+ if (get_work_area()->get_updating())
+ {
+ get_work_area()->stop_updating(true); // stop and mark as cancelled
+
+ // give the workarea chances to stop updating
+ Glib::signal_timeout().connect(sigc::mem_fun(*this, &CanvasView::close_instance_when_safe) ,250);
+ return false;
+ }
+
+ close_instance_when_safe();