Qt Application Menu In Window and Mac

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Application Menu

Application menu in different operator systems has different designed style. like Windows and Mac os, they are different.In the code, we can use different Macro ,eg:Q_OS_MAC and Q_OS_WIN

#ifdef Q_OS_MACvoid MainWindow::InitMenu(){    QMenuBar* mBar = menuBar();    QMenu* mApp   = new QMenu(tr("App"),this);    QMenu* mFile  = new QMenu(tr("&File"),this);    mBar->addMenu(mApp);    mBar->addMenu(mFile);    /** In Mac,We should to set action role */    QAction* actAbout = new QAction(tr("&About"),this);    actAbout->setMenuRole(QAction::AboutRole);    QAction* actSetApp = new QAction(tr("&Preference..."),this);    actSetApp->setMenuRole(QAction::PreferencesRole);    mApp->addAction(actAbout);    mApp->addAction(actSetApp);    QAction* actOpen = new QAction(tr("&Open Video Files..."),this);    mFile->addAction(actOpen);    connect(actOpen,&QAction::triggered,_player,&Player::StOpen);    connect(actSetApp,&QAction::triggered,this,&MainWindow::StShowSetDlg);}#elsevoid MainWindow::InitMenu(){    QMenuBar* mBar = menuBar();    QMenu* mFile  = new QMenu(tr("&File"),this);    QMenu* mSet   = new QMenu(tr("&Setting"),this);    QMenu* mAbout = new QMenu(tr("&About"),this);    QAction* actOpen = new QAction(tr("&Open Video Files..."),this);    QAction* actExit = new QAction(tr("&Exit out"),this);    mFile->addAction(actOpen);    mFile->addSeparator();    mFile->addAction(actExit);    QAction* actSetApp = new QAction(tr("&Setting App..."),this);    mSet->addAction(actSetApp);    mBar->addMenu(mFile);    mBar->addMenu(mSet);    mBar->addMenu(mAbout);    connect(actOpen,&QAction::triggered,_player,&Player::StOpen);    connect(actExit,&QAction::triggered,this,[=](){close();});    connect(actSetApp,&QAction::triggered,this,&MainWindow::StShowSetDlg);}#endif

Qt Application Menu In Window and Mac