paint.py 文件源码

def paintEvent(self, event):
      qp = QPainter(self)

      qp.setPen(Qt.black)
      size = self.size()

      for i in range(1024):
          x = random.randint(1, size.width()-1)
          y = random.randint(1, size.height()-1)
          qp.drawPoint(x, y)