The following are class type values.
Value
Name
0x00000000
MM_IO_CLASS
0x00000001
MM_APPLICATION_CLASS
0x00000002
MM_FILTER_CLASS
0x00000003
MM_IDENTIFIER_CLASS
0x00000004
MM_NOTIFY_CLASS
0x00000005
MM_OBJECT_MANAGER_CLASS
0x00000006
MM_RESERVATION_CLASS
0x00000007
MM_ATTRIBUTE_CLASS
0x00000008
MM_MESSAGE_CLASS
0x00000009
MM_IO_SUBSYSTEM_CLASS
0x0000000A
MM_MAX_INTERNAL_CLASSES