Changing from Main Window to a new Window

Starstriker

Hello,
i have some problems with my code. Im trying to change from a main window to new window.
Here is the code:

import sys
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtCore import Qt
from Tempauslesen_Test import Temperatur1
from PyQt5.QtCore import QTimer

class do_Progressbar(QMainWindow):
        def setupUi(self, MainWindow):
            MainWindow.setObjectName("MainWindow")
            MainWindow.resize(300, 300)
            self.centralwidget = QtWidgets.QWidget(MainWindow)
            self.centralwidget.setObjectName("centralwidget")
            self.progressBar = QtWidgets.QProgressBar(self.centralwidget)
            self.progressBar.setGeometry(QtCore.QRect(80, 120, 118, 24))
            self.progressBar.setMaximum(200)
            #self.progressBar.setProperty(0)
            self.progressBar.setObjectName("progressBar")
            MainWindow.setCentralWidget(self.centralwidget)
            self.menubar = QtWidgets.QMenuBar(MainWindow)
            self.menubar.setGeometry(QtCore.QRect(0, 0, 300, 28))
            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)
        
            self.timer = QTimer()
            self.timer.timeout.connect(self.update_temperature)
            self.timer.start(1)

        def update_temperature(self):
            temperature = Temperatur1()
            if temperature < 500:
                self.progressBar.setValue(temperature)
            else:
                self.timer.stop()

        def retranslateUi(self, MainWindow):
            _translate = QtCore.QCoreApplication.translate
            MainWindow.setWindowTitle(_translate("MainWindow", "Temperatur1"))
            self.progressBar.setFormat(_translate("MainWindow", "%p°C"))

       
class Fenster(QWidget):  												

    def __init__(self):													
        super(Fenster,self).__init__()	
        self.initMe()												

    def initMe(self):
        button1 = QPushButton('Abfahrt!',self)
        button1.move(300,300)
        button1.clicked.connect(self.do_progressbar1)
        button2 = QPushButton('Abbrechen',self)
        button2.move(400,300)
        button2.clicked.connect(QtCore.QCoreApplication.instance().quit)					
        w = QLabel(self)
        w.setPixmap(QPixmap("Download.png"))
        w.move(200,50)
        z = QLabel("<html><head/><body><p><span style=\" font-size:9pt; font-style:italic;\">Copyright by Felix Horstmann, Kevin Weidner</span></p></body></html>",self)
        z.move(50,400)
        self.setGeometry(50,50,790,435)								
        self.setWindowTitle("Rotor-Heizprozess")						
        self.setWindowIcon(QIcon("Feuer.png"))							
        self.show() 
        
    def do_progressbar1(self):
        self.w = do_Progressbar()
        self.w.show()
        self.hide()

if __name__ == "__main__":
    app = QApplication(sys.argv)
    w = Fenster()															
    sys.exit(app.exec_())

This code is running, but after clicking on the button, only an empty window is opening.
Any ideas?

greetz from Germany

SGaist

Hi and welcome to devnet,

One thing that stands out is that you re-implement setupUi which won't be called if you don't do it in the constructor and that method is used for Designer based widget.

However, shouldn't you rather use a QDialog rather than a full blown QMainWindow to show a progress bar ?

It will also make your code simpler and cleaner.