PyQt5基础学习-定义键盘按键事件 1.keyPressEvent(重写按钮按下的事件)

通过重写按钮按下的事件，来生成按键新的功能

OverrideSlot.py 

"""
Override(覆盖) 槽函数
"""
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
import sys

class OverrideSlot(QWidget):
    def __init__(self):
        super(OverrideSlot, self).__init__()
        self.setWindowTitle("Override(覆盖) 槽函数")

    def keyPressEvent(self, e):
        if e.key() == Qt.Key_Escape:
            self.close()
        elif e.key() == Qt.Key_Alt:
            self.setWindowTitle("按下Alt键")

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

    main = OverrideSlot()
    main.show()

    sys.exit(app.exec_())