C++ (Qt)class Test : public QObject{Q_OBJECTpublic:Test();void calculate(){/* work hard*/emit calcDone();}signals:void calcDone();};
C++ (Qt)connect(TestObject, &Test:calcDone, this, &MainWindow::set_tw_check_file_insert_row);
C++ (Qt)void MainWindow::on_pushButton_clicked(){ Test t; t.calculate(); set_tw_check_file_insert_row();}