Develop Reference

QwebEngineView doesn't show anything

I have created a piece of code that show a simple webpage (a bokeh graph saved in an html file). This code is working in Windows 10 at work, but on macos-mojave, using PyQT5.9, with Python 3.6, the opened window don't show anything, and makes python crash.
Could anyone helps ?
Many thanks
import sys
from PyQt5.QtWidgets import (QApplication)
from PyQt5.QtWebEngineWidgets import QWebEngineView
from PyQt5 import QtCore
class Principale():
def __init__(self):
self.view = QWebEngineView()
self.view.load(QtCore.QUrl("/Users/moncompte/Desktop/essai.html"))
self.view.show()
# Create a custom font
# ---------------------
app = QApplication(sys.argv)
fenetre=Principale()
sys.exit(app.exec_())

Add Custom Widget to listWidget on pyqt5

I used Qt Designer to make two .ui files, one is the Main Window of my application, and the second is a custom widget I made. My idea was to fill a listWidget on my Main application with this custom Widget to display data.
I made this code, which compiles without problem but it does not show the customWidget on the List when it runs
import sys
from PyQt5.QtWidgets import QMainWindow, QApplication, QPushButton, QWidget, QAction, QTabWidget,QVBoxLayout,QDialog
from PyQt5 import QtCore, QtGui, QtWidgets
from mainwindowReclamo import Ui_MainWindow
from widgetReclamos import Ui_Form
#Custom Widget*
class WidgetReclamo(QWidget, Ui_Form):
"""docstring for ClassName"""
def __init__(self,*args,**kwargs):
QWidget.__init__(self,*args,**kwargs)
self.setupUi(self)
print("I am Alive")
#My Main Program*
class ProgramaReclamos(QMainWindow, Ui_MainWindow):
def __init__(self,*args,**kwargs):
QMainWindow.__init__(self,*args,**kwargs)
self.setupUi(self)
#I create an Item*
Item = QtWidgets.QListWidgetItem(self.listWidget)
#I create a custom widget*
Item_Widget = WidgetReclamo()
#I set the Size from the Item to the same of the widget*
Item.setSizeHint(Item_Widget.sizeHint())
#I add it to the list*
self.listWidget.addItem(Item)
self.listWidget.setItemWidget(Item, Item_Widget)
if __name__ == '__main__':
app = QApplication(sys.argv)
prog = ProgramaReclamos()
prog.show()
sys.exit(app.exec_())
I saw some questions online wich their answer were for PyQt4 and they said something about using a Layout for the Widget, but I don´t understand if I have to make one becouse the widget was made in the .ui file

As EYLLANESC said on the comment:
Change Item.setSizeHint(Item_Widget.sizeHint()) to Item.setSizeHint(Item_Widget.size()) – eyllanesc
Thank you !

Python 3.6 | PyQt5 | QLabel doesn't display QPixmap

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?

PyQt5 & Qt Designer: why the second form displays a bad thing?

I can't make form1 to make parent object like it needs to be.
And all content in second form align to left-top corner and i have no way to make it work fine. May be someone know what i can do with this. Thank you!
How it looks in Qt Designer:
But how it looks really:
import sys
from PyQt5 import uic
from PyQt5.QtWidgets import QMainWindow, QApplication
class MainWindow(QMainWindow):
def __init__(self):
super().__init__()
# Set up the user interface from Designer.
uic.loadUi("mw.ui", self)
uic.loadUi("form1.ui", self.mn_general)
# Connect up the buttons.
self.pushButton.clicked.connect(self.BtnClck)
self.show()
def BtnClck(self):
print('Hello StackOverflow')
if __name__ == '__main__':
app = QApplication(sys.argv)
ex = MainWindow()
sys.exit(app.exec_())

Creating a transparent overlay with qt

I've been learning python recently and now I wanted to (try to) create my first real application, a subtitle player for Linux. So far I've been using the Greenfish subtitle player, which is aimed at Windows users and not properly working in Linux.
I wanted to create the application in qt, since I discovered that transparent windows are not possible in tkinter, but if anybody knows a better framework please suggest!
Now before starting I've been researching the web for several hours to discover how to get my application to show over a full screened flash video and it seems like this is not possible. However the aforementioned GF subtitle player manages to do so in Windows, but not in Linux(maybe it's also because it's running through wine).
So my question is it possible to create a transparent application that remains over a fullscreened flash video and if so, could you point me in the right direction?
Thanks in advance.
edit:
here some example code I've been trying. The window produced by this piece of code does not stay above a fullscreened video
import sys
from PyQt4 import QtGui, QtCore
class mymainwindow(QtGui.QMainWindow):
def __init__(self):
QtGui.QMainWindow.__init__(self, None, QtCore.Qt.WindowStaysOnTopHint)
app = QtGui.QApplication(sys.argv)
mywindow = mymainwindow()
mywindow.show()
app.exec_()
mywindow.show()

Update for PyQt5 pip install PyQt5
import sys
from PyQt5 import QtGui, QtCore, uic
from PyQt5 import QtWidgets
from PyQt5.QtWidgets import QMainWindow, QApplication
class MainWindow(QMainWindow):
def __init__(self):
QMainWindow.__init__(self)
self.setWindowFlags(
QtCore.Qt.WindowStaysOnTopHint |
QtCore.Qt.FramelessWindowHint |
QtCore.Qt.X11BypassWindowManagerHint
)
self.setGeometry(
QtWidgets.QStyle.alignedRect(
QtCore.Qt.LeftToRight, QtCore.Qt.AlignCenter,
QtCore.QSize(220, 32),
QtWidgets.qApp.desktop().availableGeometry()
))
def mousePressEvent(self, event):
QtWidgets.qApp.quit()
if __name__ == '__main__':
app = QApplication(sys.argv)
mywindow = MainWindow()
mywindow.show()
app.exec_()

The example code below will create a centred, frameless window that should stay on top of all other windows on Linux (you can click on the window to close it).
import sys
from PyQt4 import QtGui, QtCore
class mymainwindow(QtGui.QMainWindow):
def __init__(self):
QtGui.QMainWindow.__init__(self)
self.setWindowFlags(
QtCore.Qt.WindowStaysOnTopHint |
QtCore.Qt.FramelessWindowHint |
QtCore.Qt.X11BypassWindowManagerHint
)
self.setGeometry(QtGui.QStyle.alignedRect(
QtCore.Qt.LeftToRight, QtCore.Qt.AlignCenter,
QtCore.QSize(220, 32),
QtGui.qApp.desktop().availableGeometry()))
def mousePressEvent(self, event):
QtGui.qApp.quit()
app = QtGui.QApplication(sys.argv)
mywindow = mymainwindow()
mywindow.show()
app.exec_()