How To Implement A Key Listener In Pyqt5 For A Qplaintextedit (or Any Other Component)

While I realize others have asked similar questions, my limited knowledge seems to have resulted in a missing piece to this puzzle. I will further explain why this question hasn't

Solution 1:

Qt Designer provides a simple method to create a GUI, but it only implements the design and not the logic, the task you want to do is part of the logic. For this it is advisable to create a new class that uses the previous design.

To do this you must create a new file that will call you main.py which must be in the same folder as the file generated by Qt Designer. To the file generated by Qt Designer I will call it design.py:

.
├── design.py
└── main.py

This class inherits from the window that you used as a template: QMainWindow and the generated design, you must call setupUi() to fill the widgets.

from PyQt5 import QtCore, QtGui, QtWidgets

from design import Ui_MainWindow

classMainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
    def__init__(self, *args, **kwargs):
        QtWidgets.QMainWindow.__init__(self, *args, **kwargs)
        self.setupUi(self)
    defkeyPressEvent(self, event):
        if event.key() == QtCore.Qt.Key_Escape:
            self.close()

if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    w = MainWindow()
    w.show()
    sys.exit(app.exec_())