Qt給QMainWindow窗口添加菜單欄菜單和快捷鍵

添加QMainWindow自帶的標准菜單欄和菜單

• 常用標准菜單代碼:

    //添加菜單欄
    QMenuBar *menuBar;
    menuBar = new QMenuBar(this);
    this->setMenuBar(menuBar);

    //給菜單欄添加標准文件菜單
    QMenu *menuFile;
    menuFile = new QMenu(menuBar);
    menuBar->addAction(menuFile->menuAction());
    //設置文本和快捷鍵, 通常導航欄中&F指Alt+F, 菜單中&O指Ctrl+O
    menuFile->setTitle(tr("File(&F)"));

    //給文件菜單添加子菜單
    QAction *actionOpen;
    actionOpen = new QAction(this);
    actionOpen->setStatusTip(tr("Open an existing file"));      //設置狀態欄提示, 鼠標懸浮時狀態欄會提示對應信息
    connect(actionOpen, &QAction::triggered, this, &MainWindow::open);      //關聯槽函數

    QAction *actionSave;
    actionSave = new QAction(this);
    menuFile->addAction(actionOpen);
    menuFile->addSeparator();//給菜單加分隔條
    menuFile->addAction(actionSave);

    //給Open和Save菜單設置文本和快捷鍵
    actionOpen->setText(tr("Open(&O)"));
    actionSave->setText(tr("Save(&S)"));

• 效果如圖
  

• 一些常用的菜單, 可以引用Qt中的標准菜單, 代碼如下:

openAction　=　new　QAction(tr("&Open"),　this);
//設置快捷鍵為Qt標准快捷鍵: Qt標准快捷鍵可查Qt助手QKeySequence, Qt標准快捷鍵具有跨平台的特點.
openAction->setShortcut(QKeySequence::Open);