大家好，以下代码:self.painter=QtGui.QPainter(self)self.painter.setRenderHint(QPainter.Antialiasing)self.painter.translate(482,395)self.painter.scale(300,300)self.painter.save()needle=Qt.QPolygon([QPoint(30,0),QPoint(-30,0),QPoint(0,200)])self.painter.setBrush(Qt.cyan)self.painter.setPen(Qt.black)self.pa