import sys
from PyQt4 import QtCore, QtGui, uic
from PyQt4.QtGui import *
from PyQt4.QtCore import *
import time
import datetime
import re
import random
import csv
from CropClass import *
from Wheat_class import *
from Potato_class import *
win1 = uic.loadUiType("MenuScreen.ui")[0]
win2 = uic.loadUiType("WheatScreen.ui")[0]
win3 = uic.loadUiType("PotatoScreen.ui") [0]
class MenuScreen(QtGui.QMainWindow, win1):
def __init__(self, parent=None):
QtGui.QMainWindow.__init__(self, parent)
self.setupUi(self)
self.BtnCreateSimulation.clicked.connect(self.changeSimulation)
def changeSimulation(self):
if self.RdoWheat.isChecked() ==True:
print("Wheat is picked")
new_crop=Wheat()
self.wheatSimulation()
elif self.RdoPotato.isChecked() == True:
print("Potato is picked")
new_crop = Potato()
self.PotatoSimulation()
def wheatSimulation(self):
print("Hello")
self.hide()
WheatWindow.show()
def PotatoSimulation(self):
self.hide()
PotatoWindow.show()
class PotatoScreen(QtGui.QMainWindow, win3):
def __init__(self, parent=None):
QtGui.QMainWindow.__init__(self, parent)
self.setupUi(self)
self.BtnBacktoMenu.clicked.connect(self.BackToMain)
def BackToMain(self):
self.hide()
MenuWindow.show()
class WheatScreen(QtGui.QMainWindow, win2):
def __init__(self, parent=None):
QtGui.QMainWindow.__init__(self, parent)
self.setupUi(self)
new_crop = Wheat()
self.BtnBacktoMenu.clicked.connect(self.BackToMain)
self.BtnManual.clicked.connect(self.ManualCalculate)
def BackToMain(self):
self.hide()
MenuWindow.show()
def ManualCalculate(self):
water = self.spBoxWater.value()
light= self.spBoxLight.value()
print("water", water, "light", light)
def main():
app = QtGui.QApplication(sys.argv)
WheatWindow = WheatScreen(None)
PotatoWindow = PotatoScreen(None)
MenuWindow = MenuScreen(None)
MenuWindow.show()
app.exec_()
if __name__ == "__main__":
main()
I have created a program in Python which simulates the growth rates of crops. The user is able to chose between the crop is wheat or potatoes I am trying to create a GUI using PYQT. The problem I am having is that when I try and load the program the program is not recognizing the other screen layouts. The main function should be setting up the screen layouts
Related
I'm trying to create a very simple QWizard (actually as part of the process to create a min reproducible example for a different error). What I want to be able to do is to access the QWizardPage's parent, i.e. using the .wizard() call.
Here is the code:
from PyQt6.QtCore import *
from PyQt6.QtWidgets import *
from PyQt6.QtGui import *
import sys
class MagicWizard(QWizard):
def __init__(self, parent=None):
super(MagicWizard, self).__init__(parent)
self.addPage(Page1(self))
self.setWindowTitle("PyQt5 Wizard Example - based on pythonspot.com example")
self.resize(640,480)
class Page1(QWizardPage):
def __init__(self, parent=None):
super(Page1, self).__init__(parent)
self.myLabel = QLabel("Testing registered fields")
layout = QVBoxLayout()
layout.addWidget(self.myLabel)
self.setLayout(layout)
print(self.wizard())
print(self.parent())
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
wizard = MagicWizard()
wizard.show()
sys.exit(app.exec())
This loads correctly and the console logs:
None
<__main__.MagicWizard object at 0x101693790>
The first line is the call to self.wizard() which I was expecting would be the same as self.parent(). I can obviously use .parent() and it will work but I understood that .wizard() was the correct way to go.
As per guidance from #musicamante I've changed to move the wizard() call out of the constructor where it (obviously) will not work. It now looks like this and works fine.
from PyQt6.QtCore import *
from PyQt6.QtWidgets import *
from PyQt6.QtGui import *
import sys
class MagicWizard(QWizard):
def __init__(self, parent=None):
super(MagicWizard, self).__init__(parent)
self.addPage(Page1(self))
self.setWindowTitle("PyQt5 Wizard Example - based on pythonspot.com example")
self.resize(640,480)
class Page1(QWizardPage):
def __init__(self, parent=None):
super(Page1, self).__init__(parent)
self.myLabel = QLabel("Testing registered fields")
layout = QVBoxLayout()
layout.addWidget(self.myLabel)
self.setLayout(layout)
def initializePage(self):
print(self.wizard())
def button_push(self):
print(self.wizard())
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
wizard = MagicWizard()
wizard.show()
sys.exit(app.exec())
When i'm closing window, pushButtons don't connecting
I want window to be open, when first is closed
But pushButtons don't connecting
It is test.py
import sys
import sqlite3
from PyQt5.QtWidgets import QWidget, QApplication, QLabel, QMainWindow
from easter import Ui_Form
from window_3 import App_2
class App(QMainWindow):
def __init__(self):
super().__init__()
self.setWindowTitle("Test")
self.show()
def closeEvent(self, event):
Example().__init__()
class Example(QMainWindow, Ui_Form):
def __init__(self):
super().__init__()
self.setupUi(self)
# It is don't working
self.buttonGroup.buttonClicked.connect(self.add)
self.show()
def add(self, sender):
# It doesn't matter
con = sqlite3.connect("top.db")
cur = con.cursor()
idd = list(cur.execute("select id from Top").fetchall())
a = cur.execute('update top set score = ? where id = ?', (int(sender.text()), idd[-1][0]))
con.commit()
App_2().__init__()
self.close()
First of all, similar questions have been answered before, yet I need some help with this one.
I have a window which contains one button (Class First) and I want on pressed, a second blank window to be appeared (Class Second).
I fiddled with the code copied from this question: PyQT on click open new window, and I wrote this code:
# -*- coding: utf-8 -*-
from PyQt4 import QtGui, QtCore
import sys
import design1, design2
class Second(QtGui.QMainWindow, design2.Ui_MainWindow):
def __init__(self, parent=None):
super(Second, self).__init__(parent)
self.setupUi(self)
class First(QtGui.QMainWindow, design1.Ui_MainWindow):
def __init__(self, parent=None):
super(First, self).__init__(parent)
self.setupUi(self)
self.pushButton.clicked.connect(self.on_pushButton_clicked)
self.dialog = Second(self)
def on_pushButton_clicked(self):
self.dialog.exec_()
def main():
app = QtGui.QApplication(sys.argv)
main = First()
main.show()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
but on_pressed, this error message appears:
AttributeError: 'Second' object has no attribute 'exec_'
(design1 and design2 have been derived from the Qt designer.)
Any thought would be appreciated.
Here I'm using the show method.
Here is a working example (derived from yours):
#!/usr/bin/env python
# -*- coding: utf-8 -*-
from PyQt4 import QtGui, QtCore
import sys
class Second(QtGui.QMainWindow):
def __init__(self, parent=None):
super(Second, self).__init__(parent)
class First(QtGui.QMainWindow):
def __init__(self, parent=None):
super(First, self).__init__(parent)
self.pushButton = QtGui.QPushButton("click me")
self.setCentralWidget(self.pushButton)
self.pushButton.clicked.connect(self.on_pushButton_clicked)
self.dialog = Second(self)
def on_pushButton_clicked(self):
self.dialog.show()
def main():
app = QtGui.QApplication(sys.argv)
main = First()
main.show()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
If you need a new window every time you click the button, you can change the code that the dialog is created inside the on_pushButton_clicked method, like so:
#!/usr/bin/env python
# -*- coding: utf-8 -*-
from PyQt4 import QtGui, QtCore
import sys
class Second(QtGui.QMainWindow):
def __init__(self, parent=None):
super(Second, self).__init__(parent)
class First(QtGui.QMainWindow):
def __init__(self, parent=None):
super(First, self).__init__(parent)
self.pushButton = QtGui.QPushButton("click me")
self.setCentralWidget(self.pushButton)
self.pushButton.clicked.connect(self.on_pushButton_clicked)
self.dialogs = list()
def on_pushButton_clicked(self):
dialog = Second(self)
self.dialogs.append(dialog)
dialog.show()
def main():
app = QtGui.QApplication(sys.argv)
main = First()
main.show()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
i'm new in Python and PyQt4.
I want to ask "How to back to previous Window ?"
i have 2 file in here, file 'login' and 'signup'
here file login.py
import sys
from PyQt4.QtGui import QWidget, QPushButton, QLineEdit, QLabel, \
QApplication, QGridLayout
from signup import SignUp
class Login(QWidget):
def __init__(self):
super(Login, self).__init__()
self.setWindowTitle("Login")
self.login_window()
def login_window(self):
self.login_layout = QGridLayout()
self.login_button = QPushButton("Login")
self.signup_button = QPushButton("Sign Up")
self.login_layout.addWidget(self.login_button, 2, 0)
self.login_layout.addWidget(self.signup_button, 2, 1)
self.signup_button.clicked.connect(self.signup_show)
self.setLayout(self.login_layout)
self.show()
def signup_show(self):
self.signupshow = SignUp()
self.hide()
self.signupshow.show()
def check_signup(self):
SignUp.check_signup()
self.show()
def main():
app = QApplication(sys.argv)
login = Login()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
and here is signup.py
import sys
from PyQt4.QtGui import QWidget, QPushButton, QLineEdit, QLabel, \
QApplication, QGridLayout
class SignUp(QWidget):
def __init__(self):
super(SignUp, self).__init__()
self.setWindowTitle("Sign Up")
self.signup_window()
def signup_window(self):
self.signup_layout = QGridLayout()
self.signup_button = QPushButton("Sign Up")
self.signup_layout.addWidget(self.signup_button, 2, 0, 1, 0)
self.signup_button.clicked.connect(self.check_signup)
self.setLayout(self.signup_layout)
self.show()
def check_signup(self):
self.close()
def main():
app = QApplication(sys.argv)
signup = SignUp()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
my problem is, when i push button signup from signup.py, it's close but window Login is not show.
i think i don't have any trigger in signup.py for check_signup in login.py
in this code, i delete some Line Edit and Label. I think it's not a problem.
i hope someone will help, Thank you before :)
and if you answer this questtion, i hope you will explain a little bit of the logic, thank you again :)
I'm not really sure what you are trying to achieve (your description is kind of confusing), but let's start here. I put all your code in one file, since you need to import each other (which leads to cyclic import). Then, I just added these two lines
self.login = Login()
self.login.show()
into check_signup method of SignUp class, which pops-up Login window. If this is not your desired result, please let us know and provide us a better description. The code follows:
import sys
from PyQt4.QtGui import QWidget, QPushButton, QLineEdit, QLabel, \
QApplication, QGridLayout
class Login(QWidget):
def __init__(self):
super(Login, self).__init__()
self.setWindowTitle("Login")
self.login_window()
def login_window(self):
self.login_layout = QGridLayout()
self.login_button = QPushButton("Login")
self.signup_button = QPushButton("Sign Up")
self.login_layout.addWidget(self.login_button, 2, 0)
self.login_layout.addWidget(self.signup_button, 2, 1)
self.signup_button.clicked.connect(self.signup_show)
self.setLayout(self.login_layout)
self.show()
def signup_show(self):
self.signupshow = SignUp()
self.hide()
self.signupshow.show()
def check_signup(self):
SignUp.check_signup()
self.show()
class SignUp(QWidget):
def __init__(self):
super(SignUp, self).__init__()
self.setWindowTitle("Sign Up")
self.signup_window()
def signup_window(self):
self.signup_layout = QGridLayout()
self.signup_button = QPushButton("Sign Up")
self.signup_layout.addWidget(self.signup_button, 2, 0, 1, 0)
self.signup_button.clicked.connect(self.check_signup)
self.setLayout(self.signup_layout)
self.show()
def check_signup(self):
self.login = Login()
self.login.show()
self.close()
def main():
app = QApplication(sys.argv)
signup = SignUp()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
You should rather use signal-slot connections:
import sys
from PyQt4 import QtGui, QtCore
class WidgetA(QtGui.QWidget):
open_b = QtCore.pyqtSignal()
def __init__(self, parent=None):
super(WidgetA, self).__init__(parent)
self.resize(100, 100)
self.l = QtGui.QVBoxLayout()
self.close_btn = QtGui.QPushButton('Close')
self.b_btn = QtGui.QPushButton('Open B')
self.b_btn.clicked.connect(self.b_btn_clicked)
self.l.addWidget(self.close_btn)
self.l.addWidget(self.b_btn)
self.setLayout(self.l)
def b_btn_clicked(self):
self.open_b.emit()
self.hide()
class WidgetB(QtGui.QWidget):
open_a = QtCore.pyqtSignal()
def __init__(self, parent=None):
super(WidgetB, self).__init__(parent)
self.resize(100, 100)
self.l = QtGui.QVBoxLayout()
self.close_btn = QtGui.QPushButton('Close')
self.close_btn.clicked.connect(self.hide)
self.a_btn = QtGui.QPushButton('Open A')
self.a_btn.clicked.connect(self.a_btn_clicked)
self.l.addWidget(self.close_btn)
self.l.addWidget(self.a_btn)
self.setLayout(self.l)
def a_btn_clicked(self):
self.open_a.emit()
self.hide()
def main():
app = QtGui.QApplication(sys.argv)
a = WidgetA()
b = WidgetB()
a.open_b.connect(lambda: b.show())
b.open_a.connect(lambda: a.show())
a.show()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
I am new to both pyqt and python so I'm sure that my question would seem stupid, so thank you for reading and answer it. It is really helpful.
Here is my source code
# -*- coding: utf-8 -*-
from PyQt4.QtGui import *
from PyQt4.QtCore import *
import sys
QTextCodec.setCodecForTr(QTextCodec.codecForName("utf8"))
class Prog(QDialog):
def __init__(self,parent=None):
super(Prog,self).__init__(parent)
self.start_P()
def start_P(self):
progressDialog=QProgressDialog(self)
progressDialog.setWindowModality(Qt.WindowModal)
progressDialog.setMinimumDuration(5)
progressDialog.setWindowTitle(self.tr("请等待"))
progressDialog.setLabelText(self.tr("拷贝..."))
progressDialog.setCancelButtonText(self.tr("取消"))
progressDialog.setRange(0,100)
progressDialog.setAutoClose(True)
for i in range(101):
progressDialog.setValue(i)
QThread.msleep(10)
if progressDialog.wasCanceled():
return
self.connect(progressDialog,SIGNAL("closed()"))
def main():
app = QApplication(sys.argv)
pp = Prog()
pp.show()
app.exec_()
if __name__ == '__main__':
main()
There are some Chinese characters, but it's irrelevant. The strange part is when I execute this program I would get a window of progress dialog, that is what I want. But when it is auto closed a pythonw window generated automatically.
I was curious about why this pythonw window was generated and want to know how to avoid it.
That's because you are creating your QProgressDialog as child of a QDialog, checkout the line that says progressDialog=QProgressDialog(self). Checkout how this example works:
#!/usr/bin/env python
#-*- coding:utf-8 -*-
#---------
# IMPORT
#---------
from PyQt4 import QtGui, QtCore
#---------
# MAIN
#---------
class MyThread(QtCore.QThread):
progress = QtCore.pyqtSignal(int)
_stopped = False
def __init__(self, parent=None):
super(MyThread, self).__init__(parent)
def stop(self):
self._stopped = True
def start(self):
self._stopped = False
super(MyThread, self).start()
def run(self):
for progressNumber in range(101):
self.progress.emit(progressNumber)
self.msleep(22)
if self._stopped:
return
class MyWindow(QtGui.QProgressDialog):
def __init__(self, parent=None):
super(MyWindow, self).__init__(parent)
self.threadProgress = MyThread(self)
self.threadProgress.progress.connect(self.setValue)
def stop(self):
self.threadProgress.stop()
def start(self):
self.threadProgress.start()
def hideEvent(self, event):
self.close()
if __name__ == "__main__":
import sys
codec = QtCore.QTextCodec.codecForName("utf8")
QtCore.QTextCodec.setCodecForTr(codec)
app = QtGui.QApplication(sys.argv)
app.setApplicationName('MyWindow')
main = MyWindow()
main.setWindowTitle(main.tr("请等待"))
main.setLabelText(main.tr("拷贝..."))
main.setCancelButtonText(main.tr("取消"))
main.setRange(0,100)
main.canceled.connect(main.stop)
main.show()
main.start()
sys.exit(app.exec_())