How PyQt5 keyPressEvent works

user_7450056 0
Viewed 20761

I create a UI from PyQt GPL v5.4 and use pyuic5 convert *.ui file to *.py

But I do not know how keyPressEvent work in this code!!

It should work for QWidget, but how to let it works.

Please help!

from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import QWidget

class Ui_MainWindow(QWidget,object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(200, 200)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.pushButton = QtWidgets.QPushButton(self.centralwidget)
        self.pushButton.setGeometry(QtCore.QRect(50, 110, 75, 23))
        self.pushButton.setObjectName("pushButton")


        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"))\

    def keyPressEvent(self, e):
        if e.key() == Qt.Key_F5:
            self.close()


if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QWidget()
    ui = Ui_MainWindow()
    ui.setupUi(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())
python-3.4 pyqt5 pyqt python-3.x python
2 Answers

Just a general answer (for those who want general usecase):

import sys
from PyQt5.QtWidgets import (QApplication, QWidget)
from PyQt5.Qt import Qt

class MainWindow(QWidget):
    def __init__(self):
        super().__init__()
        
    def keyPressEvent(self, event):
        if event.key() == Qt.Key_Space:
            self.test_method()

    def test_method(self):
        print('Space key pressed')

if __name__ == '__main__':
    app = QApplication(sys.argv)

    demo = MainWindow()
    demo.show()

    sys.exit(app.exec_())

Source: here

user_60130160
Related