PyQt5 – 如何更改文本进度条的样式和大小？

在本文中，我们将了解如何更改进度条内数据的字体样式和大小。我们可以使用setFormat方法设置进度条中的文本。为了改变字体和大小，我们将使用以 QFont 对象为参数的setFont方法，字体和大小将被改变。

Syntax : bar.setFont(QFont(font_name, size))

Argument : It takes QFont object as argument.

Action performed : This will change the font and size of the text.

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 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
        bar1 = QProgressBar(self)
  
        # setting geometry to progress bar
        bar1.setGeometry(200, 100, 200, 30)
  
        # setting the value
        bar1.setValue(70)
  
        # setting alignment to center
        bar1.setAlignment(Qt.AlignCenter)
  
        # setting font and the size
        bar1.setFont(QFont('Arial', 15))
  
        # creating progress bar
        bar2 = QProgressBar(self)
  
        # setting geometry to progress bar
        bar2.setGeometry(200, 200, 200, 30)
  
        # setting the value
        bar2.setValue(20)
  
        # adding text using setFormat
        bar2.setFormat("Hello Geeks")
  
        # setting alignment to center
        bar2.setAlignment(Qt.AlignCenter)
  
        # setting font and the size
        bar2.setFont(QFont('Times', 7))
  
  
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：