sender()用法介绍

 1 import sys
 2 from PyQt5.QtWidgets import QMainWindow, QPushButton, QApplication
 3 
 4 class Exp(QMainWindow):
 5     def __init__(self):
 6         super().__init__()
 7         self.initUI()
 8 
 9     def initUI(self):
10         btn1 = QPushButton(‘按钮1‘,self)
11         btn1.setObjectName("button1")
12         btn1.move(30,50)
13 
14         btn2 = QPushButton(‘按钮2‘,self)
15         btn2.setObjectName("button2")
16         btn2.move(150,50)
17 
18         btn1.clicked.connect(self.buttonClicked)
19         btn2.clicked.connect(self.buttonClicked)
20 
21         self.statusBar()
22 
23         self.setGeometry(300,300,290,150)
24         self.setWindowFilePath(‘Event sender‘)
25         self.show()
26 
27 
28     def buttonClicked(self):
29         sender = self.sender()
30         self.statusBar().showMessage(sender.text()+‘ ‘+sender.objectName()+ ‘被点击了‘)
31 
32 
33 if __name__ == ‘__main__‘:
34     app = QApplication(sys.argv)
35     ex = Exp()
36     sys.exit(app.exec_())