PyQt5基础 QRadioButton 信号clicked与toggled的区别UI界面文件结构代码

Python : 3.8.13

OS : Windows 21H1

Conda : 4.12.0

PyCharm : 2022.1 (Community Edition)

UI界面

文件结构

C:\Users\admin\PycharmProjects\pythonProject1>tree /F
文件夹 PATH 列表
卷序列号为 B0D5-61C1
C:.
│  demo.py
│  main.py
│  untitled.py
│  untitled.ui
│
├─.idea
│  │  .gitignore
│  │  misc.xml
│  │  modules.xml
│  │  pythonProject1.iml
│  │  workspace.xml
│  │
│  └─inspectionProfiles
│          profiles_settings.xml
│
└─__pycache__
        untitled.cpython-38.pyc

代码

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'untitled.ui'
#
# Created by: PyQt5 UI code generator 5.15.4
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again.  Do not edit this file unless you know what you are doing.


from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(363, 285)
        MainWindow.setToolTip("")
        MainWindow.setWhatsThis("")
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.groupBox = QtWidgets.QGroupBox(self.centralwidget)
        self.groupBox.setGeometry(QtCore.QRect(70, 80, 120, 80))
        self.groupBox.setObjectName("groupBox")
        self.radioButton = QtWidgets.QRadioButton(self.groupBox)
        self.radioButton.setGeometry(QtCore.QRect(10, 50, 89, 16))
        self.radioButton.setObjectName("radioButton")
        self.radioButton_2 = QtWidgets.QRadioButton(self.groupBox)
        self.radioButton_2.setGeometry(QtCore.QRect(10, 30, 89, 16))
        self.radioButton_2.setObjectName("radioButton_2")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 363, 23))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.groupBox.setTitle(_translate("MainWindow", "GroupBox1"))
        self.radioButton.setText(_translate("MainWindow", "no"))
        self.radioButton_2.setText(_translate("MainWindow", "yes"))

import sys
from PyQt5.QtWidgets import QApplication, QMainWindow

import untitled


def show_checked_rb_toggled(radioButton):
    print("toggled", radioButton.text())


def show_checked_rb_clicked(radioButton):
    print("clicked", radioButton.text())


if __name__ == '__main__':
    app = QApplication(sys.argv)

    window = QMainWindow()

    ui = untitled.Ui_MainWindow()
    ui.setupUi(window)

    # clicked是被选中的信号
    # toggled是radioButton的状态发生变化时的信号
    # 点击顺序是 yes - yes - yes - no - no - no
    # 注意观察输出结果，来体会clicked与toggled的区别
    ui.radioButton.clicked.connect(lambda:
                                   show_checked_rb_clicked(ui.radioButton))
    ui.radioButton_2.clicked.connect(lambda:
                                     show_checked_rb_clicked(ui.radioButton_2))

    ui.radioButton.toggled.connect(lambda:
                                   show_checked_rb_toggled(ui.radioButton))
    ui.radioButton_2.toggled.connect(lambda:
                                     show_checked_rb_toggled(ui.radioButton_2))

    window.show()

    sys.exit(app.exec_())

效果

D:\Develop\Anaconda3\envs\pyqtenv\python.exe C:/Users/admin/PycharmProjects/pythonProject1/main.py
toggled yes
clicked yes
clicked yes
clicked yes
toggled yes
toggled no
clicked no
clicked no
clicked no

Process finished with exit code 0

学习资料

Qt中radio button的信号

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