+ connect(loader, &Loader::got_mesh,
+ canvas, &Canvas::load_mesh);
+
+ connect(loader, &Loader::finished,
+ loader, &Loader::deleteLater);
+ connect(loader, &Loader::finished,
+ [=](){ open_action->setEnabled(true); });
+ connect(loader, &Loader::finished,
+ [=](){ canvas->set_status(""); });
+
+ connect(loader, &Loader::loaded_file,
+ this, &Window::setWindowTitle);