UNKNOWN      an unknown type (no data allowed)

 INTEGER      32-bit integer

 LONG         32-bit long

 BYTE         8-bit unsigned

 CHAR         8-bit unsigned character

 REAL         64-bit double

 BOOLEAN      32-bit integer boolean or selector

 OBJECT_ID    32-bit integer representing an HOBJ

 FLOAT        32-bit float

 SHORT        16-bit signed

 XOBJECT      a single IDispatch* (no vectors)

 INTERFACE    a single IUnknown* (no vectors)

 VARIANT      a single VARIANT (no vectors)

mask for the type ID number part of the type

OR'ed in with another type for an Alias object

type flag for data-types

an mcobjTypeXOBJECT or derived type

a mcobjTypeINTERFACE or derived type

a mcobjTypeVARIANT or derived type