[qt5] event handler - terminate with esc

reimplement_event_handler.py

__author__ = 'tom'

import sys
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import QWidget, QApplication


class Example(QWidget):
    def __init__(self):
        super().__init__()
        self.init_ui()

    def init_ui(self):
        self.setGeometry(300, 300, 250, 150)
        self.setWindowTitle('Event handler')
        self.show()

    def keyPressEvent(self, QKeyEvent):
        if QKeyEvent.key() == Qt.Key_Escape:
            self.close()
            
            
if __name__ == "__main__":
    app = QApplication(sys.argv)
    ex = Example()
    sys.exit(app.exec_())