When I read a JT file using JT Open Toolkit and use the JtkHierarchy::numProps and JtkHierarchy::getProp functions, I get the list of an object’s properties. But I have other CAD tools which show more properties, including properties not available using the Toolkit, for example, JT_PROP_MEASUREMENT_UNITS and JT_PROP_NAME. Are these actual properties or something else? How can I access this data using the Toolkit?
Reminder, these properties are not there by default. The authoring tool has to have calls to populate them. You might want to check the source for your JT data.