pyqt5 信号与槽的连接_pyqt自定义信号和槽?

1.title的设置：
点击对象中的MainWindow，然后更改属性windowTitle的值（同样windowIcon设置图标，预览显示）：

点击进入信号编辑模式：

鼠标左键按住按钮控件，向下拖动：


得到下面的绑定结果，ctrL+R预览即可。

更复杂的单选框与输入的绑定

然后ui转为py文件，发现多了以下部分：

        self.retranslateUi(MainWindow)
        self.pushButton_3.clicked.connect(MainWindow.close) # type: ignore
        QtCore.QmetaObject.connectSlotsByName(MainWindow)

实际上可以自己进行函数的设置：

        self.retranslateUi(MainWindow)
        # self.pushButton.clicked.connect(MainWindow.close) #绑定内置的关闭槽函数
        self.pushButton.clicked.connect(self.showMessage) # 绑定自定义槽函数
        QtCore.QmetaObject.connectSlotsByName(MainWindow)

其中函数为：

    def showMessage(self):
        from PyQt5.QtWidgets import QMessageBox  # 导入QMessageBox类
        # 使用information()方法弹出信息提示框
        QMessageBox.information(MainWindow,"提示框","欢迎进入PyQt5编程世界",QMessageBox.Yes | QMessageBox.No,QMessageBox.Yes)

最终代码：

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

# Form implementation generated from reading ui file 'test.ui'
#
# Created by: PyQt5 UI code generator 5.15.6
#
# 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(1058, 663)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.checkBox = QtWidgets.QCheckBox(self.centralwidget)
        self.checkBox.setGeometry(QtCore.QRect(260, 210, 91, 19))
        self.checkBox.setObjectName("checkBox")
        self.checkBox_2 = QtWidgets.QCheckBox(self.centralwidget)
        self.checkBox_2.setGeometry(QtCore.QRect(400, 210, 91, 19))
        self.checkBox_2.setObjectName("checkBox_2")
        self.checkBox_3 = QtWidgets.QCheckBox(self.centralwidget)
        self.checkBox_3.setGeometry(QtCore.QRect(520, 210, 91, 19))
        self.checkBox_3.setObjectName("checkBox_3")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(20, 10, 93, 28))
        self.pushButton.setObjectName("pushButton")
        self.pushButton_2 = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton_2.setGeometry(QtCore.QRect(20, 70, 93, 28))
        self.pushButton_2.setObjectName("pushButton_2")
        self.pushButton_3 = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton_3.setGeometry(QtCore.QRect(390, 330, 93, 28))
        self.pushButton_3.setObjectName("pushButton_3")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 1058, 26))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)


        self.retranslateUi(MainWindow)
        # self.pushButton.clicked.connect(MainWindow.close) #绑定内置的关闭槽函数
        self.pushButton.clicked.connect(self.showMessage)  # 绑定自定义槽函数
        QtCore.QmetaObject.connectSlotsByName(MainWindow)



    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.checkBox.setText(_translate("MainWindow", "CheckBox"))
        self.checkBox_2.setText(_translate("MainWindow", "CheckBox"))
        self.checkBox_3.setText(_translate("MainWindow", "CheckBox"))
        self.pushButton.setText(_translate("MainWindow", "PushButton"))
        self.pushButton_2.setText(_translate("MainWindow", "PushButton"))
        self.pushButton_3.setText(_translate("MainWindow", "PushButton"))
    def showMessage(self):
        from PyQt5.QtWidgets import QMessageBox  # 导入QMessageBox类
        # 使用information()方法弹出信息提示框
        QMessageBox.information(MainWindow, "提示框", "欢迎进入PyQt5编程世界", QMessageBox.Yes | QMessageBox.No, QMessageBox.Yes)


import sys
if __name__ == '__main__':
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

github上的工程