PyQt5--EventSender

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

@author: SaShuangYiBing

Comment: This example is show which sender was triggered.
创建了两个按钮。在buttonClicked()方法中通过调用sender()方法来判断当前按下的是哪个按钮
'''
import sys
from PyQt5.QtWidgets import QApplication,QMainWindow,QPushButton

class New_test(QMainWindow):
    def __init__(self):
        super().__init__()
        self.initUI()
        
    def initUI(self):
        btn1 = QPushButton('Button1',self)
        btn1.move(30,50)
        btn2 = QPushButton('Button2',self)
        btn2.move(150,50)
        
        btn1.clicked.connect(self.buttonClicked)
        btn2.clicked.connect(self.buttonClicked)
        
        self.statusBar()
        
        self.setGeometry(300,300,290,150)
        self.setWindowTitle('Event Sender')
        self.show()
        
    def buttonClicked(self):
        sender = self.sender()
        self.statusBar().showMessage(sender.text() + ' was pressed')  # 通过调用sender()方法来判断信号源， 并将其名称显示在窗体的状态栏中
        
if __name__ == '__main__':
    app = QApplication(sys.argv)
    ex = New_test()
    sys.exit(app.exec_())

按下 button1时在status bar的提示语：

按下 button2时在 status bar的提示语：