set QApplication default font using qss

Hi,

I am trying to set QApplication default font using following qss, but it doesn't work. How can I do that? Thanks

Code:

---

QApplication {
  font-family: Arial;
  font-size: 12px;
  font-weight: Normal;
}

---

Try this :

Code:

---

* {
  font-family: Arial;
  font-size: 12px;
  font-weight: Normal;
}

---