CvSetElemFlags Property OpenCvSharp Class Library
it is true if the node is free and false otherwise

Namespace:  OpenCvSharp
Assembly:  OpenCvSharp (in OpenCvSharp.dll) Version: 1.0.0.0 (1.0.0.0)
Syntax

public bool Flags { get; }

Property Value

Type: Boolean
See Also

Reference