This function returns if an instance has geometry derived and if this
geometry is still up-to-date. It could return false if geometry has never been updated
or in case a property has been updated, or a (recursively) related instance has an updated property since
last calculation of geometry.
Syntax
public const string enginedll = @"engine.dll";
[DllImport(enginedll, EntryPoint = "IsUpToDate")]
public static extern byte IsUpToDate(Int64 owlInstance);
Property owlInstance
Size: 64 bit / 8 byte (value)
The handle to the specific instance in the design tree. The instance handle is static within one open model but is most probably different when the same instance is opened in another model. The instance is always exactly of one unique class.