engiGetAttrOptional

This call can be used to check if an attribute is optional

Syntax

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

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

Property attribute

Size: 64 bit / 8 byte (reference)
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