PyQt5 – 多色边框进度条

在这篇文章中，我们将看到如何为进度条创建多色边框。下面是普通边框进度条和多色边框进度条的对比。

为了达到这个目的，我们必须在CSS样式表中改变每个边框的颜色，下面是边框样式表的代码。

QProgressBar
{
border :5px solid ;
border-top-color : red; 
border-left-color :pink;
border-right-color :yellow;
border-bottom-color : blue;
}

这个样式表与setStyleSheet方法一起使用，下面是实现。

# 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 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
        bar.setValue(70)
  
        # setting alignment to center
        bar.setAlignment(Qt.AlignCenter)
  
        # setting border size
        # and border color to each side
        bar.setStyleSheet("QProgressBar"
                          "{"
                          "border :5px solid ;"
                          "border-top-color : red; "
                          "border-left-color :pink;"
                          "border-right-color :yellow;"
                          "border-bottom-color : blue;"
                          "}"
                          )
  
  
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 :