PyQt4发射信号

#!/usr/bin/python
# -*- coding: utf-8 -*-

import sys
from PyQt4 import QtGui, QtCore 

class Emit(QtGui.QWidget):
    def __init__(self, parent = None):
        QtGui.QWidget.__init__(self)
        self.setWindowTitle(‘emit‘)
        self.resize(250, 150)
        self.connect(self, QtCore.SIGNAL(‘closeEmitApp()‘),
                            QtCore.SLOT(‘close()‘))
    def mousePressEvent(self, event):
        self.emit(QtCore.SIGNAL(‘closeEmitApp()‘))
        
app = QtGui.QApplication(sys.argv)
emit = Emit()
emit.show()
sys.exit(app.exec_())