func: static void vnc_dpy_copy(DisplayState *ds, int src_x, int src_y, int dst_x, int dst_y, int w, int h)
  
  {
  
      VncDisplay *vd = ds->opaque;
  
      VncState *vs = vd->clients;
  
      while (vs != NULL) {
  
          if (vnc_has_feature(vs, VNC_FEATURE_COPYRECT))
  
              vnc_copy(vs, src_x, src_y, dst_x, dst_y, w, h);
  
          else /* TODO */
  
              vnc_update(vs, dst_x, dst_y, w, h);
  
          vs = vs->next;
  
      }
  
  }
  