Question

我正在为3D打印机开发应用程序。我只有python的基本知识，因此我在参考了一些教程后决定使用Qt Designer。在一个教程中（他在不使用设计器的情况下使用QtPy开发了GUI）中，教师添加了一个按钮，单击后将弹出一个对话框，要求您进行确认。我试图在应用程序中复制它。首先我遵循他的编码

这是代码

import sys
from PyQt5 import QtCore, QtGui, QtWidgets

class Window(QtWidgets.QMainWindow):

    def __init__(self):
        super(Window, self).__init__()
        self.setGeometry(50, 50, 500, 300)
        self.setWindowTitle("test")
        self.setWindowIcon(QtGui.QIcon('clay.png'))



        self.home()

    def home(self):

        #push button
        btn = QtWidgets.QPushButton("Quit", self)
        btn.clicked.connect(self.close_application)
        btn.resize(btn.minimumSizeHint())
        btn.move(0, 100)

        self.show()


    def close_application(self):

        #message box
        choice = QtWidgets.QMessageBox.question(self, "extract!", "get inside!!!",QtWidgets.QMessageBox.Yes | QtWidgets.QMessageBox.No)

        if choice == QtWidgets.QMessageBox.Yes:
            print("extracting")
            sys.exit()

        else:
            pass


def run():
    app = QtWidgets.QApplication(sys.argv)

    GUI = Window()
    sys.exit(app.exec_())

run()

然后我尝试将其添加到Qt设计器开发的代码中，

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

# Form implementation generated from reading ui file 'test.ui'
#
# Created by: PyQt5 UI code generator 5.9.2
#
# WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(800, 600)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(70, 90, 93, 28))
        self.pushButton.setObjectName("pushButton")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 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)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.pushButton.setText(_translate("MainWindow", "PushButton"))
        self.pushButton.clicked.connect(self.close_app)

    def close_app(self):
        #message box
        choice = QtWidgets.QMessageBox.question(self, "Exit", "Are you sure?",QtWidgets.QMessageBox.Yes | QtWidgets.QMessageBox.No)

        if choice == QtWidgets.QMessageBox.Yes:
            print("extracting")
            sys.exit()

        else:
            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_())

但是显示错误

回溯（最近通话最近一次）：

File "C:\Users\New User\Desktop\test\test - Copy.py", line 40, in close_app
    choice = QtWidgets.QMessageBox.question(self, "Exit", "Are you sure?",QtWidgets.QMessageBox.Yes | QtWidgets.QMessageBox.No)
TypeError: question(QWidget, str, str, buttons: Union[QMessageBox.StandardButtons, QMessageBox.StandardButton] = QMessageBox.StandardButtons(QMessageBox.Yes|QMessageBox.No), defaultButton: QMessageBox.StandardButton = QMessageBox.NoButton): argument 1 has unexpected type 'Ui_MainWindow'

我的原始应用程序如下所示

Qt和QtPy弹出消息

0 个答案: