My code was created with PyQt4 and I want to convert it to PyQt5.
I have tried some scripts to convert the code; but, nothing changed except the name.
What do I need to change manually in order to make the code work with PyQt5?
Here is the first part of my code:
import sys
from pymaxwell import *
from numpy import *
from PyQt4 import QtGui, QtCore, uic
from PyQt4.QtGui import QMainWindow, QApplication
from PyQt4.QtCore import *
from PyQt4.phonon import Phonon
from ffmpy import FFmpeg
import os
import app_window_dark
import about
uifile = 'Ui/app_window_dark.ui'
aboutfile = 'Ui/about.ui'
Ui_MainWindow, QtBaseClass = uic.loadUiType(uifile)
Ui_Dialog= uic.loadUiType(uifile)
class About(QtGui.QMainWindow, about.Ui_Dialog):
def __init__(self, parent=None):
super(About, self).__init__()
QtGui.QMainWindow.__init__(self, parent)
Ui_Dialog.__init__(self)
self.setWindowModality(QtCore.Qt.ApplicationModal)
point = parent.rect().bottomRight()
global_point = parent.mapToGlobal(point)
self.move(global_point - QPoint(395, 265))
self.setupUi(self)
class MyApp(QtGui.QMainWindow, app_window_dark.Ui_MainWindow):
def __init__(self):
super(MyApp, self).__init__()
QtGui.QMainWindow.__init__(self)
self.ui = Ui_MainWindow.__init__(self)
self.setupUi(self)
self.about_btn.clicked.connect(self.popup)
#prev next
self.btn_next.clicked.connect(self.renderSet)
self.btn_prev.clicked.connect(self.renderSet)
and also this code:
if __name__ == "__main__":
app = QApplication(sys.argv)
#style = QApplication.setStyle('plastique')
window = MyApp()
window.setFixedSize(750, 320)
window.show()
sys.exit(app.exec_())
The main change from Qt4 to Qt5 and hence from PyQt4 to PyQt5 is the rearrangement of certain classes so that the Qt project is scalable and generates a smaller executable.
The QtGui library was divided into 2 submodules: QtGui and QtWidgets, in the second only the widgets, namely QMainWindow, QPushButton, etc. And that is the change you must make:
[...]
from PyQt5 import QtGui, QtCore, uic, QtWidgets
from PyQt5.QtWidgets import QMainWindow, QApplication
from PyQt5.QtCore import *
[...]
Ui_MainWindow, QtBaseClass = uic.loadUiType(uifile)
Ui_Dialog= uic.loadUiType(uifile)
class About(QtWidgets.QMainWindow, about.Ui_Dialog):
def __init__(self, parent=None):
QtWidgets.QMainWindow.__init__(self, parent)
self.setupUi(self)
self.setWindowModality(QtCore.Qt.ApplicationModal)
point = parent.rect().bottomRight()
global_point = parent.mapToGlobal(point)
self.move(global_point - QPoint(395, 265))
class MyApp(QtWidgets.QMainWindow, app_window_dark.Ui_MainWindow):
def __init__(self):
QtWidgets.QMainWindow.__init__(self)
self.setupUi(self)
self.about_btn.clicked.connect(self.popup)
#prev next
self.btn_next.clicked.connect(self.renderSet)
self.btn_prev.clicked.connect(self.renderSet)
Note: Phonon does not exist in PyQt5, you must use QtMultimedia, an accurate solution you can find it in the following answer: Phonon class not present in PyQt5
Related
I use Qtdesigner and then convert it to py file..I want to take input text through the QLineEdit and put it to pyautogui.typewrite. facing problem to solve it.
I write the the code bleow
import pyautogui
import time
import sys
from PyQt5 import QtWidgets, QtCore, QtGui
from PyQt5.QtCore import Qt
from PyQt5.QtGui import QMovie
from PyQt5.QtCore import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.uic import loadUiType
from messageRHR import Ui_MainWindow
class MainThread(QThread):
def __init__(self,message):
super(MainThread,self).__init__()
# self.message = QLineEdit(self)
def run(self):
self.taskExecution()
def taskExecution(self):
pyautogui.typewrite(message)
time.sleep(1)
pyautogui.press('Enter')
startExecution = MainThread()
class Main(QMainWindow):
def __init__(self):
super(Main, self).__init__()
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
self.ui.pushButton.clicked.connect(self.startTask)
self.ui.pushButton_2.clicked.connect(self.close)
def startTask(self):
self.ui.movie = QtGui.QMovie("00545cb7179c504433d4c8f5e845f286.gif")
self.ui.label_2.setMovie(self.ui.movie)
self.ui.movie.start()
self.ui.movie = QtGui.QMovie("00545cb7179c504433d4c8f5e845f286.gif")
self.ui.label_3.setMovie(self.ui.movie)
self.ui.movie.start()
message = QLineEdit(self)
startExecution.start()
app = QApplication(sys.argv)
rsn = Main()
rsn.show()
exit(app.exec_())
My code was created with PyQt4 and I want to convert it to PyQt5.
I have tried some scripts to convert the code; but, nothing changed except the name.
What do I need to change manually in order to make the code work with PyQt5?
Here is the first part of my code:
import sys
from pymaxwell import *
from numpy import *
from PyQt4 import QtGui, QtCore, uic
from PyQt4.QtGui import QMainWindow, QApplication
from PyQt4.QtCore import *
from PyQt4.phonon import Phonon
from ffmpy import FFmpeg
import os
import app_window_dark
import about
uifile = 'Ui/app_window_dark.ui'
aboutfile = 'Ui/about.ui'
Ui_MainWindow, QtBaseClass = uic.loadUiType(uifile)
Ui_Dialog= uic.loadUiType(uifile)
class About(QtGui.QMainWindow, about.Ui_Dialog):
def __init__(self, parent=None):
super(About, self).__init__()
QtGui.QMainWindow.__init__(self, parent)
Ui_Dialog.__init__(self)
self.setWindowModality(QtCore.Qt.ApplicationModal)
point = parent.rect().bottomRight()
global_point = parent.mapToGlobal(point)
self.move(global_point - QPoint(395, 265))
self.setupUi(self)
class MyApp(QtGui.QMainWindow, app_window_dark.Ui_MainWindow):
def __init__(self):
super(MyApp, self).__init__()
QtGui.QMainWindow.__init__(self)
self.ui = Ui_MainWindow.__init__(self)
self.setupUi(self)
self.about_btn.clicked.connect(self.popup)
#prev next
self.btn_next.clicked.connect(self.renderSet)
self.btn_prev.clicked.connect(self.renderSet)
and also this code:
if __name__ == "__main__":
app = QApplication(sys.argv)
#style = QApplication.setStyle('plastique')
window = MyApp()
window.setFixedSize(750, 320)
window.show()
sys.exit(app.exec_())
The main change from Qt4 to Qt5 and hence from PyQt4 to PyQt5 is the rearrangement of certain classes so that the Qt project is scalable and generates a smaller executable.
The QtGui library was divided into 2 submodules: QtGui and QtWidgets, in the second only the widgets, namely QMainWindow, QPushButton, etc. And that is the change you must make:
[...]
from PyQt5 import QtGui, QtCore, uic, QtWidgets
from PyQt5.QtWidgets import QMainWindow, QApplication
from PyQt5.QtCore import *
[...]
Ui_MainWindow, QtBaseClass = uic.loadUiType(uifile)
Ui_Dialog= uic.loadUiType(uifile)
class About(QtWidgets.QMainWindow, about.Ui_Dialog):
def __init__(self, parent=None):
QtWidgets.QMainWindow.__init__(self, parent)
self.setupUi(self)
self.setWindowModality(QtCore.Qt.ApplicationModal)
point = parent.rect().bottomRight()
global_point = parent.mapToGlobal(point)
self.move(global_point - QPoint(395, 265))
class MyApp(QtWidgets.QMainWindow, app_window_dark.Ui_MainWindow):
def __init__(self):
QtWidgets.QMainWindow.__init__(self)
self.setupUi(self)
self.about_btn.clicked.connect(self.popup)
#prev next
self.btn_next.clicked.connect(self.renderSet)
self.btn_prev.clicked.connect(self.renderSet)
Note: Phonon does not exist in PyQt5, you must use QtMultimedia, an accurate solution you can find it in the following answer: Phonon class not present in PyQt5
I am trying to send signal and receive it between two windows, i followed exactly the documentation.
While running the program : No error Nor receiving the signal in the slot
While Debugging in #pycharm: i receive below error :
TypeError: connect() failed between started() and _signal()
Two files Codes are below:
First file name: Signals.py
import sys
from PyQt5 import QtWidgets as qtw
from PyQt5 import QtCore as qtc
import slots
class aaa(qtw.QWidget,qtc.QObject):
submitted = qtc.pyqtSignal(str)
def __init__(self):
super().__init__()
self.setLayout(qtw.QVBoxLayout())
self.edit = qtw.QLineEdit()
self.submit=qtw.QPushButton('Submit',clicked=self.onSubmit)
self.layout().addWidget(self.edit)
self.layout().addWidget(self.submit)
self.show()
def onSubmit(self):
self.submitted.emit(self.edit.text())
self.close()
self.myDialog2 = slots.bbb()
if __name__ == '__main__':
app = qtw.QApplication(sys.argv)
mw = aaa()
sys.exit(app.exec())
Second file name: slots.py
from PyQt5 import QtWidgets as qtw
from PyQt5 import QtCore as qtc
import Signals
class bbb(qtw.QWidget,qtc.QThread):
#qtc.pyqtSlot()
def __init__(self):
super().__init__()
self.setLayout(qtw.QVBoxLayout())
self.label = qtw.QLabel(self)
self.x=Signals.aaa()
self.x.submitted.connect(self.label.setText)
print(self.label.text())
self.layout().addWidget(self.label)
self.show()
I do not know what documentation refers to the OP so I could not indicate if the tutorial you are following is correct or not. If you are referring to the official docs then you clearly have not followed it correctly.
Your code has many errors so I will only mention the most important ones:
The connection must be used before emitting the signal,
You should not inherit from QObject and QWidget since they will have conflicts, in addition to that there is no justification.
You shouldn't use pyqtSlot unnecessarily, setting it in the contstructor doesn't make sense.
You are creating a circular import.
"self.x" is not "mw" but another object.
A possible solution is the following:
from PyQt5 import QtWidgets as qtw
from PyQt5 import QtCore as qtc
class bbb(qtw.QWidget):
def __init__(self):
super().__init__()
lay = qtw.QVBoxLayout(self)
self.label = qtw.QLabel()
lay.addWidget(self.label)
import sys
from PyQt5 import QtWidgets as qtw
from PyQt5 import QtCore as qtc
import slots
class aaa(qtw.QWidget, qtc.QObject):
submitted = qtc.pyqtSignal(str)
def __init__(self):
super().__init__()
self.edit = qtw.QLineEdit()
self.submit = qtw.QPushButton("Submit", clicked=self.onSubmit)
lay = qtw.QVBoxLayout(self)
lay.addWidget(self.edit)
lay.addWidget(self.submit)
self.myDialog2 = slots.bbb()
self.submitted.connect(self.myDialog2.label.setText)
def onSubmit(self):
self.submitted.emit(self.edit.text())
self.close()
self.myDialog2.show()
if __name__ == "__main__":
app = qtw.QApplication(sys.argv)
mw = aaa()
mw.show()
sys.exit(app.exec())
PySide2(5.6.0~a1) Qt UI file loader returns an empty window whereare PyQt5 loader works fine. Could you explained to me where I am wrong.
Non Working PySide2 version:
import sys
from PySide2.QtWidgets import QDialog, QApplication
from PySide2 import QtUiTools
class AppWindow(QDialog):
def __init__(self):
super().__init__()
self.ui = QtUiTools.QUiLoader().load("dialog1.ui")
self.show()
app = QApplication(sys.argv)
w = AppWindow()
sys.exit(app.exec_())
Working PyQt5 version:
import sys
from PyQt5.QtWidgets import QDialog, QApplication
from PyQt5 import uic
class AppWindow(QDialog):
def __init__(self):
super().__init__()
self.ui = uic.loadUi("dialog1.ui", self)
self.show()
app = QApplication(sys.argv)
w = AppWindow()
sys.exit(app.exec_())
Using this function also does not work :
def loadUiWidget(uifilename, parent=None):
loader = QtUiTools.QUiLoader()
uifile = QtCore.QFile(uifilename)
uifile.open(QtCore.QFile.ReadOnly)
ui = loader.load(uifile, parent)
uifile.close()
return ui
In PySide2 there's no function to QMainWindow class overwrite itself. It's necessary to show the ui:
import sys
from PySide2.QtWidgets import QDialog, QApplication
from PySide2 import QtUiTools
class AppWindow(QDialog):
def __init__(self):
super().__init__()
self.ui = QtUiTools.QUiLoader().load("dialog1.ui")
self.ui.show()
app = QApplication(sys.argv)
w = AppWindow()
sys.exit(app.exec_())
QUiLoader().load() returns the widget as an object so if you assign it to a variable it will not do anything, you should use show():
import sys
from PySide2.QtWidgets import QApplication
from PySide2 import QtUiTools
app = QApplication(sys.argv)
w = QtUiTools.QUiLoader().load("dialog1.ui")
w.show()
sys.exit(app.exec_())
If you want to load QMainWindow from designer *.ui file you can use
import sys
from PySide2.QtWidgets import QApplication, QMainWindow
from PySide2.QtUiTools import QUiLoader
class MainWindow(QMainWindow):
def __init__(self):
super().__init__()
self.setCentralWidget(QUiLoader().load("form.ui"))
but slot-signal bindings, which are set in the designer in *.ui file, are not working anyway.
So, for full-function use of designer GUI and slot-signal bindings, the only way I found is to compile *.ui file to python module with pyside UI compiler:
pyside2-uic mainwindow.ui > ui_mainwindow.py
and then include produced ui_mainwindow. In this method the slot-signal pairs from Qt UI designer will work well.
import sys
from PySide2.QtWidgets import QApplication, QMainWindow
from ui_mainwindow import Ui_MainWindow
class MainWindow(QMainWindow, Ui_MainWindow):
def __init__(self):
super(MainWindow, self).__init__()
self.setupUi(self)
so I'm creating a simple windows application with Python and PyQt4. I've designed my UI the way I want it in QtCreator and I've created the necessary .py file from the .ui file. When I try to actually open an instance of the window however I'm given the following error:
AttributeError: 'Window' object has no attribute 'setCentralWidget'
So I go back into the ui_mainwindow.py file and comment out the following line:
MainWindow.setCentralWidget(self.centralWidget)
Now when I run main.py it will generate an instance of the window but it loses its grid layout and the UI elements just sort of float there. Any idea what I'm doing wrong?
My main.py file:
import sys
from PyQt4.QtGui import QApplication
from window import Window
if __name__ == "__main__":
app = QApplication(sys.argv)
window = Window()
window.show()
sys.exit(app.exec_())
and my window.py file:
from PyQt4.QtCore import Qt, SIGNAL
from PyQt4.QtGui import *
from ui_mainwindow import Ui_MainWindow
class Window(QWidget, Ui_MainWindow):
def __init__(self, parent = None):
QWidget.__init__(self, parent)
self.setupUi(self)
You need to inherit from QMainWindow, not QWidget. setCentralWidget is a method of QMainWindow.
from PyQt4.QtCore import Qt, SIGNAL
from PyQt4.QtGui import *
from ui_mainwindow import Ui_MainWindow
class Window(QMainWindow, Ui_MainWindow):
def __init__(self, parent = None):
QMainWindow.__init__(self, parent)
# or better
# super(Window, self).__init__(parent)
self.setupUi(self)