您可以通过painter.translate()将旋转中心(始终是左上角)移动到小部件的任意点，在旋转中心绘制左上角的矩形，计算所需旋转中心的x和y偏移量并再次移动对象，然后旋转下一个对象的坐标系。这里是pyqt5中的一个工作示例，将qtwidges替换为pyqt4的QtGui：import sys

import math

from PyQt5 import QtCore, QtGui, QtWidgets

class MeinWidget(QtWidgets.QWidget):

def __init__(self, parent=None):

QtWidgets.QWidget.__init__(self, parent)

self.setGeometry(200,50,300,300)

self.pen1 = QtGui.QPen(QtGui.QColor(0,0,0))

self.pen2 = QtGui.QPen(QtGui.QColor(255,0,0))

self.pen3 = QtGui.QPen(QtGui.QColor(0,255,0))

self.pen4 = QtGui.QPen(QtGui.QColor(0,0,255))

self.brush = QtGui.QBrush(QtGui.QColor(255,255,255))

self.pens = (self.pen1, self.pen2, self.pen3, self.pen4)

self.rw = 100

self.rh = 50

def paintEvent(self, event):

painter = QtGui.QPainter(self)

painter.translate(QtCore.QPointF(self.rw,self.rh)) # move rotation center to an arbitrary point of widget

angle = 10

for i in range(0,len(self.pens)):

dy = self.rh - self.rh*math.cos(math.radians(angle)) # vertical offset of bottom left corner

dx = self.rh*math.sin(math.radians(angle)) # horizontal offset of bottom left corner

p = self.pens[i]

p.setWidth(3)

painter.setPen(p)

painter.drawRect(0,0,self.rw,self.rh)

painter.translate(QtCore.QPointF(dx,dy)) # move the wanted rotation center to old position

painter.rotate(angle)

angle += 10

app = QtWidgets.QApplication(sys.argv)

widget = MeinWidget()

widget.show()

sys.exit(app.exec_())

看起来像这样：