PyQt5 – 为进度条添加边框

在本文中，我们将了解如何为进度条添加边框。进度条基本上有两个部分，一个是背景，另一个是根据百分比改变大小的栏。下面是正常进度条与进度条边框的表示。

为了给 bar 添加边框，我们必须更改 CSS 样式表并将其与 setStyleSheet 方法一起使用，下面是样式表代码

QProgressBar
{
border : 1px solid black;
}
QProgressBar
{
border : 3px solid red;
}

下面是实现。

Python3

# 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 background color to window
        # self.setStyleSheet("background-color : yellow")
 
        # 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
        value = 70
        bar.setValue(value)
 
        # setting alignment to center
        bar.setAlignment(Qt.AlignCenter)
 
        # setting border to progress bar
        # and setting border to the bar and color
        bar.setStyleSheet("QProgressBar "
                          "{"
                          "border : 1px solid black;"
                          "}"
                          "QProgressBar::chunk"
                          "{"
                          "background-color : yellow;"
                          "border :3px solid red;"
                          "}"
                          )
 
 
App = QApplication(sys.argv)
 
# create the instance of our Window
window = Window()
 
# start the app
sys.exit(App.exec())

输出 ：