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List:       pykde
Subject:    Re: [PyQt] PyKDE application crashes on exit
From:       Benno Dielmann <lists () benno-dielmann ! de>
Date:       2008-07-30 23:26:20
Message-ID: 200807310126.21136.lists () benno-dielmann ! de
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On Thursday 31 July 2008 00:05:25 Jim Bublitz wrote:
| On Wednesday 30 July 2008 12:56, Benno Dielmann wrote:
| > Hi,
| >
| > This PyKDE4 application always crashes on exit:
| > ---------------------------------------------------------
| > import sys
| > from PyQt4.QtCore import *
| > from PyQt4.QtGui import *
| > from PyKDE4.kdecore import ki18n, KAboutData, KCmdLineArgs
| > from PyKDE4.kdeui import KApplication
| >
| > class Benup(QWidget):
| >     def __init__(self, parent=None):
| >         super(Benup, self).__init__(parent)
| >         self.splash = QLabel('testing...')
| >         layout = QVBoxLayout()
| >         layout.addWidget(self.splash)
| >         self.setLayout(layout)
| >
| > if __name__ == '__main__':
| >     appName     = "benup"
| >     catalog     = ""
| >     programName = ki18n("Benup")
| >     version     = "0.1"
| >     aboutData   = KAboutData(appName, catalog, programName, version)
| >     KCmdLineArgs.init(sys.argv, aboutData)
| >     app = KApplication()
| >     b = Benup()
| >     b.show()
| >     app.exec_()
| > ---------------------------------------------------------------------
| >
| > Any ideas why? It doesn't crash if I make self.splash local, i.e.
| > removing the "self.". What am I doing wrong?
|
| I'm not completely certain of this, but some of the shutdown/cleanup code
| for KDE apps has historically been in KMainWindow (or descendants like
| KXMLGuiWindow, KParts.MainWindow).  So I'd try making Benup a subclass of
| one of those.

Yes, using KXmlGuiWindow solved the problem. This should be documented 
somewhere, e.g. in

http://www.riverbankcomputing.co.uk/static/Docs/PyKDE4/using.html

Thank you very much for your precious help, 

Benno. 
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