code_app/app/scanner/main.cpp

#include "mainwindow.h"

#include <QApplication>
#include <QTranslator>
#include <QScreen>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);

//    QTranslator translator_qt_;
//    if (translator_qt_.load(":translation/qt_zh_CN.qm"))
//        a.installTranslator(&translator_qt_);

//    QTranslator translator_qt;
//    if (translator_qt.load(":translation/Scanner_zh_EN.qm"))
//        a.installTranslator(&translator_qt);

    std::string appLanguage;

    for (int i = 1; i < argc; i++)
    {
        char* z = argv[i];

        if (z == strstr(z, "-language="))
            appLanguage = z + strlen("-language=");
    }

//    if ("English" == appLanguage && !appLanguage.empty())

    MainWindow w;
    QScreen *screen = QGuiApplication::primaryScreen();
    w.move((screen->size().width() - w.width()) / 2, (screen->size().height() - w.height()) / 2);
    w.show();
    return a.exec();
}