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
