如何选择实体并修改颜色？

• 回答：

                  MxDrawSelectionSet ss = new MxDrawSelectionSet();
                  ss.Select(MCAD_McSelect.mcSelectionSetUserSelect, null, null, null);
                  for(int i = 0; i < ss.Count;i++)
                  {
                      MxDrawEntity ent = ss.Item(i);
                      if(ent != null)
                      {
                          ent.colorIndex = MCAD_COLOR.mcRed;
                      }
                  }