By EnumType object, you could get all possible values of the various enumerations in Inventor API, like the UnitsTypeEnum, ObjectTypeEnum and so on. This object is accessed by
Application.TestManager while TestManager is a hidden object currently. This means you could use it but we do not support it. The code below dumps all values of ObjectTypeEnum.
Sub GetEnumType()
Dim oEnumType As EnumType
Set oEnumType = ThisApplication.TestManager.GetEnumType("ObjectTypeEnum")
Dim index As Integer
index = 0
Do While index < oEnumType.Count
Debug.Print oEnumType.ValueName
Debug.Print oEnumType.Value
oEnumType.MoveNext
index = index + 1
Loop
End Sub