I am using Jupyter Notebook on Vscode and I'm new to PyQt5. When I run these lines of code, I got this Error message
I tried restarting the kernel and it only works once each time it but doesn't display the widget fully either. Here's a screenshot of the output
PS, I am using Anaconda 3 and Python 3 on Windows 10 16 GB RAM 64 bit
And here's my code:
import sys
from PyQt5.uic import loadUi
from PyQt5 import QtWidgets
from PyQt5.QtWidgets import QDialog, QWidget, QApplication, QLineEdit, QTableWidget, QStackedWidget
from PyQt5.QtCore import *
class welcomescreen(QDialog):
def __init__(self):
super(welcomescreen,self).__init__()
loadUi("welcome.ui", self)
# main
app = QApplication(sys.argv)
if app is None:
app = QtWidgets.QApplication(sys.argv)
acceuil=welcomescreen() #object from the class above
widget=QStackedWidget()
widget.addWidget(acceuil)
widget.setFixedHeight(850)
widget.setFixedWidth(1200)
widget.show()
try:
sys.exit(app.exec_())
except:
print("Exiting")
Related
An application is being created with a large number of different windows.
The bottom line is that I am trying to get from the main window (by clicking button) to the client window. There is "Back" button in the clients window, which should return the user to the main window.
Both codes are in different files. The problem occurs at the stage of pressing the "Customers" button (Process finished with exit code -1073740791 (0xC0000409)).
Moreover, if everything is in one file, then everything works fine. But only here the program is not planned to be small, so I don't want to put a huge code in one file.
Welcome_Screen.py
import sys
from PyQt5.uic import loadUi
from PyQt5 import QtWidgets, QtGui
from PyQt5.QtWidgets import QDialog, QApplication
import Customers
class WelcomeScreen(QDialog):
def __init__(self):
super(WelcomeScreen, self).__init__()
loadUi('screens/welcomescreen.ui', self)
self.CustomerData.clicked.connect(self.go_to_CustomerData)
def go_to_CustomerData(self):
client = Customers.CustomerScreen()
widget.addWidget(client)
widget.setCurrentIndex(widget.currentIndex() + 1)
# main
app = QApplication(sys.argv)
app.setWindowIcon(QtGui.QIcon('Icons/MainIcon.png'))
app.setApplicationDisplayName('Bonus Program')
welcome = WelcomeScreen()
widget = QtWidgets.QStackedWidget()
widget.addWidget(welcome)
widget.setFixedWidth(600)
widget.setFixedHeight(475)
widget.show()
try:
sys.exit(app.exec_())
except:
print("Exiting")
Customers.py
import sys
from PyQt5.uic import loadUi
from PyQt5 import QtWidgets, QtCore, QtGui
from PyQt5.QtWidgets import QDialog, QApplication, QWidget, QMessageBox, QTableWidget, QTableWidgetItem, QTableView
from PyQt5.QtSql import QSqlDatabase, QSqlTableModel, QSqlQuery
from PyQt5.QtGui import QIcon
import Welcome_Screen as ws
import sqlite3
db_path = 'Bonus_db.sqlite'
class CustomerScreen(QDialog):
def __init__(self):
super(CustomerScreen, self).__init__()
loadUi("screens/customerscreen.ui", self)
self.back_btn.setIcon(QIcon('Icons/Back.png'))
self.back_btn.setIconSize(QtCore.QSize(45, 60))
self.back_btn.clicked.connect(self.go_Back_to_WelcomeScreen)
# self.SoldTos.clicked.connect(self.gotoSoldTos)
def go_Back_to_WelcomeScreen(self):
welcome = ws.WelcomeScreen()
ws.widget.addWidget(welcome)
ws.widget.setCurrentIndex(ws.widget.currentIndex() + 1)
Customer_app = QApplication(sys.argv)
cust_window = CustomerScreen()
cust_window.show()
sys.exit(Customer_app.exec_())
I tried to embed TensorBoard to my GUI app with PyQt5, but I got always the same issue: the app won't display the SVG graphs it; shows only the HTML.
I want to know if there is a module or function in PyQt5 that can show SVG images in webpage using their URL(s).
import sys
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.QtWebEngineWidgets import QWebEngineView
from PyQt5.QtWidgets import QApplication, QWidget, QMainWindow
app = QApplication(sys.argv)
web = QWebEngineView()
web.load(QUrl("https://tensorboard.dev/experiment/EDZb7XgKSBKo6Gznh3i8hg/#scalars"))
web.show()
sys.exit(app.exec_())
I'm coming from a tkinter background where everything can be put in a frame.
How can I get my current working codes result (which launches a WebEngine View of a page, google in this instance) to sit inside a main window like shown in the image? Going by the image I want the WebEngine to be housed in the "Green" Box for example.
Working code including all versions used
"""
Python version - 3.7.3
PyQt5 5.15.3
PyQt5-Qt 5.15.2
PyQt5-sip 12.8.1
PyQtWebEngine 5.15.3
PyQtWebEngine-Qt 5.15.2
"""
import sys
from PyQt5.QtWebEngineWidgets import QWebEnginePage
from PyQt5.QtWidgets import QApplication
from PyQt5.QtCore import QUrl
from PyQt5.QtWebEngineWidgets import QWebEngineView
url = 'https://google.com'
app = QApplication(sys.argv)
# QWebEngineView
browser = QWebEngineView()
browser.load(QUrl(url))
browser.show()
sys.exit(app.exec_())
You have to use a QGridLayout:
import sys
from PyQt5.QtWidgets import QApplication, QGridLayout, QMainWindow, QTextEdit, QWidget
from PyQt5.QtCore import QUrl
from PyQt5.QtWebEngineWidgets import QWebEngineView
url = "https://google.com"
app = QApplication(sys.argv)
w = QMainWindow()
browser = QWebEngineView()
browser.load(QUrl(url))
central_widget = QWidget()
w.setCentralWidget(central_widget)
lay = QGridLayout(central_widget)
lay.addWidget(browser, 0, 0, 2, 1)
lay.addWidget(QTextEdit(), 0, 1)
lay.addWidget(QTextEdit(), 1, 1)
lay.setColumnStretch(0, 1)
lay.setColumnStretch(1, 1)
lay.setRowStretch(0, 1)
lay.setRowStretch(1, 1)
w.show()
sys.exit(app.exec_())
You could use a vertical layout to hold the two red boxes. And then use a horizontal layout to hold the QWebEngineView and the vertical layout. Zetcode has a good tutorial for layouts. Code heavily borrowed from #eyllanesc:
import sys
from PyQt5.QtWidgets import (QApplication, QMainWindow,
QHBoxLayout, QVBoxLayout,
QTextEdit, QWidget)
from PyQt5.QtCore import QUrl
from PyQt5.QtWebEngineWidgets import QWebEngineView
url = "https://google.com"
app = QApplication(sys.argv)
w = QMainWindow()
browser = QWebEngineView()
browser.load(QUrl(url))
central_widget = QWidget()
w.setCentralWidget(central_widget)
vertical = QVBoxLayout()
vertical.addWidget(QTextEdit())
vertical.addWidget(QTextEdit())
horizontal = QHBoxLayout(central_widget)
horizontal.addWidget(browser)
horizontal.addLayout(vertical)
w.show()
sys.exit(app.exec_())
I'm writing simple application using PyQT5 to read data from serial port, but readyRead is not emitted when data is received from serial port.
If application is blocked by waitForReadyRead() dataReady() is called when data is received.
Using Windows 10 with Python 3.7.4, PyQt5 5.13.1
Minimal code to reproduce problem:
from PyQt5.QtWidgets import QApplication, QVBoxLayout, QWidget
from PyQt5.QtWidgets import QMainWindow, QLabel
from PyQt5.QtCore import Qt, QIODevice
from PyQt5.QtSerialPort import QSerialPort
import sys
class ExampleGUI(QMainWindow):
def __init__(self):
super().__init__()
#self.setGeometry(50,50,500,300)
self.setWindowTitle("Example")
# Start mainLayout
self.mainLayout = QVBoxLayout()
serialLabel = QLabel("Example program")
self.mainLayout.addWidget(serialLabel)
widget = QWidget()
widget.setLayout(self.mainLayout)
self.setCentralWidget(widget)
self.serPort = QSerialPort()
self.serPort.readyRead.connect(self.dataReady)
self.serPort.setPortName("COM4")
self.serPort.setBaudRate(9600)
self.serPort.open(QIODevice.ReadWrite)
self.serPort.writeData("Hi".encode())
# self.serPort.waitForReadyRead()
def dataReady(self):
print(bytes(self.serPort.readAll()))
if __name__ == '__main__':
app = QApplication([])
gui = ExampleGUI()
gui.show()
app.exec_()
Appears it is bug within Qt https://bugreports.qt.io/browse/QTBUG-78086. Using older version 5.13.0 solves the problem.
I'm trying to display a PNG image in a Widget using QLabel. I built the Widget using Qt Designer and the label shows the image properly. When I load the .ui into mi .py and execute it, everything shows up well, except for the label. I tried loading the QPixmap manually on the python code, but it didn't work either.
from PyQt5.QtWidgets import (QApplication, QLabel)
from PyQt5.QtGui import (QPixmap)
from PyQt5 import uic
import sys
import os
form = uic.loadUiType('gui/Files/Login.ui')
class LoginWindow(form[0], form[1]):
def __init__(self):
super().__init__()
self.setupUi(self)
self.logoLabel.setPixmap(QPixmap(os.path.abspath(os.path.join(os.path.dirname(__file__), 'logo.png'))))
self.logoLabel.show()
if __name__ == '__main__':
app = QApplication(sys.argv)
win = LoginWindow()
win.show()
app.exec_()
Any idea what am I doing wrong? Any sugestions on how could I display the image other than with QLabel?