#include <QApplication>
#include <QDialog>
#include <QLabel>
#include <QVBoxLayout>

int main(int argc, char *argv[])
{
    QApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
    QApplication::setAttribute(Qt::AA_UseHighDpiPixmaps);
    QApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::PassThrough);

    QApplication a(argc, argv);

    QDialog* dlg = new QDialog();
    dlg->setFixedSize(400, 197);
    QVBoxLayout* mainLayout = new QVBoxLayout(dlg);

    QLabel* content = new QLabel(dlg);
    content->setWordWrap(true);
    content->setText("test test test test test test test test test test test test test test test test test test test test");

    mainLayout->addWidget(content);

    dlg->show();

    return a.exec();
}