关闭住主窗口

"""关闭主窗口"""

from PyQt5.QtWidgets import QMainWindow, QHBoxLayout, QPushButton, QApplication, QWidget
import sys

class WinForm(QMainWindow):
    def __init__(self):
        super().__init__()
        self.setWindowTitle('关闭主窗口的例子')
        self.button1 = QPushButton('关闭主窗口')
        self.button1.clicked.connect(self.onButtonClick)

        layout = QHBoxLayout()
        layout.addWidget(self.button1)

        main_frame = QWidget()
        main_frame.setLayout(layout)
        self.setCentralWidget(main_frame)


    def onButtonClick(self):
        # sender是发送信号的对象
        sender = self.sender()
        print(sender.text() + '被按下了')
        qApp = QApplication.instance()
        qApp.quit()

if __name__ == '__main__':
    app = QApplication(sys.argv)
    form = WinForm()
    form.show()
    sys.exit(app.exec_())