enum UoWActionType

typedef enum 
{
         UoWAddThisKey = 0,
         UoWAddChildKey = 1,
         UoWDeleteThisKey = 2,
         UoWDeleteChildKey = 3,
         UoWSetValueNew = 4,
         UoWSetValueExisting = 5,
         UoWDeleteValue = 6,
         UoWSetKeyUserFlags = 7,
         UoWSetLastWriteTime = 8,
         UoWSetSecurityDescriptor = 9,
         UoWRenameSubKey = 10,
         UoWRenameOldSubKey = 11,
         UoWRenameNewSubKey = 12,
         UoWIsolation = 13,
         UoWInvalid = 14
} UoWActionType;

Windows Vista Kernel Structures