PyQt5--EventHandler

# -*- coding:utf-8 -*-
'''
Created on Sep 14, 2018

@author: SaShuangYiBing
'''
import sys
from PyQt5.QtCore import Qt
from PyQt5.QtWidgets import QApplication,QWidget

class New_test(QWidget):
    def __init__(self):
        super().__init__()
        self.initUI()
        
    def initUI(self):
        self.setGeometry(300,300,250,150)
        self.setWindowTitle('Event Handler')
        self.show()
    
    def keyPressEvent(self, e):
        if e.key() == Qt.Key_Escape:
            self.close()
        
if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = New_test()
    sys.exit(app.exec_())

程序运行后窗口打开，此时按  Ctrl+Q 组合键即可关闭该窗口