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[英]Replacing the existing MainWindow with a new window with Python, PyQt, Qt Designer
[英]Pyqt 5 new Window crashes Mainwindow
我有一个 MainWindow,我想在其中打开一个新窗口。
新窗口:
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'C:\Users\Tareq\Desktop\table.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_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(703, 449)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.tableWidget = QtWidgets.QTableWidget(self.centralwidget)
self.tableWidget.setGeometry(QtCore.QRect(0, 0, 701, 401))
self.tableWidget.setRowCount(48)
self.tableWidget.setColumnCount(4)
self.tableWidget.setObjectName("tableWidget")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 703, 21))
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"))
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_())
我按照说明添加到我的主窗口
self.pushButton_2.clicked.connect(self.create_new_window)
以及以下功能:
def create_new_window(self):
from tableWindow import Ui_MainWindow
self.tableWindow = Ui_MainWindow
self.tableWinow.show()
但是在按下 button2 后,程序崩溃了,没有给定的错误......
进程以退出代码 1 结束
正如 eyllanesc 所说,这可能是因为您在使用之前没有导入 QMainWindow。 但是,即便如此,您还是觉得您在创建自己的窗口子类化“对象”方面做得太多了。 将 QMainWindow 子类化并让它完成繁重的工作会容易得多(更 Pythonic?)。
试试这个小例子:
import sys
from PyQt5 import QtCore, QtWidgets
from PyQt5.QtWidgets import *
class Second(QtWidgets.QMainWindow):
def __init__(self, parent=None):
super(Second, self).__init__(parent)
#Setting a title, locating and sizing the window
self.title = 'My Second Window'
self.left = 200
self.top = 200
self.width = 500
self.height = 500
self.setWindowTitle(self.title)
self.setGeometry(self.left, self.top, self.width, self.height)
self.pushButton = QtWidgets.QPushButton("Close Me", self)
self.pushButton.clicked.connect(self.on_pushButton_clicked)
self.pushButton.move(120,120)
def on_pushButton_clicked(self):
self.close()
class First(QtWidgets.QMainWindow):
def __init__(self, parent=None):
super(First, self).__init__(parent)
self.title = 'My First Window'
self.left = 100
self.top = 100
self.width = 500
self.height = 500
self.setWindowTitle(self.title)
self.setGeometry(self.left, self.top, self.width, self.height)
self.pushButton = QtWidgets.QPushButton("Open Me", self)
self.pushButton.move(120,120)
self.pushButton.clicked.connect(self.on_pushButton_clicked)
self.newWindow = Second(self)
def on_pushButton_clicked(self):
self.newWindow.show()
app = QtWidgets.QApplication(sys.argv)
main = First()
main.show()
sys.exit(app.exec_())
它只是通过一个按钮从另一个窗口打开一个窗口。
我也有崩溃的主窗口,没有显示任何错误。 如果不找出代码中发生错误的位置,就很难调试代码。 我建议在代码顶部使用以下导入,您将在终端上打印错误异常
import cgitb
cgitb.enable(format = 'text')
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