model input parameter is irrelevant, but is required for backwards compatibility


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

[DllImport(IFCEngineDLL, EntryPoint = "xxxxGetEntityAndSubTypesExtent")]
public static extern Int64 xxxxGetEntityAndSubTypesExtent(Int64 model, Int64 entity);    

Property model

Size: 64 bit / 8 byte (value)
The handle to the model. The model handle is static during its existance. Several models can be opened simultaniously within one session. Different models are always independent, threads are allowed to be running on different models simultaniously.

Property entity

Size: 64 bit / 8 byte (value)