PyQt5 - 如何设置进度条的最小值？

在本文中，我们将看到如何设置进度条的最小值。默认情况下，进度条的最小值为 0，但我们可以根据需要更改它。为了做到这一点，我们将使用setMinimum方法，这将改变进度条的最大值。

如果我们改变最小值，百分比会相应改变

percentage = ((value_passed - minimum_value)/(maximum_value - minimum_value))*100

这里 maximum_value = 100，value_passed 和 minimum_value 由用户设置。

Syntax : bar.setMinimum(minimum_value)

Argument : It takes integer as argument.

Action performed : It will set the minimum value of progress bar.

代码 ：

# 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, 150, 200, 30)
  
        # setting minimum value of progress bar to 50
        bar.setMinimum(50)
  
        # setting value to progress bar
        bar.setValue(90)
  
        # setting alignment to centre
        bar.setAlignment(Qt.AlignCenter)
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：