PyQt widget neu laden oder aktualisieren

Mein problem ist, dass wenn ich einen Namen auf-widget "Form1" dieser name wird in eine Datei geschrieben. Wenn ich auf OK-Taste auf das widget "Form1" ich kann nicht sehen, die gleichen Namen auf-widget "Form2", die ich zuvor ausgewählt haben.

Das problem ist, dass das widget "Form2" ist nicht auf dem neuesten Stand. Ich versuchte, legen Sie selbst.update am Anfang auf das widget "Form2", aber es funktioniert nicht. Wie kann ich die refresh-widget "Form2" oder "neu laden" der Inhalt der Datei?

Ich habe einen einfachen code:

#!/usr/bin/python
# -*- coding: utf-8 -*-

import sys

from functools import partial
from PyQt4.QtGui import *
from PyQt4.QtCore import *
from PyQt4 import QtGui, QtCore
from math import sqrt
from time import gmtime, strftime

class Form1(QWidget):
    showForm2Signal = pyqtSignal()

    def __init__(self, parent=None):
        super(Form1, self).__init__(parent)

        self.label = QtGui.QLabel(self)
        self.label.setGeometry(0, 40, 480, 400)
        self.label.move(0,40)

        #Select name
        self.styleTerminalSettings = QtGui.QLabel("Please select your name:", self)
        self.styleTerminalSettings.move(20,40)
        self.styleTerminalSettings.resize(250,30)
        self.styleTerminalSettings.setStyleSheet("color: black;  background-color: transparent; font-size: 12pt; font-weight: bold;")

        self.comboBox = QtGui.QComboBox(self)
        self.comboBox.addItem("NAME 1")
        self.comboBox.addItem("NAME 2")
        self.comboBox.addItem("NAME 3")
        self.comboBox.addItem("NAME 4")
        self.comboBox.move(20,80)
        self.comboBox.resize(440,50)
        self.comboBox.currentIndexChanged.connect(self.selectionchange)

        #OK button
        self.ok_button = QtGui.QPushButton("OK", self)
        self.ok_button.resize(self.ok_button.minimumSizeHint())
        self.ok_button.move(0,340)
        self.ok_button.resize(480,60)
        self.ok_button.setStyleSheet("color: #25373D; background-color: #71BA51;  font-size: 16pt; font-weight: bold;")

        layout = QVBoxLayout(self)

        self.ok_button.clicked.connect(self.showForm2Signal.emit)

    def selectionchange(self,i): 
        pos_user_name = self.comboBox.currentText()
        self.users_write(pos_user_name)

    #Name write to file 
    def users_write(self, pos_user_name):
        filename = "user_name_session"

        target = open(filename, 'w')
        target.truncate()
        target.write(pos_user_name)
        target.close()    

class Form2(QWidget):
    def __init__(self, parent=None):
        super(Form2, self).__init__(parent)

        global pos_user_name 

        self.label = QtGui.QLabel(self)
        self.label.setGeometry(0, 40, 480, 400)
        self.label.move(0,40)

        #Name read from file
        filename = "user_name_session"
        target = open(filename, "r+")
        name = target.read(10);

        self.styleCashRegister = QtGui.QLabel("Name:", self)
        self.styleCashRegister.move(20,40)
        self.styleCashRegister.resize(170,30)
        self.styleCashRegister.setStyleSheet("color: black; background-color: transparent;  font-size: 16pt; font-weight: bold;")

        self.cashregisterid = QtGui.QLineEdit(self)
        self.cashregisterid.setText(str(name))
        self.cashregisterid.move(100, 40)
        self.cashregisterid.resize(260,30)
        self.cashregisterid.setStyleSheet("color: #25373D;  font-size: 16pt; font-weight: bold;")

class MainWidget(QWidget):
    def __init__(self, parent=None):
        super(MainWidget, self).__init__(parent)
        self.stack = QStackedWidget()
        layout = QVBoxLayout(self)
        layout.addWidget(self.stack)
        layout.setContentsMargins(0, 0, 0, 0)

        self.setGeometry(0, 0, 480, 400)
        self.setWindowTitle("PYQT WIDGET TEST")
        self.setStyleSheet("background-color: #E8E8E8")

        self.form1 = Form1(self)
        self.form2 = Form2(self)

        self.stack.addWidget(self.form1)
        self.stack.addWidget(self.form2)

        self.form1.showForm2Signal.connect(partial(self.stack.setCurrentWidget,self.form2))

        self.stack.setCurrentWidget(self.form1) 

if __name__ == '__main__':
    app = QApplication(sys.argv)
    w = MainWidget()
    w.show()
    app.exec_()
    sys.exit()

InformationsquelleAutor user3740961 | 2016-02-16