如何缩放实体到视区？

• 回答：

          private void ZoomViewForEntity()
          {
              MxDrawUtility mxUtility = new MxDrawUtility();
  
              MxDrawPoint getPt;
              MxDrawEntity ent = mxUtility.GetEntity(out getPt, "选择实体:");
              if (ent == null)
                  return;
  
              MxDrawPoint pt1Ob, pt2Ob;
              ent.GetBoundingBox(out pt1Ob,out pt2Ob);
              ent.Close();
  
              MxDrawPoint pt1 = (MxDrawPoint)pt1Ob;
              MxDrawPoint pt2 = (MxDrawPoint)pt2Ob;
  
              if(pt1 != null && pt2 != null)
              {
                  MxDrawApplication app = new MxDrawApplication();
                  app.ZoomWindow(pt1.x,pt1.y, pt2.x,pt2.y);
              }
  
          }