Main.py

Question

我是python的新手。我正在使用pyqt5进行GUI开发。我有一个主窗口，应关闭该窗口，并在单击按钮后出现新对话框。但是它不会关闭，也不会显示任何错误并打开nextDialog。我还想在nextDialog中单击“确定”按钮时关闭nextDialog。请帮助检查问题。我正在尝试开发一个新项目，但在这个问题上陷于困境。代码如下。

Main.py

from PyQt5 import QtCore, QtGui, QtWidgets
from nextDialog import Ui_Dialog

class Ui_MainWindow(QtWidgets.QMainWindow):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(370, 171)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(110, 50, 75, 23))
        self.pushButton.setObjectName("pushButton")
        MainWindow.setCentralWidget(self.centralwidget)

        self.pushButton.clicked.connect(self.opennext)

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

    def opennext(self):
        self.Dialog = QtWidgets.QDialog()
        self.ui = Ui_Dialog()
        self.ui.setupUi(self.Dialog)
        self.Dialog.show()
        self.close() #Not working

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.pushButton.setText(_translate("MainWindow", "Open"))


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_())

    from PyQt5 import QtCore, QtGui, QtWidgets
    import sys

nextDialog.py

class Ui_Dialog(QtWidgets.QMainWindow):
    def setupUi(self, Dialog):
    Dialog.setObjectName("Dialog")
    Dialog.resize(346, 182)
    self.pushButton = QtWidgets.QPushButton(Dialog)
    self.pushButton.setGeometry(QtCore.QRect(110, 80, 75, 23))
    self.pushButton.setObjectName("pushButton")

    self.pushButton.clicked.connect(self.exit)

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

    def exit(self):
        self.hide() #This also not working, I want either of these two to 
                    #work

    def retranslateUi(self, Dialog):
        _translate = QtCore.QCoreApplication.translate
        Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
        self.pushButton.setText(_translate("Dialog", "OK"))

Answer 1

尝试一下：

main.py

y = 0
def foo():
    return y # This is a local variable (but unbound so will error)
    y = 1    # this is unreachable but still makes `y` local.

nextDialog.py

from PyQt5 import QtCore, QtGui, QtWidgets
from nextDialog import Ui_Dialog

class MainWindow(QtWidgets.QMainWindow):
    def __init__(self):
        super().__init__()
        self.centralwidget = QtWidgets.QWidget()
        self.setCentralWidget(self.centralwidget)
        self.pushButton = QtWidgets.QPushButton("Open", self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(110, 50, 75, 23))

        self.pushButton.clicked.connect(self.opennext)

    def opennext(self):
        self.Dialog = QtWidgets.QDialog()
        self.ui = Ui_Dialog()
        self.ui.setupUi(self.Dialog)
        self.Dialog.show()
        self.close() #Not working

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

Answer 2

我有点难以理解您的代码，我只是使用Designer来制作我的GUI，

无论如何，我为您的main.py做了拼图的第一部分

第4行应显示为class Ui_MainWindow(object):

并关闭第25车道的第一个窗口，请使用MainWindow.close()

在一开始也添加了import sys，这里是代码

main.py：

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Sat Apr 18 17:43:19 2020

@author: Pietro
"""

import sys
from PyQt5 import QtCore, QtGui, QtWidgets
from nextDialog import Ui_Dialog

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(370, 171)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(110, 50, 75, 23))
        self.pushButton.setObjectName("pushButton")
        MainWindow.setCentralWidget(self.centralwidget)

        self.pushButton.clicked.connect(self.opennext)

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

    def opennext(self):
        self.Dialog = QtWidgets.QDialog()
        self.ui = Ui_Dialog()
        self.ui.setupUi(self.Dialog)
        self.Dialog.show()
        MainWindow.close()

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.pushButton.setText(_translate("MainWindow", "Open"))


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

第一个打开的窗口，然后在按下打开的按钮并出现新窗口时将其关闭，谜语的第二部分将花费更长的时间，我会在有空余时间的情况下尽快尝试

下面答案中的Dialog.py似乎不知道为什么起作用（也不知道main.py的工作原理，但是对我来说，def退出不起作用的事实更不合逻辑）。

nextDialog.py

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Sat Apr 18 17:43:19 2020

@author: Pietro
"""

import sys
from PyQt5 import QtCore, QtGui, QtWidgets



class Ui_Dialog(QtWidgets.QMainWindow):
    def setupUi(self, Dialog):
        Dialog.setObjectName("Dialog")
        Dialog.resize(346, 182)
        self.pushButton = QtWidgets.QPushButton(Dialog)
        self.pushButton.setGeometry(QtCore.QRect(110, 80, 75, 23))
        self.pushButton.setObjectName("pushButton")

        self.pushButton.clicked.connect(Dialog.close)  # as answer below dont know why def  exit doesnt work

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


#    def exit(self):
#        print('exit' *5)
#        Dialog.close()

    def retranslateUi(self, Dialog):
        _translate = QtCore.QCoreApplication.translate
        Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
        self.pushButton.setText(_translate("Dialog", "OK"))

self.close和self.hide在pyqt5中不起作用

Main.py

nextDialog.py

2 个答案: