i have created a main window with a table, and two buttons, and i also have created a dialog window, with a label, a line edit for user input, and two buttons..
I would like the dialog to pop up once one button in the main window is pressed, take the input the user gives, and after he presses "accept" in the dialog, i want the dialog to close and get back to the main window how would i do that?
Main menu:
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(670, 492)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.verticalLayout = QtWidgets.QVBoxLayout(self.centralwidget)
self.verticalLayout.setObjectName("verticalLayout")
self.horizontalLayout_2 = QtWidgets.QHBoxLayout()
self.horizontalLayout_2.setObjectName("horizontalLayout_2")
self.tableWidget = QtWidgets.QTableWidget(self.centralwidget)
self.tableWidget.setObjectName("tableWidget")
self.tableWidget.setColumnCount(3)
self.tableWidget.setRowCount(0)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(0, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(1, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(2, item)
self.horizontalLayout_2.addWidget(self.tableWidget)
self.verticalLayout.addLayout(self.horizontalLayout_2)
self.horizontalLayout = QtWidgets.QHBoxLayout()
self.horizontalLayout.setObjectName("horizontalLayout")
self.firstbutton = QtWidgets.QPushButton(self.centralwidget)
self.firstbutton.setObjectName("firstbutton")
self.horizontalLayout.addWidget(self.firstbutton)
self.secondbutton = QtWidgets.QPushButton(self.centralwidget)
self.secondbutton.setObjectName("secondbutton")
self.horizontalLayout.addWidget(self.secondbutton)
self.verticalLayout.addLayout(self.horizontalLayout)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 670, 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"))
item = self.tableWidget.horizontalHeaderItem(0)
item.setText(_translate("MainWindow", "First column"))
item = self.tableWidget.horizontalHeaderItem(1)
item.setText(_translate("MainWindow", "Second column"))
item = self.tableWidget.horizontalHeaderItem(2)
item.setText(_translate("MainWindow", "Third"))
self.firstbutton.setText(_translate("MainWindow", "Add"))
self.secondbutton.setText(_translate("MainWindow", "Delete"))
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:
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'dialog.ui'
#
# Created by: PyQt5 UI code generator 5.4.1
#
# WARNING! All changes made in this file will be lost!
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_Dialog(object):
def setupUi(self, Dialog):
Dialog.setObjectName("Dialog")
Dialog.resize(358, 126)
self.verticalLayout = QtWidgets.QVBoxLayout(Dialog)
self.verticalLayout.setObjectName("verticalLayout")
self.horizontalLayout_3 = QtWidgets.QHBoxLayout()
self.horizontalLayout_3.setObjectName("horizontalLayout_3")
self.dialoglabel = QtWidgets.QLabel(Dialog)
self.dialoglabel.setObjectName("dialoglabel")
self.horizontalLayout_3.addWidget(self.dialoglabel)
self.verticalLayout.addLayout(self.horizontalLayout_3)
self.horizontalLayout_2 = QtWidgets.QHBoxLayout()
self.horizontalLayout_2.setObjectName("horizontalLayout_2")
self.dialoglineedit = QtWidgets.QLineEdit(Dialog)
self.dialoglineedit.setObjectName("dialoglineedit")
self.horizontalLayout_2.addWidget(self.dialoglineedit)
self.verticalLayout.addLayout(self.horizontalLayout_2)
self.horizontalLayout = QtWidgets.QHBoxLayout()
self.horizontalLayout.setObjectName("horizontalLayout")
self.pushButton_2 = QtWidgets.QPushButton(Dialog)
self.pushButton_2.setObjectName("pushButton_2")
self.horizontalLayout.addWidget(self.pushButton_2)
self.pushButton = QtWidgets.QPushButton(Dialog)
self.pushButton.setObjectName("pushButton")
self.horizontalLayout.addWidget(self.pushButton)
self.verticalLayout.addLayout(self.horizontalLayout)
self.retranslateUi(Dialog)
QtCore.QMetaObject.connectSlotsByName(Dialog)
def retranslateUi(self, Dialog):
_translate = QtCore.QCoreApplication.translate
Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
self.dialoglabel.setText(_translate("Dialog", "dialoglabel"))
self.pushButton_2.setText(_translate("Dialog", "Acept"))
self.pushButton.setText(_translate("Dialog", "Cancel"))
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_())
Ahh, I just looked at this for a PyQt5 course I am developing. First you will need to import the form.
from dialog import Ui_Dialog as Form
and Then create a function that will open the dialog:
def open_dialog(self):
dialog = QtWidgets.QDialog()
dialog.ui = Form()
dialog.ui.setupUi(dialog)
dialog.exec_()
dialog.show()
which I will connect to your first button:
self.firstbutton.clicked.connect(self.open_dialog)
In the dialog.py, you can get rid of these lines:
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_())
They are only needed if you are invoking the dialog directly. To be a bit clearer, __name__ != "__main__"
Ok, so in dialog.py, I will create 2 new functions and assign them to buttons.
# 2 sample functions
def return_accept(self):
print("yes")
def return_cancel(self):
print("no")
and bind these events to the buttons:
# connect the two functions
self.pushButton.clicked.connect(self.return_yes)
self.pushButton_2.clicked.connect(self.return_no)
Completed Code
app.py
from PyQt5 import QtCore, QtGui, QtWidgets
from dialog import Ui_Dialog as Form
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(670, 492)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.verticalLayout = QtWidgets.QVBoxLayout(self.centralwidget)
self.verticalLayout.setObjectName("verticalLayout")
self.horizontalLayout_2 = QtWidgets.QHBoxLayout()
self.horizontalLayout_2.setObjectName("horizontalLayout_2")
self.tableWidget = QtWidgets.QTableWidget(self.centralwidget)
self.tableWidget.setObjectName("tableWidget")
self.tableWidget.setColumnCount(3)
self.tableWidget.setRowCount(0)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(0, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(1, item)
item = QtWidgets.QTableWidgetItem()
self.tableWidget.setHorizontalHeaderItem(2, item)
self.horizontalLayout_2.addWidget(self.tableWidget)
self.verticalLayout.addLayout(self.horizontalLayout_2)
self.horizontalLayout = QtWidgets.QHBoxLayout()
self.horizontalLayout.setObjectName("horizontalLayout")
self.firstbutton = QtWidgets.QPushButton(self.centralwidget)
self.firstbutton.setObjectName("firstbutton")
self.horizontalLayout.addWidget(self.firstbutton)
self.secondbutton = QtWidgets.QPushButton(self.centralwidget)
self.secondbutton.setObjectName("secondbutton")
self.horizontalLayout.addWidget(self.secondbutton)
self.verticalLayout.addLayout(self.horizontalLayout)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 670, 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)
self.firstbutton.clicked.connect(self.open_dialog)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
item = self.tableWidget.horizontalHeaderItem(0)
item.setText(_translate("MainWindow", "First column"))
item = self.tableWidget.horizontalHeaderItem(1)
item.setText(_translate("MainWindow", "Second column"))
item = self.tableWidget.horizontalHeaderItem(2)
item.setText(_translate("MainWindow", "Third"))
self.firstbutton.setText(_translate("MainWindow", "Add"))
self.secondbutton.setText(_translate("MainWindow", "Delete"))
def open_dialog(self):
dialog = QtWidgets.QDialog()
dialog.ui = Form()
dialog.ui.setupUi(dialog)
dialog.exec_()
dialog.show()
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.py
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_Dialog(object):
def setupUi(self, Dialog):
Dialog.setObjectName("Dialog")
Dialog.resize(358, 126)
self.verticalLayout = QtWidgets.QVBoxLayout(Dialog)
self.verticalLayout.setObjectName("verticalLayout")
self.horizontalLayout_3 = QtWidgets.QHBoxLayout()
self.horizontalLayout_3.setObjectName("horizontalLayout_3")
self.dialoglabel = QtWidgets.QLabel(Dialog)
self.dialoglabel.setObjectName("dialoglabel")
self.horizontalLayout_3.addWidget(self.dialoglabel)
self.verticalLayout.addLayout(self.horizontalLayout_3)
self.horizontalLayout_2 = QtWidgets.QHBoxLayout()
self.horizontalLayout_2.setObjectName("horizontalLayout_2")
self.dialoglineedit = QtWidgets.QLineEdit(Dialog)
self.dialoglineedit.setObjectName("dialoglineedit")
self.horizontalLayout_2.addWidget(self.dialoglineedit)
self.verticalLayout.addLayout(self.horizontalLayout_2)
self.horizontalLayout = QtWidgets.QHBoxLayout()
self.horizontalLayout.setObjectName("horizontalLayout")
self.pushButton_2 = QtWidgets.QPushButton(Dialog)
self.pushButton_2.setObjectName("pushButton_2")
self.horizontalLayout.addWidget(self.pushButton_2)
self.pushButton = QtWidgets.QPushButton(Dialog)
self.pushButton.setObjectName("pushButton")
self.horizontalLayout.addWidget(self.pushButton)
self.verticalLayout.addLayout(self.horizontalLayout)
self.retranslateUi(Dialog)
QtCore.QMetaObject.connectSlotsByName(Dialog)
# connect the two functions
self.pushButton.clicked.connect(self.return_yes)
self.pushButton_2.clicked.connect(self.return_no)
def retranslateUi(self, Dialog):
_translate = QtCore.QCoreApplication.translate
Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
self.dialoglabel.setText(_translate("Dialog", "dialoglabel"))
self.pushButton_2.setText(_translate("Dialog", "Acept"))
self.pushButton.setText(_translate("Dialog", "Cancel"))
# 2 sample functions
def return_accept(self):
print("yes")
def return_cancel(self):
print("no")
Thanks for the help, but I think you mixed the function up.
You call: self.pushButton.clicked.connect(self.return_yes)
but defined is:
2 sample functions
def return_accept(self):
print("yes")
Related
How to send data to thread is running by pyqt as the code below?
I think it would be using pyqtslot, but I don't know how to use.
I'm trying to use the pyqt qthread for multithreading program.
In the code, there are two different workers instance. I try to use signal and slot for data share. but it seemed that the signal is blocked until one of the qthread is finished.
this is the code.
gui.py
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(641, 204)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.Button_start_1 = QtWidgets.QPushButton(self.centralwidget)
self.Button_start_1.setGeometry(QtCore.QRect(30, 20, 81, 41))
self.Button_start_1.setObjectName("Button_start_1")
self.Button_start_2 = QtWidgets.QPushButton(self.centralwidget)
self.Button_start_2.setGeometry(QtCore.QRect(30, 70, 81, 41))
self.Button_start_2.setObjectName("Button_start_2")
self.Button_stop_1 = QtWidgets.QPushButton(self.centralwidget)
self.Button_stop_1.setGeometry(QtCore.QRect(150, 20, 75, 41))
self.Button_stop_1.setObjectName("Button_stop_1")
self.Button_stop_2 = QtWidgets.QPushButton(self.centralwidget)
self.Button_stop_2.setGeometry(QtCore.QRect(150, 70, 75, 41))
self.Button_stop_2.setObjectName("Button_stop_2")
self.lcdNumber_1 = QtWidgets.QLCDNumber(self.centralwidget)
self.lcdNumber_1.setGeometry(QtCore.QRect(250, 20, 151, 41))
self.lcdNumber_1.setObjectName("lcdNumber_1")
self.lcdNumber_2 = QtWidgets.QLCDNumber(self.centralwidget)
self.lcdNumber_2.setGeometry(QtCore.QRect(250, 70, 151, 41))
self.lcdNumber_2.setObjectName("lcdNumber_2")
self.Button_pause_thread_1 = QtWidgets.QPushButton(self.centralwidget)
self.Button_pause_thread_1.setGeometry(QtCore.QRect(420, 20, 121, 41))
self.Button_pause_thread_1.setObjectName("Button_pause_thread_1")
self.Button_pause_thread_2 = QtWidgets.QPushButton(self.centralwidget)
self.Button_pause_thread_2.setGeometry(QtCore.QRect(420, 70, 121, 41))
self.Button_pause_thread_2.setObjectName("Button_pause_thread_2")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 641, 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.Button_start_1.setText(_translate("MainWindow", "Start thread1"))
self.Button_start_2.setText(_translate("MainWindow", "Start thread2"))
self.Button_stop_1.setText(_translate("MainWindow", "Stop thread 1"))
self.Button_stop_2.setText(_translate("MainWindow", "Stop thread 1"))
self.Button_pause_thread_1.setText(_translate("MainWindow", "Pause thread 1"))
self.Button_pause_thread_2.setText(_translate("MainWindow", "Pause thread 2"))
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_())
Main.py
import sys
from PyQt5.QtWidgets import QApplication, QMainWindow
from PyQt5.QtCore import pyqtSignal
from PyQt5 import QtCore
import time
from gui import Ui_MainWindow
class MainWindow(QMainWindow):
def __init__(self):
super().__init__()
self.uic = Ui_MainWindow()
self.uic.setupUi(self)
self.thread = {}
self.uic.Button_start_1.clicked.connect(self.start_worker_1)
self.uic.Button_start_2.clicked.connect(self.start_worker_2)
self.uic.Button_stop_1.clicked.connect(self.stop_worker_1)
self.uic.Button_stop_2.clicked.connect(self.stop_worker_2)
def start_worker_1(self):
self.thread[1] = ThreadClass(index=1)
self.thread[1].start()
self.thread[1].signal.connect(self.my_function)
self.uic.Button_start_1.setEnabled(False)
self.uic.Button_stop_1.setEnabled(True)
def start_worker_2(self):
self.thread[2] = ThreadClass(index=2)
self.thread[2].start()
self.thread[2].signal.connect(self.my_function)
self.uic.Button_start_2.setEnabled(False)
self.uic.Button_stop_2.setEnabled(True)
def stop_worker_1(self):
self.thread[1].stop()
self.uic.Button_stop_1.setEnabled(False)
self.uic.Button_start_1.setEnabled(True)
def stop_worker_2(self):
self.thread[2].stop()
self.uic.Button_stop_2.setEnabled(False)
self.uic.Button_start_2.setEnabled(True)
def my_function(self, counter):
m = counter
i = self.sender().index
if i == 1:
self.uic.lcdNumber_1.display(m)
if i == 2:
self.uic.lcdNumber_2.display(m)
class ThreadClass(QtCore.QThread):
signal = pyqtSignal(int)
def __init__(self, index=0):
super().__init__()
self.index = index
def run(self):
print('Starting thread...', self.index)
counter = 0
while True:
counter += 1
print(counter)
time.sleep(1)
self.signal.emit(counter)
def stop(self):
print('Stopping thread...', self.index)
self.terminate()
def get_value_from_button(self):
print("value of thread ")
if __name__ == "__main__":
app = QApplication(sys.argv)
main_win = MainWindow()
main_win.show()
sys.exit(app.exec())
I need to get data at get_value_from_button(self) function, when I press the button.
I am trying to set my webcam to a label and open it on pageload. However code does not throw any error also it does not getting bind to the label as well. Can anyone tell me how to fix this?
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'camera.ui'
#
# Created by: PyQt5 UI code generator 5.15.2
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again. Do not edit this file unless you know what you are doing.
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QApplication, QMainWindow,qApp
import sys
import cv2
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(800, 600)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.gridLayoutWidget = QtWidgets.QWidget(self.centralwidget)
self.gridLayoutWidget.setGeometry(QtCore.QRect(169, 59, 471, 251))
self.gridLayoutWidget.setObjectName("gridLayoutWidget")
self.gridLayout = QtWidgets.QGridLayout(self.gridLayoutWidget)
self.gridLayout.setContentsMargins(0, 0, 0, 0)
self.gridLayout.setObjectName("gridLayout")
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.label = QtWidgets.QLabel(self.gridLayoutWidget)
self.label.setObjectName("label")
self.gridLayout.addWidget(self.label, 0, 0, 1, 1)
self.capture = cv2.cv2.VideoCapture(0)
timer = QtCore.QTimer()
timer.setInterval(int(1000/30))
timer.timeout.connect(self.get_frame)
timer.start()
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def get_frame(self):
frame = self.capture.read()
image = QtGui.QImage(frame, *frame.shape[1::-1], QtGui.QImage.Format_RGB888).rgbSwapped()
pixmap = QtGui.QPixmap.fromImage(image)
self.label.setPixmap(pixmap)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
class MainWindow(QMainWindow):
def __init__(self):
super(MainWindow, self).__init__()
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
if __name__ == "__main__":
app = QApplication(sys.argv)
window = MainWindow()
window.show()
sys.exit(app.exec_())
The problem is that timer is a local variable that will be destroyed so the get_frame method will not be invoked, the solution is to make it a member of the class so you must change timer to self.timer. Also the read() method returns a tuple, no the frame so you should change it to:
def get_frame(self):
ret, frame = self.capture.read()
if ret:
image = QtGui.QImage(
frame, *frame.shape[1::-1], QtGui.QImage.Format_RGB888
).rgbSwapped()
pixmap = QtGui.QPixmap.fromImage(image)
self.label.setPixmap(pixmap)
How can I link checkbox to the variable under pushbutton?
The checkbox will return either 0 or 1 for the variable F which will affect the calculation output.
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_Dialog(object):
def setupUi(self, Dialog):
Dialog.setObjectName("Dialog")
Dialog.resize(400, 394)
self.spinBox = QtWidgets.QSpinBox(Dialog)
self.spinBox.setGeometry(QtCore.QRect(60, 120, 48, 24))
self.spinBox.setObjectName("spinBox")
self.spinBox.setRange(1, 200)
self.spinBox.setValue(0)
self.checkBox = QtWidgets.QCheckBox(Dialog)
self.checkBox.setGeometry(QtCore.QRect(60, 160, 87, 20))
self.checkBox.setObjectName("checkBox")
self.pushButton = QtWidgets.QPushButton(Dialog)
self.pushButton.setGeometry(QtCore.QRect(50, 190, 113, 32))
self.pushButton.setObjectName("pushButton")
self.lcdNumber = QtWidgets.QLCDNumber(Dialog)
self.lcdNumber.setGeometry(QtCore.QRect(90, 230, 113, 32))
self.lcdNumber.setObjectName("lcdNumber")
self.retranslateUi(Dialog)
QtCore.QMetaObject.connectSlotsByName(Dialog)
self.pushButton.clicked.connect(self.pushButton_handler)
def retranslateUi(self, Dialog):
_translate = QtCore.QCoreApplication.translate
Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
self.checkBox.setText(_translate("Dialog", "CheckBox"))
self.pushButton.setText(_translate("Dialog", "PushButton"))
def pushButton_handler(self, state):
A1 = self.spinBox.value()
F= ??? #F to be equal to 0 if check box checked or 1 if
check box unchecked.
i=A1*F
app.processEvents()'
self.lcdNumber.display(i)
QCheckBox::stateChanged(int state)
This signal is emitted whenever the checkbox's state changes, i.e., whenever the user checks or unchecks it.
state contains the checkbox's new Qt::CheckState.
import sys
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.Qt import *
class Ui_Dialog(object):
def setupUi(self, Dialog):
Dialog.setObjectName("Dialog")
Dialog.resize(400, 394)
self.spinBox = QtWidgets.QSpinBox(Dialog)
self.spinBox.setGeometry(QtCore.QRect(60, 120, 48, 24))
self.spinBox.setObjectName("spinBox")
self.spinBox.setRange(1, 200)
self.spinBox.setValue(0)
self.checkBox = QtWidgets.QCheckBox(Dialog)
self.checkBox.setGeometry(QtCore.QRect(60, 160, 87, 20))
self.checkBox.setObjectName("checkBox")
self.pushButton = QtWidgets.QPushButton(Dialog)
self.pushButton.setGeometry(QtCore.QRect(50, 190, 113, 32))
self.pushButton.setObjectName("pushButton")
self.lcdNumber = QtWidgets.QLCDNumber(Dialog)
self.lcdNumber.setGeometry(QtCore.QRect(90, 230, 113, 32))
self.lcdNumber.setObjectName("lcdNumber")
self.retranslateUi(Dialog)
QtCore.QMetaObject.connectSlotsByName(Dialog)
self.pushButton.clicked.connect(self.pushButton_handler)
def retranslateUi(self, Dialog):
_translate = QtCore.QCoreApplication.translate
Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
self.checkBox.setText(_translate("Dialog", "CheckBox"))
self.pushButton.setText(_translate("Dialog", "PushButton"))
class Example(QtWidgets.QDialog, Ui_Dialog): # +
def __init__(self):
super(Example, self).__init__()
self.setupUi(self)
self.checkBox.stateChanged.connect(self.selectCheckBox) # +++
self.F = 1 # +
def pushButton_handler(self, state):
A1 = self.spinBox.value()
# F = #??? #F to be equal to 0 if check box checked or 1 if check box unchecked.
i = A1 * self.F
# ? app.processEvents()'
self.lcdNumber.display(i)
def selectCheckBox(self, toggle): # +++
if toggle == QtCore.Qt.Checked:
self.F = 0
else:
self.F = 1
if __name__ == "__main__":
app = QApplication(sys.argv)
default_font = QFont()
default_font.setPointSize(15)
app.setFont(default_font)
w = Example()
w.resize(220, 300)
w.show()
sys.exit(app.exec_())
I am trying to lunch a simple window when click on a button. this simple window that I had copied come from: MultipleplotAxis.py
My code is:
from PyQt5 import QtCore, QtGui, QtWidgets
import pyqtgraph as pg
from pyqtgraph.Qt import QtCore, QtGui
import numpy as np
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(264, 248)
MainWindow.setMinimumSize(QtCore.QSize(264, 248))
MainWindow.setMaximumSize(QtCore.QSize(264, 248))
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.gridLayout = QtWidgets.QGridLayout(self.centralwidget)
self.gridLayout.setObjectName("gridLayout")
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setObjectName("pushButton")
self.gridLayout.addWidget(self.pushButton, 0, 0, 1, 1)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 264, 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)
self.pushButton.clicked['bool'].connect(self.lanzar_grafica_3_ejes)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.pushButton.setText(_translate("MainWindow", "PushButton"))
def lanzar_grafica_3_ejes(self):
self.lanzar_a_canasta = lanzar()
self.lanzar_a_canasta.setupUi(self)
class lanzar(object):
###########
# COPY FROM PYQTGRAPH.ORG
###########
def __init__(self):
print('__init__ lanzar class')
def setupUi(self, MainWindow):
import time
pg.mkQApp()
pw = pg.PlotWidget()
pw.show()
time.sleep(5)
pw.setWindowTitle('pyqtgraph example: MultiplePlotAxes')
p1 = pw.plotItem
p1.setLabels(left='axis 1')
## create a new ViewBox, link the right axis to its coordinate system
p2 = pg.ViewBox()
p1.showAxis('right')
p1.scene().addItem(p2)
p1.getAxis('right').linkToView(p2)
p2.setXLink(p1)
p1.getAxis('right').setLabel('axis2', color='#0000ff')
## create third ViewBox.
## this time we need to create a new axis as well.
p3 = pg.ViewBox()
ax3 = pg.AxisItem('right')
p1.layout.addItem(ax3, 2, 3)
p1.scene().addItem(p3)
ax3.linkToView(p3)
p3.setXLink(p1)
ax3.setZValue(-10000)
ax3.setLabel('axis 3', color='#ff0000')
## Handle view resizing
def updateViews():
## view has resized; update auxiliary views to match
global p1, p2, p3
p2.setGeometry(p1.vb.sceneBoundingRect())
p3.setGeometry(p1.vb.sceneBoundingRect())
## need to re-update linked axes since this was called
## incorrectly while views had different shapes.
## (probably this should be handled in ViewBox.resizeEvent)
p2.linkedViewChanged(p1.vb, p2.XAxis)
p3.linkedViewChanged(p1.vb, p3.XAxis)
updateViews()
p1.vb.sigResized.connect(updateViews)
p1.plot([10,20,40,80,40,20],[1,2,4,8,16,32])
p2.addItem(pg.PlotCurveItem([10,20,40,80,40,20],[12,13,14,15,16,17], pen='b'))
p3.addItem(pg.PlotCurveItem([10,20,40,80,40,20],[32,16,8,4,2,1], pen='r'))
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 I push the button, the window that I want to appear, it doesnt appears completely, I mean:
This is the window that I want to appear:
, but when I click on the button, only appears the frame with nothing inside. Also I had code a timer because if not, the window disappear immediatetly.
I suppose that I am calling the class in a wrong way.
any help?
Try it:
from PyQt5 import QtCore, QtGui, QtWidgets
import pyqtgraph as pg
from pyqtgraph.Qt import QtCore, QtGui
import numpy as np
#import time
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(264, 248)
MainWindow.setMinimumSize(QtCore.QSize(264, 248))
# MainWindow.setMaximumSize(QtCore.QSize(264, 248))
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.gridLayout = QtWidgets.QGridLayout(self.centralwidget)
self.gridLayout.setObjectName("gridLayout")
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setObjectName("pushButton")
self.gridLayout.addWidget(self.pushButton, 0, 0, 1, 1)
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 264, 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)
# self.pushButton.clicked['bool'].connect(self.lanzar_grafica_3_ejes)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
_translate = QtCore.QCoreApplication.translate
MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
self.pushButton.setText(_translate("MainWindow", "PushButton"))
# def lanzar_grafica_3_ejes(self): ##(MainWindow): #
# self.lanzar_a_canasta = Lanzar()
# self.lanzar_a_canasta.setupUi() #(self)
class Lanzar(QtWidgets.QWidget): #(object):
###########
# COPY FROM PYQTGRAPH.ORG
###########
def __init__(self):
super().__init__()
print('__init__ Lanzar class')
def setupUi(self, MainWindow):
pg.mkQApp()
self.pw = pg.PlotWidget()
# self.pw.show()
# time.sleep(5)
self.pw.setWindowTitle('pyqtgraph example: MultiplePlotAxes')
self.p1 = self.pw.plotItem
self.p1.setLabels(left='axis 1')
## create a new ViewBox, link the right axis to its coordinate system
self.p2 = pg.ViewBox()
self.p1.showAxis('right')
self.p1.scene().addItem(self.p2)
self.p1.getAxis('right').linkToView(self.p2)
self.p2.setXLink(self.p1)
self.p1.getAxis('right').setLabel('axis2', color='#0000ff')
## create third ViewBox.
## this time we need to create a new axis as well.
self.p3 = pg.ViewBox()
ax3 = pg.AxisItem('right')
self.p1.layout.addItem(ax3, 2, 3)
self.p1.scene().addItem(self.p3)
ax3.linkToView(self.p3)
self.p3.setXLink(self.p1)
ax3.setZValue(-10000)
ax3.setLabel('axis 3', color='#ff0000')
## Handle view resizing
def updateViews():
## view has resized; update auxiliary views to match
# global p1, p2, p3
self.p2.setGeometry(self.p1.vb.sceneBoundingRect())
self.p3.setGeometry(self.p1.vb.sceneBoundingRect())
## need to re-update linked axes since this was called
## incorrectly while views had different shapes.
## (probably this should be handled in ViewBox.resizeEvent)
self.p2.linkedViewChanged(self.p1.vb, self.p2.XAxis)
self.p3.linkedViewChanged(self.p1.vb, self.p3.XAxis)
updateViews()
self.p1.vb.sigResized.connect(updateViews)
self.p1.plot([10,20,40,80,40,20],[1,2,4,8,16,32])
self.p2.addItem(pg.PlotCurveItem([10,20,40,80,40,20],[12,13,14,15,16,17], pen='b'))
self.p3.addItem(pg.PlotCurveItem([10,20,40,80,40,20],[32,16,8,4,2,1], pen='r'))
class Window(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self):
super().__init__()
self.setupUi(self)
self.pushButton.clicked.connect(self.lanzar_grafica_3_ejes)
def lanzar_grafica_3_ejes(self):
self.lanzar_a_canasta = Lanzar()
self.lanzar_a_canasta.setupUi(self.lanzar_a_canasta)
self.gridLayout.addWidget(self.lanzar_a_canasta.pw, 1, 0, 1, 5)
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
w = Window()
w.show()
w.resize(630, 550)
sys.exit(app.exec_())
I searched in Google usually many posts are talking about how to open a new window and not indicating how to close the window. I found several posts in this website but most of them are using dialog window which is not considered in my software.
I make a UI, which contains a spin box and a button, to demonstrate my problem. I can type in a number equal or less than 5 in spin box. When I click the button, a number of new windows will show up and how many windows will show up is depending on the number in the spin box. If I change to the number in spin box then click the button, the original windows will be closed and new windows will be shown.
Fox example, first I type in "2" in spin box then click the button. Then 2 new windows will show up. If I change the number in spin box to 3 then click the button, the original 2 windows will be closed and 3 new windows will show up.
Here is my main program code:
from PyQt5.QtWidgets import QApplication, QMainWindow
from uitest_review import Ui_MainWindow # import the UI module
# set up a class for main window
class window(QMainWindow):
def __init__(self, parent=None):
super(window, self).__init__(parent)
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
self.ui.Open.clicked.connect(self.openwindow)
def openwindow(self):
windownum = self.ui.windownum.value()
print("open window num:", windownum)
opennewwindow = newwindow(self)
opennewwindow.show()
class newwindow(QMainWindow):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
if __name__ == "__main__":
app = QApplication([])
gui = window()
gui.show()
app.exec_()
Here is my UI code:
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(816, 577)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.gridLayout = QtWidgets.QGridLayout(self.centralwidget)
self.gridLayout.setObjectName("gridLayout")
self.scrollArea = QtWidgets.QScrollArea(self.centralwidget)
self.scrollArea.setWidgetResizable(True)
self.scrollArea.setObjectName("scrollArea")
self.scrollAreaWidgetContents = QtWidgets.QWidget()
self.scrollAreaWidgetContents.setGeometry(QtCore.QRect(0, 0, 796, 537))
self.scrollAreaWidgetContents.setObjectName(\
"scrollAreaWidgetContents")
self.verticalLayout = QtWidgets.QVBoxLayout(self.scrollAreaWidgetContents)
self.verticalLayout.setContentsMargins(0, 0, 0, 0)
self.verticalLayout.setObjectName("verticalLayout")
spacerItem = QtWidgets.QSpacerItem(20, 10, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Minimum)
self.verticalLayout.addItem(spacerItem)
self.windownum = QtWidgets.QSpinBox(self.scrollAreaWidgetContents)
self.windownum.setMaximum(5)
self.windownum.setObjectName("windownum")
self.verticalLayout.addWidget(self.windownum)
self.groupBox = QtWidgets.QGroupBox(self.scrollAreaWidgetContents)
self.groupBox.setTitle("")
self.groupBox.setObjectName("groupBox")
self.horizontalLayout = QtWidgets.QHBoxLayout(self.groupBox)
self.horizontalLayout.setObjectName("horizontalLayout")
spacerItem1 = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Preferred, QtWidgets.QSizePolicy.Minimum)
self.horizontalLayout.addItem(spacerItem1)
self.Open = QtWidgets.QPushButton(self.groupBox)
font = QtGui.QFont()
font.setPointSize(14)
font.setBold(True)
font.setWeight(75)
self.Open.setFont(font)
self.Open.setObjectName("Open")
self.horizontalLayout.addWidget(self.Open)
spacerItem2 = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Preferred, QtWidgets.QSizePolicy.Minimum)
self.horizontalLayout.addItem(spacerItem2)
self.verticalLayout.addWidget(self.groupBox)
self.scrollArea.setWidget(self.scrollAreaWidgetContents)
self.gridLayout.addWidget(self.scrollArea, 0, 0, 1, 1)
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.Open.setText(_translate("MainWindow", "Open"))
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 create a new class (newwindow) in my main program and I can call this class to show a new window. But I cannot figure out how to detect how many windows is opened and how to close them. Does anyone can help me? Thank you so much.
I figured out by myself.
class window(QMainWindow):
def __init__(self, parent=None):
super(window, self).__init__(parent)
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
self.ui.Open.clicked.connect(self.openwindow)
self.openedwin = []
def openwindow(self):
windownum = self.ui.windownum.value()
if windownum != 0:
if self.openedwin != []:
for window in self.openedwin:
window.close()
for repeat in range(windownum):
opennewwindow = newwindow(self)
# print("opennewwindow:", opennewwindow)
self.openedwin.append(opennewwindow)
opennewwindow.show()
# print("self.openedwin:", self.openedwin)
class newwindow(QMainWindow):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
if __name__ == "__main__":
app = QApplication([])
gui = window()
gui.show()
app.exec_()
I add a list self.openedwin = [] to save all window objects. I can use "window object".close() command to close the window before opening new one.