PyQt5 QSpinBox – 设置提示首选项

在本文中，我们将了解如何检查旋转框的文本是否为固定间距，等距字体，也称为固定间距、固定宽度或非比例字体，是一种字母和字符各自占据相同数量的水平空间。这与可变宽度字体形成对比，其中字母和间距具有不同的宽度。

为了获得关于字体的信息，我们必须获得旋转框的 QFontInfo 对象，这可以使用fontInfo方法来完成。

In order to do this we fixedPitch method with the QFontInfo object of the spin box

Syntax : font_info.fixedPitch()

Argument : It takes no argument

Return : It returns bool

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 spin box
        self.spin = QSpinBox(self)
  
        # setting geometry to spin box
        self.spin.setGeometry(100, 100, 250, 40)
  
        # setting range to the spin box
        self.spin.setRange(0, 999999)
  
        # setting prefix to spin
        self.spin.setPrefix("PREFIX ")
  
        # setting suffix to spin
        self.spin.setSuffix(" SUFFIX")
  
         
        # creating a label
        label = QLabel(self)
  
        # setting geometry to the label
        label.setGeometry(100, 200, 300, 60)
  
        # getting the font info
        font_info = self.spin.fontInfo()
  
        # getting fixed pitch status of text
        check = font_info.fixedPitch()
  
        # setting text to the label
        label.setText("Fixed Pitch ? : " + str(check))
  
  
# create pyqt5 app
App = QApplication(sys.argv)
  
# create the instance of our Window
window = Window()
  
# start the app
sys.exit(App.exec())

输出 ：