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：