关闭住主窗口

 1 """关闭主窗口"""
 2 
 3 from PyQt5.QtWidgets import QMainWindow, QHBoxLayout, QPushButton, QApplication, QWidget
 4 import sys
 5 
 6 class WinForm(QMainWindow):
 7     def __init__(self):
 8         super().__init__()
 9         self.setWindowTitle('关闭主窗口的例子')
10         self.button1 = QPushButton('关闭主窗口')
11         self.button1.clicked.connect(self.onButtonClick)
12 
13         layout = QHBoxLayout()
14         layout.addWidget(self.button1)
15 
16         main_frame = QWidget()
17         main_frame.setLayout(layout)
18         self.setCentralWidget(main_frame)
19 
20 
21     def onButtonClick(self):
22         # sender是发送信号的对象
23         sender = self.sender()
24         print(sender.text() + '被按下了')
25         qApp = QApplication.instance()
26         qApp.quit()
27 
28 if __name__ == '__main__':
29     app = QApplication(sys.argv)
30     form = WinForm()
31     form.show()
32     sys.exit(app.exec_())