[PyQt] Konsole part doesn't emit "destroyed()" signal on "exit"

[Shamakhov Andrey]

Hello!

I have a program like this:

####################################
#!/usr/bin/python                                                               
                             

import sys
import os 

from PyKDE4.kdecore import *
from PyKDE4.kdeui import *  
from PyKDE4.kparts import * 

from PyQt4.QtCore import *
from PyQt4.QtGui import * 

class MainWindow (KMainWindow):
    def __init__ (self):       
        KMainWindow.__init__(self)
        self.resize(640, 480)     
        factory = KLibLoader.self().factory("libkonsolepart")
        self.part = factory.create(self, "KonsolePart")      
        self.connect(self.part, SIGNAL("destroyed()"), self.readd)
        self.setCentralWidget(self.part.widget())                 
        self.part.openUrl(KUrl.fromPath(os.environ['HOME']))      

    def readd(self):
        print "Wow!"
        factory = KLibLoader.self().factory("libkonsolepart")
        self.part = factory.create(self, "KonsolePart")      
        self.connect(self.part, SIGNAL("destroyed()"), self.readd)
        self.setCentralWidget(self.part.widget())
        self.part.openUrl(KUrl.fromPath(os.environ['HOME']))

if __name__ == '__main__':

    appName     = "Konsolepart_example"
    catalog     = ""
    programName = ki18n("Konsole Part Example")
    version     = "1.0"
    description = ki18n("Example loading a Konsole Part")
    license     = KAboutData.License_GPL
    copyright   = ki18n("(c)")
    text        = ki18n("none")
    homePage    = "localhost"
    bugEmail    = "none"

    aboutData   = KAboutData(appName, catalog, programName, version,  
description,
                license, copyright, text, homePage, bugEmail)

    KCmdLineArgs.init(sys.argv, aboutData)
    app = KApplication()
    mainWindow = MainWindow()
    mainWindow.show()
    app.exec_()
###################################

When you close opened console session, the "destroyed()" signal doesn't emited 
by konsole part on system with new version of PyKDE(4.3.3)(or/and 
PyQt(4.6.1)). This program works absolutely fine on system with PyKDE 4.3.1 
and PyQt 4.5.2. What is wrong in this code now?

Sorry for my english and thanks.  
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