有一个创建 Ui_MainWindow 类（主窗口）的 mainwindow.py 文件。有一个名为 Myapp.py 的文件，它创建了 Ui_MainWindow 类的 MainWindowUIClass 类的子类，应该从中调用主窗口。当 Myapp.py 启动时，会调用该窗口。但是当按下时，按钮关闭，消息中止（断开连接）。请帮我弄清楚为什么会这样。
主窗口.py 代码：
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'mainwindow-2.ui'
#
# Created by: PyQt5 UI code generator 5.15.2
#
# 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
from PyQt5.QtCore import QObject, pyqtSlot
class Ui_MainWindow(QObject):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.gridLayout_2 = QtWidgets.QGridLayout(self.centralwidget)
self.gridLayout_2.setObjectName("gridLayout_2")
self.splitter = QtWidgets.QSplitter(self.centralwidget)
self.splitter.setOrientation(QtCore.Qt.Vertical)
self.splitter.setObjectName("splitter")
self.widget = QtWidgets.QWidget(self.splitter)
self.widget.setObjectName("widget")
self.horizontalLayout_2 = QtWidgets.QHBoxLayout(self.widget)
self.horizontalLayout_2.setContentsMargins(0, 0, 0, 0)
self.horizontalLayout_2.setObjectName("horizontalLayout_2")
self.label = QtWidgets.QLabel(self.widget)
self.label.setWordWrap(True)
self.label.setObjectName("label")
self.horizontalLayout_2.addWidget(self.label)
self.frame = QtWidgets.QFrame(self.widget)
self.frame.setFrameShape(QtWidgets.QFrame.StyledPanel)
self.frame.setFrameShadow(QtWidgets.QFrame.Raised)
self.frame.setObjectName("frame")
self.gridLayout = QtWidgets.QGridLayout(self.frame)
self.gridLayout.setObjectName("gridLayout")
self.horizontalLayout = QtWidgets.QHBoxLayout()
self.horizontalLayout.setObjectName("horizontalLayout")
self.label_2 = QtWidgets.QLabel(self.frame)
self.label_2.setObjectName("label_2")
self.horizontalLayout.addWidget(self.label_2)
self.lineEdit = QtWidgets.QLineEdit(self.frame)
self.lineEdit.setObjectName("lineEdit")
self.horizontalLayout.addWidget(self.lineEdit)
self.pushButton = QtWidgets.QPushButton(self.frame)
self.pushButton.setObjectName("pushButton")
self.horizontalLayout.addWidget(self.pushButton)
self.gridLayout.addLayout(self.horizontalLayout, 0, 0, 1, 2)
self.textEdit = QtWidgets.QTextEdit(self.frame)
self.textEdit.setObjectName("textEdit")
self.gridLayout.addWidget(self.textEdit, 1, 0, 1, 2)
spacerItem = QtWidgets.QSpacerItem(583, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)
self.gridLayout.addItem(spacerItem, 2, 0, 1, 1)
self.pushButton_2 = QtWidgets.QPushButton(self.frame)
self.pushButton_2.setObjectName("pushButton_2")
self.gridLayout.addWidget(self.pushButton_2, 2, 1, 1, 1)
self.horizontalLayout_2.addWidget(self.frame)
self.textBrowser = QtWidgets.QTextBrowser(self.splitter)
self.textBrowser.setObjectName("textBrowser")
self.gridLayout_2.addWidget(self.splitter, 0, 0, 1, 1)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 22))
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(self.browseSlot)
self.pushButton_2.clicked.connect(self.writeDocSlot)
self.lineEdit.returnPressed.connect(self.returnedPressedSlot)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.label.setText(_translate("MainWindow", "KSERVICE"))
self.label_2.setText(_translate("MainWindow", "File Name"))
self.pushButton.setText(_translate("MainWindow", "Browse"))
self.pushButton_2.setText(_translate("MainWindow", "Write Doc"))
@pyqtSlot( )
def returnedPressedSlot(self):
pass
@pyqtSlot( )
def writeDocSlot(self):
pass
@pyqtSlot( )
def browseSlot(self):
pass
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
MyApp.py 代码：
# MyApp.py
## D. Thiebaut
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtCore import QObject, pyqtSlot
from mainwindow2 import Ui_MainWindow
import sys
class MainWindowUIClass(Ui_MainWindow):
def __init__(self):
# Initialize the super class
super().__init__()
def setupUi(self, MW):
# Setup the UI of the super class, and add here code
# that relates to the way we want our UI to operate.
super().setupUi(MW)
# close the lower part of the splitter to hide the
# debug window under normal operations
self.splitter.setSizes([300, 0])
def debugPrint(self, msg):
# Print the message in the text edit at the bottom of the
# horizontal splitter
self.debugTextBrowser.append(msg)
# slot
def returnPressedSlot(self):
# Called when the user enters a string in the line edit and
# presses the ENTER key.
self.debugPrint("RETURN key pressed in LineEdit widget")
# slot
def writeDocSlot(self):
# Called when the user presses the Write-Doc button.
self.debugPrint("Write-Doc button pressed")
# slot
def browseSlot(self):
# Called when the user presses the Browse button
self.debugPrint("Browse button pressed")
def main():
# This is the MAIN ENTRY POINT of our application. The code at the end
# of the mainwindow.py script will not be executed, since this script
# is now our main program. We have copied the code from mainwindow.py
# here since it was automatically generated by pyuic5
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = MainWindowUIClass()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
main()