CRhinoDoc* pDoc = context.Document();
  if (nullptr == pDoc)
    return CRhinoCommand::failure;
  CRhinoDoc& doc = *pDoc;
 
  // Id of the currently active render plug-in
  const UUID renderPlugInId = RhinoApp().CurrentRenderPlugIn()->PlugInID();
 
  // Create a material with a texture bitmap
  ON_Texture tex;
  tex.m_image_file_reference.SetFullPath(L"C:/my-texture-folder/sample-texture.bmp", true);
  tex.m_bOn = true;
  tex.m_type = ON_Texture::TYPE::bitmap_texture;
  tex.m_mode = ON_Texture::MODE::modulate_texture;
  tex.m_mapping_channel_id = 1;
 
  ON_Material mat;
  mat.m_diffuse.SetRGB(150, 0, 0);
  mat.m_specular.SetRGB(200, 200, 200);
  mat.m_shine = 0.5 * ON_Material::MaxShine;
  mat.AddTexture(tex);
 
  int mat_index = doc.m_material_table.AddMaterial(mat);
  if (mat_index < 0)
    return CRhinoCommand::failure;
 
  // Select a mesh to modify
  CRhinoGetObject go;
  go.SetGeometryFilter(ON::mesh_object);
  go.SetCommandPrompt(L"Select a mesh");
  go.GetObjects(1, 1);
  if (CRhinoCommand::success != go.CommandResult())
    return go.CommandResult();
  const CRhinoMeshObject* mesh0_object =
    CRhinoMeshObject::Cast(go.Object(0).Object());
  if (0 == mesh0_object)
    return CRhinoCommand::failure;
  const ON_Mesh* mesh0 = mesh0_object->Mesh();
  if (0 == mesh0)
    return CRhinoCommand::failure;
 
  // Copy the mesh
  ON_Mesh* mesh1 = new ON_Mesh(*mesh0);
  ON_BoundingBox bbox = mesh1->BoundingBox();
  ON_Interval x_extents(bbox.m_min.x, bbox.m_max.x);
  ON_Interval y_extents(bbox.m_min.y, bbox.m_max.y);
 
  // Set up surface parameters.
  // They will be used by a surface parameter mapping.
  const int vertex_count = mesh1->m_V.Count();
  mesh1->m_S.Reserve(vertex_count);
  mesh1->m_S.SetCount(0);
  for (int vi = 0; vi < vertex_count; vi++)
  {
    const ON_3dPoint& V = mesh0->m_V[vi];
    ON_2dPoint& tc = mesh1->m_S.AppendNew();
    tc.x = (float)x_extents.NormalizedParameterAt(V.x);
    tc.y = (float)y_extents.NormalizedParameterAt(V.y);
  }
 
  // Adjust surface packing settings so that surface parameter
  // mapping will create vertex coordinates 1-to-1 with the
  // surface parameters.
  mesh1->m_srf_domain[0].Set(0.0, 1.0);
  mesh1->m_srf_domain[1].Set(0.0, 1.0);
  mesh1->m_srf_scale[0] = 0.0;
  mesh1->m_srf_scale[1] = 0.0;
  mesh1->m_packed_tex_domain[0].Set(0.0, 1.0);
  mesh1->m_packed_tex_domain[1].Set(0.0, 1.0);
  mesh1->m_packed_tex_rotate = false;
 
  // Update the mesh
  CRhinoMeshObject* mesh1_object = new CRhinoMeshObject();
  mesh1_object->SetMesh(mesh1);
  doc.ReplaceObject(CRhinoObjRef(mesh0_object), mesh1_object);
 
  // Make a copy of the object attributes in order to apply some changes
  ON_3dmObjectAttributes att = mesh1_object->Attributes();
 
  // Update the object to use the new material
  att.m_material_index = mat_index;
  att.SetMaterialSource(ON::material_from_object);
 
  // Add new texture mapping to the document texture mapping table
  const int textureMappingIndex = doc.m_texture_mapping_table.AddTextureMapping(ON_TextureMapping::SurfaceParameterTextureMapping);
  // Look up the mapping id of the newly added texture mapping
  const UUID textureMappingId = doc.m_texture_mapping_table[textureMappingIndex].Id();
  // Remove all texture mappings from the object attributes
  att.m_rendering_attributes.m_mappings.Destroy();
  // Add the newly added texture mapping on the mapping channel that the texture uses
  att.m_rendering_attributes.AddMappingChannel(renderPlugInId, tex.m_mapping_channel_id, textureMappingId);
 
  // Apply the modified attributes to the mesh object
  doc.ModifyObjectAttributes(CRhinoObjRef(mesh1_object), att);
 
  doc.Redraw();