PyQt5--QSlide

 # -*- coding:utf-8 -*-

 '''

 Created on Sep 20, 2018

 @author: SaShuangYiBing

 Comment:

 '''

 import sys

 from PyQt5.QtCore import Qt

 from PyQt5.QtGui import QPixmap

 from PyQt5.QtWidgets import QApplication,QWidget,QSlider,QLabel

 class New_test(QWidget):

     def __init__(self):

         super().__init__()

         self.initUI()

     def initUI(self):

         sld = QSlider(Qt.Horizontal,self)

         sld.setFocusPolicy(Qt.NoFocus)

         sld.setGeometry(30,55,100,30)

         sld.valueChanged.connect(self.changeValue)

         self.label = QLabel(self)

         self.label.setPixmap(QPixmap('mute.ico'))

         self.label.setGeometry(160,40,80,60)

         self.setGeometry(300,300,280,170)

         self.setWindowTitle('QSlider')

         self.show()

     def changeValue(self,value):

         if value == 0:

             self.label.setPixmap(QPixmap('mute.ico'))

         elif value > 0 and value <= 30:

             self.label.setPixmap(QPixmap('min.ico'))

         elif value > 30 and value < 80:

             self.label.setPixmap(QPixmap('mid.ico'))

         else:

             self.label.setPixmap(QPixmap('max.ico'))

 if __name__ == '__main__':

     app = QApplication(sys.argv)

     ex  = New_test()

     sys.exit(app.exec_())
         

启动时

调节音量为小：

调节音量为中：

调节音量为大：