Returns SDAI type for actual data stored in the instance for the attribute It may be primitive type, sdaiAGGR or sdaiADB Returns 0 for $ and *


public const string ifcenginedll = @"ifcengine.dll";

[DllImport(IFCEngineDLL, EntryPoint = "engiGetInstanceAttrType")]
public static extern Int64 engiGetInstanceAttrType(int_t instance, int_t attribute);    

Property instance

Size: 64 bit / 8 byte (value)

Property attribute

Size: 64 bit / 8 byte (reference)