addtext

          
using System;

partial class Examples
{
  public static Rhino.Commands.Result AddAnnotationText(Rhino.RhinoDoc doc)
  {
    Rhino.Geometry.Point3d pt = new Rhino.Geometry.Point3d(10, 0, 0);
    const string text = "Hello RhinoCommon";
    const double height = 2.0;
    const string font = "Arial";
    Rhino.Geometry.Plane plane = doc.Views.ActiveView.ActiveViewport.ConstructionPlane();
    plane.Origin = pt;
    Guid id = doc.Objects.AddText(text, plane, height, font, false, false);
    if( id != Guid.Empty )
    {
      doc.Views.Redraw();
      return Rhino.Commands.Result.Success;
    }
    return Rhino.Commands.Result.Failure;
  }
}