python pyqt5 按钮 QRadioButton 常用

setCheckable() isChecked()

image.png

单选按钮

-- coding: utf-8 --

'''
【简介】
PyQt5中QRadio例子

'''

import sys
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *

class Radiodemo(QWidget):
def init(self, parent=None):
super(Radiodemo, self).init(parent)
layout = QHBoxLayout()
self.btn1 = QRadioButton("Button1")
self.btn1.setChecked(True)
self.btn1.toggled.connect(lambda: self.btnstate(self.btn1))
layout.addWidget(self.btn1)

    self.btn2 = QRadioButton("Button2")
    self.btn2.toggled.connect(lambda: self.btnstate(self.btn2))
    layout.addWidget(self.btn2)
    self.setLayout(layout)
    self.setWindowTitle("RadioButton demo")

def btnstate(self, btn):
    if btn.text() == "Button1":
        if btn.isChecked() == True:
            print(btn.text() + " is selected")
        else:
            print(btn.text() + " is deselected")

    if btn.text() == "Button2":
        if btn.isChecked() == True:
            print(btn.text() + " is selected")
        else:
            print(btn.text() + " is deselected")

if name == 'main':
app = QApplication(sys.argv)
radioDemo = Radiodemo()
radioDemo.show()
sys.exit(app.exec_())