pyqt sender()学习

#!/usr/bin/python

# -*- coding: utf-8 -*-

# sender.py

import sys

from PyQt4 import QtGui, QtCore

class Example(QtGui.QMainWindow):

def __init__(self):

super(Example, self).__init__()

self.initUI()

def initUI(self):

button1 = QtGui.QPushButton("Button 1", self)

button1.move(30, 50)

button2 = QtGui.QPushButton("Button 2", self)

button2.move(150, 50)

self.connect(button1, QtCore.SIGNAL('clicked()'),

self.buttonClicked)

self.connect(button2, QtCore.SIGNAL('clicked()'),

self.buttonClicked)

self.statusBar().showMessage('Ready')

self.setWindowTitle('Event sender')

self.resize(290, 150)

def buttonClicked(self):

sender = self.sender()#http://www.cppblog.com/mirguest/archive/2012/02/05/164984.html::sender 是发送信号的对象。 receiver 是接受信号的对象。而 slot 是回馈信号的方法。

self.statusBar().showMessage(sender.text() + ' was pressed')

app = QtGui.QApplication(sys.argv)

ex = Example()

ex.show()

sys.exit(app.exec_())

如图: