To be able to display NStrokeStyleTypeEditor when an object which has property of type NStrokeStyle is put in a PropertyGrid you need to set Editor attribute to this property which specifies the editor.
Here is an example class.
public class Test
public NStrokeStyle StrokeStyle
m_StrokeStyle = value;
private NStrokeStyle m_StrokeStyle;
I hope this helps.
Nevron Support Team