[FIXED] Disable enterkey for next button pyqt5 QWizard

Issue

I am making a Wizard in QWizard

I have QLineEdit and QPushButton

# Enter token
self.enter_token_box = QLineEdit()
# Enter token button
self.btn = QPushButton('OK')
# connect button to function, checks the token..
self.btn.clicked.connect(self._EnterToken)

I have put in this line which accepts an enter key press and runs the function the same as clicking the "OK" button.

# Enter key press connection
self.enter_token_box.returnPressed.connect(self._EnterToken)

The problem is that it will trigger BOTH the OK button AND the Next button of the wizard.

MVCE:

import sys
from PyQt5.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *


class Wizard(QWizard):
    def __init__(self, parent=None):
        super(Wizard, self).__init__(parent)

        self.addPage(EnterToken(self)) 
        self.addPage(ProcessData(self))

class EnterToken(QWizardPage):
    def __init__(self, parent=None):
        super(EnterToken, self).__init__(parent)

        self.setTitle("Enter your token here")
        self.setSubTitle(" ")           

        # Enter Token Widgets
        self.label = QLabel()
        self.enter_token_box = QLineEdit()        

        self.btn = QPushButton('OK')

        # layout options
        layout = QVBoxLayout()
        layout.addWidget(self.label)        
        self.label.setText("Enter Your 12 Digit Code.")
        layout.addWidget(self.enter_token_box)
        layout.addWidget(self.btn)

        # Enter Key TRigger
        self.enter_token_box.returnPressed.connect(self._EnterToken)

        self.btn.clicked.connect(self._EnterToken)

        self.setLayout(layout)        


    def _EnterToken(self):
        """ Method for processing user input after the button is pressed"""

        QMessageBox.about(self, "I want only this!!", "I want only you and not the next page!!")


class ProcessData(QWizardPage):
    """ Sensor Code Entry """
    def __init__(self, parent=None):
        super(ProcessData, self).__init__(parent)        

        # num of logs combo box
        self.num_logs_combo = QComboBox(self)

        # ~buttons
        self.btn = QPushButton('OK')

        layout = QVBoxLayout()
        layout.addWidget(self.num_logs_combo)
        layout.addWidget(self.btn)  
        self.setLayout(layout)    

if __name__ == '__main__':
    app = QApplication(sys.argv)
    wizard = Wizard()
    wizard.show()
    sys.exit(app.exec_())

If you run the code above and click ok, you will remain on the page. Same thing happens if you have anything selected other than the QLineEdit box.

If you are in the QLineEdit box and you press Enter, you will be taken to the next page as well as displaying the messagebox.

How can I stop the Enter Key from being linked to the Next button.

How can I access and override attributes for the BACK, NEXT and FINISH buttons in QWizard?

Solution

To access the buttons you must use the button() method and pass the QWizard::WizardButton, in your case you must disable the default of the QPushButton.

class Wizard(QWizard):
    def __init__(self, parent=None):
        super(Wizard, self).__init__(parent)

        self.addPage(EnterToken(self)) 
        self.addPage(ProcessData(self))

    def showEvent(self, event):
        self.button(QWizard.NextButton).setDefault(False)
        super(Wizard, self).showEvent(event)

Update:

class Wizard(QWizard):
    def __init__(self, parent=None):
        super(Wizard, self).__init__(parent)

        self.addPage(EnterToken(self)) 
        self.addPage(ProcessData(self))

        self.buttons = [self.button(t) for t in (QWizard.NextButton, QWizard.FinishButton)]

        for btn in self.buttons:
            btn.installEventFilter(self)

    def eventFilter(self, obj, event):
        if obj in self.buttons and event.type() == QEvent.Show:
            obj.setDefault(False)
        return super(Wizard, self).eventFilter(obj, event)

Answered By - eyllanesc