PyQt5 - 进度条中的背景图片

在本文中，我们将看到如何为进度条设置背景图像。默认情况下，进度条没有设置背景图像，下面是普通进度条与带有背景图像的进度条的样子。

为此，我们必须使用 CSS 样式表，下面是样式表的代码。

QProgressBar
{
 background-image : url(image.png);
 border : 1px solid white;
}

此样式表与setStyleSheet方法一起使用，下面是代码的实现。

# importing libraries
from PyQt5.QtWidgets import * 
from PyQt5 import QtCore, QtGui
from PyQt5.QtGui import * 
from PyQt5.QtCore import * 
import sys
  
  
class Window(QMainWindow):
  
    def __init__(self):
        super().__init__()
  
        # setting title
        self.setWindowTitle("Python ")
  
        # setting geometry
        self.setGeometry(100, 100, 600, 400)
  
        # calling method
        self.UiComponents()
  
        # showing all the widgets
        self.show()
  
    # method for widgets
    def UiComponents(self):
        # creating progress bar
        bar = QProgressBar(self)
  
        # setting geometry to progress bar
        bar.setGeometry(200, 100, 200, 30)
  
        # setting the value
        bar.setValue(30)
  
        # setting alignment to center
        bar.setAlignment(Qt.AlignCenter)
  
        # setting background
        bar.setStyleSheet(
                          "QProgressBar"
                          "{"
                          "background-image: url(image.png);"
                          " border: 1px solid white;"
                          "} "
                          )
  
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：