I'm using a USB-barcode scanner to set the text of a Qt lineEdit field to scan production order number, My issue is that after scanning the window is closed instead of shifting to next lineEdit_2 to scan item number. How to setup lineEdit to shift the crusor to next lineEdit_2 and be ready for the next scan.
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_Dialog(object):
def setupUi(self, Dialog):
Dialog.setObjectName("Dialog")
Dialog.resize(400, 300)
self.buttonBox = QtWidgets.QDialogButtonBox(Dialog)
self.buttonBox.setGeometry(QtCore.QRect(290, 20, 81, 241))
self.buttonBox.setOrientation(QtCore.Qt.Vertical)
self.buttonBox.setStandardButtons(QtWidgets.QDialogButtonBox.Cancel|QtWidgets.QDialogButtonBox.Ok)
self.buttonBox.setObjectName("buttonBox")
self.lineEdit = QtWidgets.QLineEdit(Dialog)
self.lineEdit.setGeometry(QtCore.QRect(50, 50, 113, 22))
self.lineEdit.setObjectName("lineEdit")
self.lineEdit_2 = QtWidgets.QLineEdit(Dialog)
self.lineEdit_2.setGeometry(QtCore.QRect(50, 120, 113, 22))
self.lineEdit_2.setObjectName("lineEdit_2")
self.lineEdit_3 = QtWidgets.QLineEdit(Dialog)
self.lineEdit_3.setGeometry(QtCore.QRect(50, 200, 113, 22))
self.lineEdit_3.setObjectName("lineEdit_3")
self.retranslateUi(Dialog)
self.buttonBox.accepted.connect(Dialog.accept)
self.buttonBox.rejected.connect(Dialog.reject)
QtCore.QMetaObject.connectSlotsByName(Dialog)
def retranslateUi(self, Dialog):
_translate = QtCore.QCoreApplication.translate
Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
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_())
By default the buttons of a QPushButton are pressed when the enter key is clicked and the QDialog has focus, and that click causes the rejected or accepted signal to be emitted, which closes the window, and this is handled by the default and autoDefault properties, so the first thing is to override that behavior.
On the other hand, pressing the enter key does not move to the other QLineEdit, in that case you must listen to that key and use focusNextPrevChild to move the focus.
Finally the codes generated by QtDesigner should not be modified so I will assume that the code you show is in the gui.py file, and I will implement the logic in main.py:
import sys
from PyQt5 import QtCore, QtWidgets
from gui import Ui_Dialog
class Dialog(QtWidgets.QDialog, Ui_Dialog):
def __init__(self, parent=None):
super().__init__(parent)
self.setupUi(self)
self.show()
for btn in self.buttonBox.buttons():
btn.setDefault(False)
btn.setAutoDefault(False)
btn.setFocusPolicy(QtCore.Qt.NoFocus)
def keyPressEvent(self, event):
if event.key() in (QtCore.Qt.Key_Enter, QtCore.Qt.Key_Return):
self.focusNextPrevChild(True)
super().keyPressEvent(event)
if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
w = Dialog()
w.show()
sys.exit(app.exec_())
Related
I have a window created by pyqt and there is a button that clicks to show a dialog that takes input from the user using QinputDialog, normally when I press ok after input, QinputDialog is closed and the main window is closed. is also closed, how to click ok in Qinputdialog that the main window is not closed? Thank so much!
from PyQt6 import QtCore, QtGui, QtWidgets
from PyQt6.QtWidgets import *
class Ui_Dialog(object):
def setupUi(self, Dialog):
Dialog.setObjectName("Dialog")
Dialog.resize(400, 300)
self.label = QtWidgets.QLabel(Dialog)
self.label.setGeometry(QtCore.QRect(60, 30, 291, 61))
self.label.setObjectName("label")
self.pushButton = QtWidgets.QPushButton(Dialog)
self.pushButton.setGeometry(QtCore.QRect(130, 140, 75, 23))
self.pushButton.setObjectName("pushButton")
self.retranslateUi(Dialog)
QtCore.QMetaObject.connectSlotsByName(Dialog)
self.pushButton.clicked.connect(self.showinput)
def retranslateUi(self, Dialog):
_translate = QtCore.QCoreApplication.translate
Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
self.label.setText(_translate("Dialog", "LABEL"))
self.pushButton.setText(_translate("Dialog", "CLICK"))
def showinput(self):
app2 = QApplication(sys.argv)
split_date, ok = QInputDialog.getText(None, "Input Dialog", "Input something?")
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())
# -*- coding: utf-8 -*-
# Form implementation generated from reading ui file 'PyosUI.ui'
#
# Created by: PyQt5 UI code generator 5.15.7
#
# 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.
import sys
from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import (
QApplication,
QLabel,
QMainWindow,
QPushButton,
QVBoxLayout,
QWidget
)
class GameWindow(QWidget):
def __init__(self):
super.__init__()
layout = QVBoxLayout()
self.label = QLabel("Hello!")
layout.addWidget(self.label)
self.setLayout(layout)
class Ui_Dialog(object):
def setupUi(self, Dialog):
Dialog.setObjectName("Dialog")
Dialog.setEnabled(True)
Dialog.resize(1044, 601)
self.Notepad = QtWidgets.QPushButton(Dialog)
self.Notepad.setGeometry(QtCore.QRect(50, 520, 281, 61))
self.Notepad.setObjectName("Notepad")
self.Game = QtWidgets.QPushButton(Dialog)
self.Game.setGeometry(QtCore.QRect(390, 520, 271, 61))
self.Game.setObjectName("Game")
self.Poweroff = QtWidgets.QPushButton(Dialog)
self.Poweroff.setGeometry(QtCore.QRect(690, 520, 111, 31))
self.Poweroff.setObjectName("Poweroff")
self.Settings = QtWidgets.QPushButton(Dialog)
self.Settings.setGeometry(QtCore.QRect(690, 560, 111, 31))
self.Settings.setObjectName("Settings")
self.Date_time = QtWidgets.QDateTimeEdit(Dialog)
self.Date_time.setGeometry(QtCore.QRect(840, 20, 194, 22))
self.Date_time.setObjectName("Date_time")
self.label = QtWidgets.QLabel(Dialog)
self.label.setGeometry(QtCore.QRect(0, -20, 1051, 641))
self.label.setText("")
self.label.setPixmap(QtGui.QPixmap("background.png"))
self.label.setObjectName("label")
self.label.raise_()
self.Notepad.raise_()
self.Game.raise_()
self.Poweroff.raise_()
self.Settings.raise_()
self.Date_time.raise_()
self.retranslateUi(Dialog)
QtCore.QMetaObject.connectSlotsByName(Dialog)
l = QVBoxLayout()
self.Game.clicked.connect(self.button_clicked)
l.addWidget(self.Game)
def retranslateUi(self, Dialog):
_translate = QtCore.QCoreApplication.translate
Dialog.setWindowTitle(_translate("Dialog", "PyOS"))
self.Notepad.setText(_translate("Dialog", "Notepad"))
self.Game.setText(_translate("Dialog", "Game"))
self.Poweroff.setText(_translate("Dialog", "Poweroff"))
self.Settings.setText(_translate("Dialog", "Settings"))
def game_window(self):
game_window = QtWidgets.QDialog()
game_window.setWindowTitle("Game")
game_window.resize(600, 600)
game_window.show()
def button_clicked(self):
self.game_window()
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_())
The above code is the UI I made with Pyqt5 designer. For the work I want to make, when the 'Game' button is clicked, a window dedicated to the 'Game' button should appear.
However, when I run the code above, when I press the 'Game' button, a 600 x 600 window appears and then disappears.
Why?
How else can I solve this problem?
Thank you.
The game_window is a local variable within the game_window() method in Ui_Dialog.
Set the window as an instance and it should be fine.
Modified method
# other code remains same.
def game_window(self):
self._game_window = QtWidgets.QDialog()
self._game_window.setWindowTitle("Game")
self._game_window.resize(600, 600)
self._game_window.show()
Edit: The reason to add the underscore (_) is to avoid having the same name as the method name.
This is a sample code with just a push button and a textedit, i need to write line x line using a loop in a textedit when button is clicked.
The problem is that i need to implement threads because without them the program crashes or it doesn't write line x line, but all together when the loop ends;
and i need to implement in my application a textedit that shows info while the program loads "something".
So my question is, how to rewrite this code using threads to write in textedit when button is clicked?
The method i should run when the button is clicked is "write"
it should work like a print inside a for loop , it would print not all at once
from PyQt5 import QtCore, QtGui, QtWidgets
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(640, 480)
self.centralwidget = QtWidgets.QWidget(MainWindow)
self.centralwidget.setObjectName("centralwidget")
self.textEdit = QtWidgets.QTextEdit(self.centralwidget)
self.textEdit.setGeometry(QtCore.QRect(150, 220, 321, 71))
self.textEdit.setObjectName("textEdit")
self.pushButton = QtWidgets.QPushButton(self.centralwidget)
self.pushButton.setGeometry(QtCore.QRect(240, 100, 75, 23))
self.pushButton.setObjectName("pushButton")
MainWindow.setCentralWidget(self.centralwidget)
self.menubar = QtWidgets.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0, 0, 640, 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.write)
def write(self):
string=""
for i in range(1000):
string="\n"+str(i)
self.textEdit.insertPlainText(string)
import sys
app = QtWidgets.QApplication(sys.argv)
MainWindow = QtWidgets.QMainWindow()
ui = Ui_MainWindow()
ui.setupUi(MainWindow)
MainWindow.show()
sys.exit(app.exec_())
First of all it is recommended not to modify the class generated by Qt Designer so you must regenerate the file and assume that it is called mainwindow.py: pyuic5 your_file.ui -o mainwindow.py -x.
Considering the above, the logic is to generate the information in another thread and send it to the GUI to modify it:
main.py
import threading
from PyQt5 import QtCore, QtGui, QtWidgets
from mainwindow import Ui_MainWindow
class WriterWorker(QtCore.QObject):
textChanged = QtCore.pyqtSignal(str)
def start(self):
threading.Thread(target=self._execute, daemon=True).start()
def _execute(self):
string = ""
for i in range(1000):
string = "\n"+str(i)
self.textChanged.emit(string)
class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.setupUi(self)
self.writer_worker = WriterWorker()
self.writer_worker.textChanged.connect(self.on_text_changed)
self.pushButton.clicked.connect(self.writer_worker.start)
#QtCore.pyqtSlot(str)
def on_text_changed(self, text):
self.textEdit.insertPlainText(text)
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
w = MainWindow()
w.show()
sys.exit(app.exec_())
I have simple dialog with one Line Edit and one Push Button widgets. After running applciation and while resizing the dialog
size these widgets(LineEdit and PushButton) does not fit to the dialog.How can i make these item responsive while resizing the
dialog box.
class Ui_ZValue(object):
def setupUi(self, ZValue):
ZValue.setObjectName("ZValue")
ZValue.resize(400, 300)
ZValue.setModal(False)
self.lineEdit = QtWidgets.QLineEdit(ZValue)
self.lineEdit.setGeometry(QtCore.QRect(130, 70, 131, 41))
self.lineEdit.setObjectName("lineEdit")
self.pushButton = QtWidgets.QPushButton(ZValue)
self.pushButton.setGeometry(QtCore.QRect(130, 150, 131, 41))
self.pushButton.setObjectName("pushButton")
self.retranslateUi(ZValue)
QtCore.QMetaObject.connectSlotsByName(ZValue)
def retranslateUi(self, ZValue):
_translate = QtCore.QCoreApplication.translate
ZValue.setWindowTitle(_translate("ZValue", "Copy Z Cordinate"))
self.pushButton.setText(_translate("ZValue", "Cofirm"))
import sys
from PyQt5.QtWidgets import QDialog,QApplication
from makebeautiful import *
class MyForm(QDialog):
def __init__(self):
super().__init__()
self.ui=Ui_ZValue()
self.ui.setupUi(self）
self.ui.pushButton.clicked.connect(self.dispmessage)
self.show()
def dispmessage(self):
self.ui.lineEdit.setText("clicked")
if __name__=="__main__":
app=QApplication(sys.argv)
w=MyForm()
w.show()
sys.exit(app.exec_())
I am making a GUI using qt and trying incorporate a LineEdit with Vertical Orientation.
When using the code:
import sys
from PyQt4 import QtCore, QtGui
class Ui_Dialog(object):
def setupUi(self, Dialog):
Dialog.setObjectName("Dialog")
Dialog.resize(250, 250)
self.lineEdit = QtGui.QLineEdit(Dialog)
self.lineEdit.setGeometry(QtCore.QRect(40, 80, 120, 20))
self.lineEdit.setObjectName("lineEdit")
self.retranslateUi(Dialog)
QtCore.QMetaObject.connectSlotsByName(Dialog)
def retranslateUi(self, Dialog):
Dialog.setWindowTitle(_translate("Dialog", "Dialog #1", None))
class themain(QtGui.QDialog, Ui_Dialog):
def __init__(self, parent=None):
super(themain,self).__init__(parent)
self.setupUi(self)
self.lineEdit.setText('Some Text')
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
form = themain()
form.show()
sys.exit(app.exec_())
I get a simple LineEdit with Horizontal Orientation.
In essence I need something that looks like:
[Image][1]
http://users.ntua.gr/anthpro/images/dialog.png
(The image has been photoshopped to show the lineedit in vertical orientation)