#include <QApplication>
#include <QGuiApplication>

#include <QSpinBox>



int main(int argc, char *argv[])
{ // non-integer device-pixel ratio causes problems
  QGuiApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::PassThrough); // bad
  //QGuiApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::Floor); // bad
  //QGuiApplication::setHighDpiScaleFactorRoundingPolicy(Qt::HighDpiScaleFactorRoundingPolicy::Ceil); // bad

  // application
  QApplication app(argc,argv);

  // arrow up/down incorrect size
  QSpinBox spinbox;
  spinbox.show();

  return QApplication::exec();
}