from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(9576, 698)
font = QtGui.QFont()
font.setFamily("Agency FB")
font.setPointSize(9)
MainWindow.setFont(font)
MainWindow.setFocusPolicy(QtCore.Qt.StrongFocus)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.verticalLayoutWidget = QtWidgets.QWidget(self.centralwidget)
self.verticalLayoutWidget.setGeometry(QtCore.QRect(20, 30, 221, 421))
self.verticalLayoutWidget.setObjectName("verticalLayoutWidget")
self.verticalLayout = QtWidgets.QVBoxLayout(self.verticalLayoutWidget)
self.verticalLayout.setContentsMargins(0, 0, 0, 0)
self.verticalLayout.setObjectName("verticalLayout")
self.RButton = QtWidgets.QRadioButton(self.verticalLayoutWidget)
font = QtGui.QFont()
font.setPointSize(20)
self.RButton.setFont(font)
self.RButton.setObjectName("RButton")
self.verticalLayout.addWidget(self.RButton)
self.RButton2 = QtWidgets.QRadioButton(self.verticalLayoutWidget)
font = QtGui.QFont()
font.setPointSize(20)
self.RButton2.setFont(font)
self.RButton2.setObjectName("RButton2")
self.verticalLayout.addWidget(self.RButton2)
self.RButton3 = QtWidgets.QRadioButton(self.verticalLayoutWidget)
font = QtGui.QFont()
font.setPointSize(20)
self.RButton3.setFont(font)
self.RButton3.setObjectName("RButton3")
self.verticalLayout.addWidget(self.RButton3)
self.Button = QtWidgets.QPushButton(self.centralwidget)
self.Button.setGeometry(QtCore.QRect(390, 150, 351, 221))
font = QtGui.QFont()
font.setFamily("Agency FB")
font.setPointSize(24)
self.Button.setFont(font)
self.Button.setFocusPolicy(QtCore.Qt.NoFocus)
self.Button.setAutoDefault(False)
self.Button.setObjectName("Button")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 957, 21))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.Button.clicked.connect(self.btn_clicked)
self.RButton.clicked.connect(self.btn_clicked)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def btn_clicked(self):
QMessageBox.about(self,"창","안녕")
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.RButton.setText(_translate("MainWindow", "버튼1"))
self.RButton2.setText(_translate("MainWindow", "버튼2"))
self.RButton3.setText(_translate("MainWindow", "버튼3"))
self.Button.setText(_translate("MainWindow", "확인"))
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
when button clicked program is turn off...
I need help
The problem is caused because QMessageBox.about() requires as a first parameter a widget but self, that is Ui_MainWindow, is not a widget. Qt Designer does not generate a widget but creates a class that fills a widget. It is also not recommended to modify the class generated by Qt Designer, it is appropriate to create a class that inherits from the appropriate widget and use the design class
class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self, *args, **kwargs):
QtWidgets.QMainWindow.__init__(self, *args, **kwargs)
self.setupUi(self)
self.Button.clicked.connect(self.btn_clicked)
self.RButton.clicked.connect(self.btn_clicked)
def btn_clicked(self):
QMessageBox.about(self,"창","안녕")
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
w = MainWindow()
w.show()
sys.exit(app.exec_())
Related
LOGIN.py
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_LOGIN_PAGE(object):
def setupUi(self, LOGIN_PAGE):
LOGIN_PAGE.setObjectName("LOGIN_PAGE")
LOGIN_PAGE.resize(1909, 995)
self.centralwidget = QtWidgets.QWidget(LOGIN_PAGE)
self.centralwidget.setObjectName("centralwidget")
self.frame = QtWidgets.QFrame(self.centralwidget)
self.frame.setGeometry(QtCore.QRect(690, 220, 501, 571))
font = QtGui.QFont()
font.setFamily("Cambria Math")
font.setPointSize(11)
self.frame.setFont(font)
self.frame.setStyleSheet("QFrame{\n""background:rgb(255, 250, 175);\n""border-radius:30px;\n"
"}\n""\n""QLineEdit{\n""border-radius:10px;\n""}\n""\n""QPushButton{\n""background:#03a9f4;\n"
"border-radius:10px;}")
self.frame.setFrameShape(QtWidgets.QFrame.StyledPanel)
self.frame.setFrameShadow(QtWidgets.QFrame.Raised)
self.frame.setObjectName("frame")
self.pushButton = QtWidgets.QPushButton(self.frame)
self.pushButton.setGeometry(QtCore.QRect(30, 360, 441, 81))
font = QtGui.QFont()
font.setFamily("Cambria")
font.setPointSize(14)
font.setBold(True)
font.setWeight(75)
self.pushButton.setFont(font)
self.pushButton.setObjectName("pushButton")
self.pushButton_2 = QtWidgets.QPushButton(self.frame)
self.pushButton_2.setGeometry(QtCore.QRect(130, 480, 241, 41))
font = QtGui.QFont()
font.setFamily("Gill Sans MT")
font.setPointSize(10)
self.pushButton_2.setFont(font)
self.pushButton_2.setObjectName("pushButton_2")
self.lineEdit = QtWidgets.QLineEdit(self.frame)
self.lineEdit.setGeometry(QtCore.QRect(30, 260, 441, 51))
font = QtGui.QFont()
font.setFamily("Cambria Math")
font.setPointSize(12)
self.lineEdit.setFont(font)
self.lineEdit.setText("")
self.lineEdit.setEchoMode(QtWidgets.QLineEdit.Password)
self.lineEdit.setObjectName("lineEdit")
self.lineEdit_2 = QtWidgets.QLineEdit(self.frame)
self.lineEdit_2.setGeometry(QtCore.QRect(30, 110, 441, 51))
font = QtGui.QFont()
font.setFamily("Cambria Math")
font.setPointSize(12)
self.lineEdit_2.setFont(font)
self.lineEdit_2.setText("")
self.lineEdit_2.setObjectName("lineEdit_2")
self.label = QtWidgets.QLabel(self.frame)
self.label.setGeometry(QtCore.QRect(40, 60, 231, 41))
font = QtGui.QFont()
font.setFamily("Cambria Math")
font.setPointSize(11)
self.label.setFont(font)
self.label.setObjectName("label")
self.label_2 = QtWidgets.QLabel(self.frame)
self.label_2.setGeometry(QtCore.QRect(40, 210, 231, 41))
font = QtGui.QFont()
font.setFamily("Cambria Math")
font.setPointSize(11)
self.label_2.setFont(font)
self.label_2.setObjectName("label_2")
LOGIN_PAGE.setCentralWidget(self.centralwidget)
self.statusbar = QtWidgets.QStatusBar(LOGIN_PAGE)
self.statusbar.setObjectName("statusbar")
LOGIN_PAGE.setStatusBar(self.statusbar)
self.retranslateUi(LOGIN_PAGE)
QtCore.QMetaObject.connectSlotsByName(LOGIN_PAGE)
def retranslateUi(self, LOGIN_PAGE):
_translate = QtCore.QCoreApplication.translate
LOGIN_PAGE.setWindowTitle(_translate("LOGIN_PAGE", "MainWindow"))
self.pushButton.setText(_translate("LOGIN_PAGE", "LOGIN"))
self.pushButton_2.setText(_translate("LOGIN_PAGE", "Forget Password"))
self.lineEdit.setPlaceholderText(_translate("LOGIN_PAGE", "PASSWORD"))
self.lineEdit_2.setPlaceholderText(_translate("LOGIN_PAGE", "USERNAME"))
self.label.setText(_translate("LOGIN_PAGE", "USERNAME :"))
self.label_2.setText(_translate("LOGIN_PAGE", "PASSWORD :"))
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
LOGIN_PAGE = QtWidgets.QMainWindow()
ui = Ui_LOGIN_PAGE()
ui.setupUi(LOGIN_PAGE)
LOGIN_PAGE.show()
sys.exit(app.exec_())
LOGINCLICK.py
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(505, 256)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.frame = QtWidgets.QFrame(self.centralwidget)
self.frame.setGeometry(QtCore.QRect(-1, -1, 501, 251))
self.frame.setStyleSheet("QFrame{\n""background:rgb(248, 255, 185);}\n""\n""QPushButton{\n"
"background:#03a9f4;\n""border-radius:10px;}")
self.frame.setFrameShape(QtWidgets.QFrame.StyledPanel)
self.frame.setFrameShadow(QtWidgets.QFrame.Raised)
self.frame.setObjectName("frame")
self.pushButton1 = QtWidgets.QPushButton(self.frame)
self.pushButton1.setGeometry(QtCore.QRect(70, 90, 151, 51))
self.pushButton1.setObjectName("pushButton1")
self.pushButton1_2 = QtWidgets.QPushButton(self.frame)
self.pushButton1_2.setGeometry(QtCore.QRect(280, 90, 151, 51))
self.pushButton1_2.setObjectName("pushButton1_2")
MainWindow.setCentralWidget(self.centralwidget)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.pushButton1.setText(_translate("MainWindow", "LOGIN"))
self.pushButton1_2.setText(_translate("MainWindow", "REGISTRATION"))
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
How to switch from LOGINCLICK.py to LOGIN.py by clicking a button?
First of all, and this is more a matter of concept, you're not going to "switch" between those files, but between the instances of the classes that are in those files.
Second, you should create a file that acts as a "main" script, which is the file that you'll actually run from python; this is a general rule for programs that use multiple files as "modules", and is almost mandatory for PyQt when using files generated by pyuic; note that you should also never modify the contents of those files, but import them as python modules (read more about using Designer).
Recreate the files with pyuic, then create a new file that will look like this:
from PyQt5 import QtWidgets
from LOGINCLICK import Ui_MainWindow
from LOGIN import Ui_LOGIN_PAGE
class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self):
super().__init__()
self.setupUi(self)
self.pushButton1.clicked.connect(self.showLogin)
def showLogin(self):
self.loginWindow = LoginWindow()
self.loginWindow.show()
class LoginWindow(QtWidgets.QMainWindow, Ui_LOGIN_PAGE):
def __init__(self):
super().__init__()
self.setupUi(self)
if __name__ == '__main__':
import sys
app = QtWidgets.QApplication(sys.argv)
mainWindow = MainWindow()
mainWindow.show()
sys.exit(app.exec_())
Now, some suggestions:
avoid fixed geometries in any case, and use layout managers instead (like QGridLayout, QHBoxLayout or QVBoxLayout) so that the contents of the windows will always adjust to the available size, otherwise some of the widgets might become unaccessible if the user resizes the window to a smaller size than you decided (there are also other reasons for this, but this is the most important);
don't use uppercase names for files or variables; read more about naming conventions in the Style Guide for Python Code;
a login window should probably be "modal" (shown over the current windows and avoiding interaction with them until the login window is closed); you can use a QDialog for this: from Designer create a new empty dialog, copy the elements of your current login form and paste them to the new dialog (or select all of them and use ctrl+drag), save and generate the file with pyuic, then change the above code considering the following modifications:
class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
#...
def showLogin(self):
self.loginWindow = LoginWindow(self)
self.loginWindow.exec_()
class LoginWindow(QtWidgets.QDialog, Ui_LOGIN_PAGE):
def __init__(self, parent=None):
super().__init__()
self.setupUi(self)
I'm trying to make my PyQt5 GUI in OOP way for example class for window and another for Pushbutton I'm really confiuse how to make it.Here is my code and my try to make pushbutton class.also my goal is to make classes for each of the items in the window
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
#making Pushbutton
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(180, 210, 93, 28))
self.pushButton.setStyleSheet("QPushButton::setCheckable(bool)")
self.pushButton.setObjectName("pushButton")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 26))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.pushButton.setText(_translate("MainWindow", "PushButton"))
# here I'm trying to make Buttom class
class Button(QtWidgets.QWidget):
def __init__(self, parent=None):
super(Button, self).__init__(parent)
# Main function
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
from Subclassing of QPushButton :
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Created on Sat Jun 6 16:21:24 2020
#author: Pietro
"""
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
#making Pushbutton
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(180, 210, 93, 28))
self.pushButton.setStyleSheet("QPushButton::setCheckable(bool)")
self.pushButton.setObjectName("pushButton")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 26))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
self.pippo=CustomButtonClass(self.centralwidget)
self.pippo.show()
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.pushButton.setText(_translate("MainWindow", "PushButton"))
# here I'm trying to make Buttom class
class CustomButtonClass(QtWidgets.QPushButton):
def __init__(self, *args, **kwargs):
QtWidgets.QPushButton.__init__(self,*args, **kwargs)
self.setGeometry(QtCore.QRect(280, 310, 93, 28))
self.setText('customized')
self.hide()
self.setStyleSheet("QPushButton{\n"
" background-color: #9de650;\n"
"}\n"
"\n"
"\n"
"QPushButton:hover{\n"
" background-color: green;\n"
"}\n"
"\n"
"")
# Main function
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
I'm newbie for using Pyqt5.
I use qtdesigner for building GUI.
I have MainWindow for passing value to dialogwindow
I want to LineEdit( in dialogwindow) show value after user input and click button (in MainWindow)
I try
self.ui = Ui_Dialog(self,data)
but it doesn't work
My code mainpage
MainWindow.py
from PyQt5 import QtCore, QtGui, QtWidgets
from dialog import Ui_Dialog
class Ui_MainWindow(object):
def openDialog(self):
data = self.lineEdit.text()
self.window = QtWidgets.QDialog()
self.ui = Ui_Dialog(self,data)
self.ui.setupUi(self.window)
# MainWindow.hide()
self.window.show()
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(505, 236)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.label = QtWidgets.QLabel(self.centralwidget)
self.label.setGeometry(QtCore.QRect(120, 40, 91, 16))
self.label.setObjectName("label")
self.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
self.lineEdit.setGeometry(QtCore.QRect(290, 40, 113, 22))
self.lineEdit.setObjectName("lineEdit")
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(190, 110, 93, 28))
self.pushButton.clicked.connect(self.openDialog)
self.pushButton.setObjectName("pushButton")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 505, 26))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.label.setText(_translate("MainWindow", "Passing Value"))
self.pushButton.setText(_translate("MainWindow", "Send"))
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
Dialog code.py
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_Dialog(object):
def setupUi(self, Dialog):
Dialog.setObjectName("Dialog")
Dialog.resize(577, 253)
self.lineEdit = QtWidgets.QLineEdit(Dialog)
self.lineEdit.setGeometry(QtCore.QRect(260, 100, 113, 22))
self.lineEdit.setObjectName("lineEdit")
self.label = QtWidgets.QLabel(Dialog)
self.label.setGeometry(QtCore.QRect(180, 100, 55, 16))
self.label.setObjectName("label")
self.retranslateUi(Dialog)
QtCore.QMetaObject.connectSlotsByName(Dialog)
def retranslateUi(self, Dialog):
_translate = QtCore.QCoreApplication.translate
Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
self.label.setText(_translate("Dialog", "Value"))
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
Dialog = QtWidgets.QDialog()
ui = Ui_Dialog()
ui.setupUi(Dialog)
Dialog.show()
sys.exit(app.exec_())
advice me plz
Thank you,
Mint
PyQt recommends not modifying the .py generated by pyuic and Qt Designer but creating another file that uses that class to fill a widget so I recommend regenerating the MainWindow.py and dialog.py files.
Now create a main.py where we inherit the appropriate class by setting a constructor with the requirement:
main.py
from PyQt5 import QtCore, QtGui, QtWidgets
from dialog import Ui_Dialog
from MainWindow import Ui_MainWindow
class Dialog(QtWidgets.QDialog, Ui_Dialog):
def __init__(self, text, parent=None):
super(Dialog, self).__init__(parent)
self.setupUi(self)
self.lineEdit.setText(text)
class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.setupUi(self)
self.pushButton.clicked.connect(self.openDialog)
def openDialog(self):
data = self.lineEdit.text()
w = Dialog(data)
w.exec_()
if __name__ == '__main__':
import sys
app = QtWidgets.QApplication(sys.argv)
w = MainWindow()
w.show()
sys.exit(app.exec_())
I use pyqtgraph to plot in PyQt5 GUI. I can plot in a pop-up window, but I am trying embed the graph in the graphicsView area.
Here is how I can do a simple plot in a new window:
self.pushButton.clicked.connect(self.btn_clk)
MainWindow.show()
def btn_clk(self):
L = [1,2,3,4,5]
pg.plot(L)
I tried to use this line to embed the plot, but it doesn't work:
self.pushButton.clicked.connect(self.btn_clk)
MainWindow.show()
def btn_clk(self):
L = [1,2,3,4,5]
self.graphicsView.plot(L)
Here is the full code:
import pyqtgraph as pg
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(662, 512)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.horizontalLayout = QtWidgets.QHBoxLayout(self.centralwidget)
self.horizontalLayout.setObjectName("horizontalLayout")
self.verticalLayout = QtWidgets.QVBoxLayout()
self.verticalLayout.setObjectName("verticalLayout")
self.lineEdit = QtWidgets.QLineEdit(self.centralwidget)
self.lineEdit.setObjectName("lineEdit")
self.verticalLayout.addWidget(self.lineEdit)
self.graphicsView = QtWidgets.QGraphicsView(self.centralwidget)
self.graphicsView.setObjectName("graphicsView")
self.verticalLayout.addWidget(self.graphicsView)
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setObjectName("pushButton")
self.verticalLayout.addWidget(self.pushButton)
self.horizontalLayout.addLayout(self.verticalLayout)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 662, 21))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtWidgets.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.pushButton.setText(_translate("MainWindow", "PushButton"))
self.pushButton.clicked.connect(self.btn_clk)
MainWindow.show()
def btn_clk(self):
L = [1,2,3,4,5]
pg.plot(L)#this line plots in a new window
self.graphicsView.plot(L)#this line doesn't work
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
Pg.plot returns an instance of the pg.graphicsWindows.PlotWindow class, and this class inherits from QGraphicsView, ie pg.graphicsWindows.PlotWindow is used to plot but QGraphicsView is not. If you want to embed a plot within the Widget you must use the class pg.PlotWidget(), you must change:
self.graphicsView = QtWidgets.QGraphicsView(self.centralwidget)
to:
self.graphicsView = pg.PlotWidget(self.centralwidget)
and:
def btn_clk(self):
L = [1,2,3,4,5]
self.graphicsView.plot(L)#this line doesn't work
Output:
I wrote a small PyQt program based on an example from a book. I edited the code to add some niceties. Below is my code:
from __future__ import division
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
import sys
class Ui_MainWindow(QWidget):
def __init__(self):
QWidget.__init__(self)
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.verticalLayoutWidget = QtWidgets.QWidget(self.centralwidget)
self.verticalLayoutWidget.setGeometry(QtCore.QRect(9, 9, 781, 461))
self.verticalLayoutWidget.setObjectName("verticalLayoutWidget")
self.verticalLayout = QtWidgets.QVBoxLayout(self.verticalLayoutWidget)
self.verticalLayout.setObjectName("verticalLayout")
self.textBrowser = QtWidgets.QTextBrowser(self.verticalLayoutWidget)
self.textBrowser.setObjectName("textBrowser")
self.verticalLayout.addWidget(self.textBrowser)
self.horizontalLayoutWidget = QtWidgets.QWidget(self.centralwidget)
self.horizontalLayoutWidget.setGeometry(QtCore.QRect(10, 480, 781, 80))
self.horizontalLayoutWidget.setObjectName("horizontalLayoutWidget")
self.horizontalLayout_2 = QtWidgets.QHBoxLayout(self.horizontalLayoutWidget)
self.horizontalLayout_2.setObjectName("horizontalLayout_2")
self.label = QtWidgets.QLabel(self.horizontalLayoutWidget)
font = QtGui.QFont()
font.setPointSize(16)
self.label.setFont(font)
self.label.setObjectName("label")
self.horizontalLayout_2.addWidget(self.label)
self.lineEdit = QtWidgets.QLineEdit(self.horizontalLayoutWidget)
self.lineEdit.setBaseSize(QtCore.QSize(0, 0))
font = QtGui.QFont()
font.setPointSize(12)
self.lineEdit.setFont(font)
self.lineEdit.setText("")
self.lineEdit.setObjectName("lineEdit")
self.horizontalLayout_2.addWidget(self.lineEdit)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 800, 21))
self.menubar.setObjectName("menubar")
self.menuFile = QtWidgets.QMenu(self.menubar)
self.menuFile.setObjectName("menuFile")
MainWindow.setMenuBar(self.menubar)
self.actionQuit = QtWidgets.QAction(MainWindow)
self.actionQuit.setObjectName("actionQuit")
self.menuFile.addAction(self.actionQuit)
self.menubar.addAction(self.menuFile.menuAction())
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.label.setText(_translate("MainWindow", "Expression:"))
self.menuFile.setTitle(_translate("MainWindow", "File"))
self.actionQuit.setText(_translate("MainWindow", "Quit (Ctrl+Q)"))
self.actionQuit.setShortcut(_translate("MainWindow", "Ctrl+Q"))
self.lineEdit.setFocus()
self.connect(self.lineEdit, self.updateUi)
self.setWindowTitle("Calculate")
def updateUi(self):
try:
text = unicode(self.lineEdit.text())
self.browser.append("%s = <b>%s</b>" % (text,eval(text)))
except:
self.browser.append("<font color=red>Invalid Expression</font>")
if __name__ == '__main__':
app = QApplication(sys.argv)
window = Ui_MainWindow()
window.show()
sys.exit(app.exec_())
Output:
But when I execute this file I only get a blank window without any widgets inside it. What is the error in my code?
You defined setupUi() function but I don't see you executing it anywhere. You should expand your __init__ with:
class Ui_MainWindow(QWidget):
def __init__(self):
QWidget.__init__(self)
self.setupUi(your_main_window)