注意：本程序在Python3.3+PyQt5测试通过

'''  Created on 2013-7-2  @author: badboy  Email:lucky.haiyu@gmail.com  QQ:43831266  '''  from PyQt5.QtCore import *  from PyQt5.QtGui import *  from PyQt5.QtWidgets import *      class clockForm(QWidget):      def __init__(self,parent=None):          super(clockForm,self).__init__(parent)          self.setWindowTitle("Clock")          self.timer=QTimer()          #设置窗口计时器          self.timer.timeout.connect(self.update)          self.timer.start(1000)                  def paintEvent(self,event):          painter=QPainter(self)          painter.setRenderHint(QPainter.Antialiasing)                      #设置表盘中的文字字体          font=QFont("Times",6)          fm=QFontMetrics(font)          fontRect=fm.boundingRect("99")#获取绘制字体的矩形范围                      #分针坐标点          minPoints=[QPointF(50,25),                     QPointF(48,50),                     QPointF(52,50)]                      #时钟坐标点          hourPoints=[QPointF(50,35),                     QPointF(48,50),                     QPointF(52,50)]                      side=min(self.width(),self.height())          painter.setViewport((self.width()-side)/2,(self.height()-side)/2,                              side,side)#始终处于窗口中心位置显示                                  #设置QPainter的坐标系统，无论窗体大小如何变化，          #窗体左上坐标为(0,0),右下坐标为(100,100),          #因此窗体中心坐标为(50,50)          painter.setWindow(0,0,100,100)                      #绘制表盘，使用环形渐变色          niceBlue=QColor(150,150,200)          haloGrident=QRadialGradient(50,50,50,50,50)          haloGrident.setColorAt(0.0,Qt.lightGray)          haloGrident.setColorAt(0.5,Qt.darkGray)          haloGrident.setColorAt(0.9,Qt.white)          haloGrident.setColorAt(1.0,niceBlue)          painter.setBrush(haloGrident)          painter.setPen(QPen(Qt.darkGray,1))          painter.drawEllipse(0,0,100,100)                                  transform=QTransform()                      #绘制时钟为0的字，以及刻度          painter.setPen(QPen(Qt.black,1.5))          fontRect.moveCenter(QPoint(50,10+fontRect.height()/2))          painter.setFont(font)          painter.drawLine(50,2,50,8)#          painter.drawText(QRectF(fontRect),Qt.AlignHCenter|Qt.AlignTop,"0")                      for i in range(1,12):              transform.translate(50, 50)              transform.rotate(30)              transform.translate(-50,-50)              painter.setWorldTransform(transform)              painter.drawLine(50,2,50,8)              painter.drawText(QRectF(fontRect),Qt.AlignHCenter|Qt.AlignTop,"%d" % i)                      transform.reset()                      #绘制分钟刻度线          painter.setPen(QPen(Qt.blue,1))          for i in range(1,60):              transform.translate(50,50)              transform.rotate(6)              transform.translate(-50,-50)              if i%5!=0:                  painter.setWorldTransform(transform)                  painter.drawLine(50,2,50,5)                                                  transform.reset()                      #获取当前时间          currentTime=QTime().currentTime()          hour=currentTime.hour() if currentTime.hour()<12 else currentTime.hour()-12          minite=currentTime.minute()          second=currentTime.second()                      #获取所需旋转角度          hour_angle=hour*30.0+(minite/60.0)*30.0          minite_angle=(minite/60.0)*360.0          second_angle=second*6.0                      #时针          transform.translate(50,50)          transform.rotate(hour_angle)          transform.translate(-50,-50)          painter.setWorldTransform(transform)          painter.setPen(Qt.NoPen)          painter.setBrush(QBrush(Qt.darkRed))          painter.drawPolygon(QPolygonF(hourPoints))                      transform.reset()                      #分针          transform.translate(50,50)          transform.rotate(minite_angle)          transform.translate(-50,-50)          painter.setWorldTransform(transform)          painter.setBrush(QBrush(Qt.darkGreen))          painter.drawPolygon(QPolygonF(minPoints))                      transform.reset()          #秒针          transform.translate(50,50)          transform.rotate(second_angle)          transform.translate(-50,-50)          painter.setWorldTransform(transform)          painter.setPen(QPen(Qt.darkCyan,1))          painter.drawLine(50,50,50,20)        if __name__=="__main__":      import sys      app=QApplication(sys.argv)      form=clockForm()      form.show()      app.exec_()