This call returns an aggregation containing all instances referencing the given instance. note: this is independent from if there are inverse relations defining such an aggregation or parts of it.


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

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

Property instance

Size: 64 bit / 8 byte (value)