PyQt - QCheckBox

import sys
from PyQt4 import QtGui, QtCore

app = QtGui.QApplication(sys.argv)
widget = QtGui.QWidget()

widget.setGeometry(200, 100, 400, 300)
widget.setWindowTitle('PyQt Application')


show = QtGui.QCheckBox('Ayam Bakar',widget)

show.move(10, 10)

def hello():
    if show.isChecked():
        widget.setWindowTitle('Ayam Bakar')
    else:
        widget.setWindowTitle('')
       
widget.connect(show, QtCore.SIGNAL('stateChanged(int)'), hello)

widget.show()
sys.exit(app.exec_())

PyQt - QCheckBox