Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);

    QString txt;
    QDebug(&txt)<<qApp->primaryScreen()->primaryOrientation();
    ui->plainTextEdit->setPlainText(txt);

    //Android
    //Qt 5.14.2 OK
    //Qt 5.15.1 BUG: always Qt::LandscapeOrientation
}