Python3.x+Pyqt5实现主窗体与子窗体相互传数据、传字符、传值；主要使用了信号与槽的方法

# -*- coding: utf-8 -*- # Form implementation generated from reading ui file 'mainfilejiemian.ui' # # Created by: PyQt5 UI code generator 5.6 # # WARNING! All changes made in this file will be lost! from PyQt5 import QtCore, QtGui, QtWidgets class Ui_W1(object): def setupUi(self, W1): W1.setObjectName("W1") W1.resize(463, 475) self.label = QtWidgets.QLabel(W1) self.label.setGeometry(QtCore.QRect(40, 130, 131, 41)) self.label.setObjectName("label") self.label_2 = QtWidgets.QLabel(W1) self.label_2.setGeometry(QtCore.QRect(30, 220, 131, 21)) self.label_2.setObjectName("label_2") self.lineEdit = QtWidgets.QLineEdit(W1) self.lineEdit.setGeometry(QtCore.QRect(180, 140, 171, 31)) self.lineEdit.setObjectName("lineEdit") self.lineEdit_2 = QtWidgets.QLineEdit(W1) self.lineEdit_2.setGeometry(QtCore.QRect(180, 220, 171, 31)) self.lineEdit_2.setObjectName("lineEdit_2") self.pushButton = QtWidgets.QPushButton(W1) self.pushButton.setGeometry(QtCore.QRect(50, 340, 111, 41)) self.pushButton.setObjectName("pushButton") self.pushButton_2 = QtWidgets.QPushButton(W1) self.pushButton_2.setGeometry(QtCore.QRect(220, 340, 171, 41)) self.pushButton_2.setObjectName("pushButton_2") self.label_3 = QtWidgets.QLabel(W1) self.label_3.setGeometry(QtCore.QRect(160, 40, 121, 41)) font = QtGui.QFont() font.setFamily("楷体") font.setPointSize(24) font.setBold(True) font.setWeight(75) self.label_3.setFont(font) self.label_3.setObjectName("label_3") self.retranslateUi(W1) QtCore.QMetaObject.connectSlotsByName(W1) def retranslateUi(self, W1): _translate = QtCore.QCoreApplication.translate W1.setWindowTitle(_translate("W1", "Form")) self.label.setText(_translate("W1", "接收子窗体数据：")) self.label_2.setText(_translate("W1", "给子窗体发送数据：")) self.pushButton.setText(_translate("W1", "打开子窗体")) self.pushButton_2.setText(_translate("W1", "向子窗体发送数据")) self.label_3.setText(_translate("W1", "主窗体"))