PyQt5 - 单选按钮的管状指示器

在本文中，我们将看到如何制作单选按钮的管状指示器。默认情况下，单选按钮指示器是圆形的。
下面是普通单选按钮和指示器为管状的单选按钮的表示。

In order to do this we have to do the following :
1. Create a radio button. 
2. Set the border and make the radio button indicator to rectangle(height > width) in shape with the help of style sheet. 
3. Change the bottom border radius to sum of half of the width of indicator and border thickness

样式表代码来做到这一点——

QRadioButton::indicator
{
border : 1px solid black;
width : 12;
height : 25;
border-bottom-left-radius : 7;
border-bottom-right-radius : 7;
}

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 geometry
        self.setGeometry(100, 100, 600, 400)
 
        # calling method
        self.UiComponents()
 
        # showing all the widgets
        self.show()
 
    # method for widgets
    def UiComponents(self):
 
        # creating a radio button
        self.radio_button = QRadioButton(self)
 
        # setting geometry of radio button
        self.radio_button.setGeometry(200, 150, 120, 40)
 
        # setting text to radio button
        self.radio_button.setText("Radio Button")
 
        # changing style sheet code of radio button setting border to
        # indicator of thickness 1px and of black color and width and height
        # and the border radius equal to thickness of border + half of height
        self.radio_button.setStyleSheet("QRadioButton::indicator"
                                        "{"
                                        "border : 1px solid black;"
                                        "width : 12px;"
                                        "height : 25px;"
                                        "border-bottom-left-radius : 7px;"
                                        "border-bottom-right-radius : 7px;"
                                        "}")
 
 
# create pyqt5 app
App = QApplication(sys.argv)
 
# create the instance of our Window
window = Window()
 
# start the app
sys.exit(App.exec())

输出 ：