x0001 | 
| KEY_SET_VALUE | = | 0x0002 | 
| KEY_CREATE_SUB_KEY | = | 0x0004 | 
| KEY_ENUMERATE_SUB_KEYS | = | 0x0008 | 
| KEY_NOTIFY | = | 0x0010 | 
| KEY_CREATE_LINK | = | 0x0020 | 
| KEY_READ | = | STANDARD_RIGHTS_READ | KEY_QUERY_VALUE | KEY_ENUMERATE_SUB_KEYS | KEY_NOTIFY | 
| KEY_WRITE | = | STANDARD_RIGHTS_WRITE | KEY_SET_VALUE | KEY_CREATE_SUB_KEY | 
| KEY_EXECUTE | = | KEY_READ | 
| KEY_ALL_ACCESS | = | KEY_READ | KEY_WRITE | KEY_CREATE_LINK | 
| REG_OPTION_RESERVED | = | 0x0000 | 
| REG_OPTION_NON_VOLATILE | = | 0x0000 | 
| REG_OPTION_VOLATILE | = | 0x0001 | 
| REG_OPTION_CREATE_LINK | = | 0x0002 | 
| REG_OPTION_BACKUP_RESTORE | = | 0x0004 | 
| REG_OPTION_OPEN_LINK | = | 0x0008 | 
| REG_LEGAL_OPTION | = | REG_OPTION_RESERVED | REG_OPTION_NON_VOLATILE | REG_OPTION_CREATE_LINK | REG_OPTION_BACKUP_RESTORE | REG_OPTION_OPEN_LINK | 
| REG_CREATED_NEW_KEY | = | 1 | 
| REG_OPENED_EXISTING_KEY | = | 2 | 
| REG_WHOLE_HIVE_VOLATILE | = | 0x0001 | 
| REG_REFRESH_HIVE | = | 0x0002 | 
| REG_NO_LAZY_FLUSH | = | 0x0004 | 
| REG_FORCE_RESTORE | = | 0x0008 | 
| MAX_KEY_LENGTH | = | 514 | 
| MAX_VALUE_LENGTH | = | 32768 |