[Qt][Qt窗口][上]详细讲解

// 创建菜单项 QAction* act1 = new QAction("open"); QAction* act2 = new QAction("close"); QAction* act3 = new QAction("create"); // 将菜单项添加到菜单上 menu1->addAction(act1); menu1->addAction(act2); menu1->addAction(act3); // 可以通过connect给action添加信号槽，以实现功能 connect(action1, &QAction::triggered, this, &MainWindow::handle); connect(action5, &QAction::triggered, this, &MainWindow::close);