add: added connect between auth and Widget

main.cpp

@@ -8,6 +8,8 @@ main (int argc, char *argv[])
 {
   QApplication app (argc, argv);
   auth a;
-  a.show ();
+  Widget w;
+  QObject::connect(&a, &auth::dbOpenned, &w, &Widget::init);
+  a.show();
   return app.exec ();
 }