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：