QTableWidget-right-click-menu.cpp

void MainWindow::deleteState(const QPoint &pos) {
  QMenu *menu = new QMenu(this);
  QAction *ciz = new QAction("&Delete State");
  connect(ciz, &QAction::triggered, this, &MainWindow::deleteStateItem);
  menu->addAction(ciz);
  menu->popup(ui->tableWidget->viewport()->mapToGlobal(pos));
  int row = ui->tableWidget->itemAt(pos)->row();
  m_currentState = ui->tableWidget->item(row, 0)->text().toInt();
}