On Friday 28 September 2007 07:56, jbd wrote:
I've got a small problem with an application i'm trying to port from
sarge to etch. Here is the minimal application which mimics the problem.
It's a simple QDialog with a QPushButton which triggers a KDirLister and
print the result on stdout. It works well as long as i don't import
khtml or kparts.
I'm running a clean debian etch system :
kdelibs : 4:3.5.5a.dfsg.1-8
python-kde3 : 3.15.2+20060422-3
python-qt3 : 3.16-1.2
The same code sample runs well on debian sarge but crash on debian etch
and ubuntu feisty. It seems that's i'm doing something wrong here.
It crashes here too (not on Debian). It appears to be related to the
'newItems' signal - that's where the backtrace indicates the crash is
originating. I have no idea what the cause is, but I think you can achieve
the same thing with the two changes below, and with those changes it works
here.
From looking at the comments in the KDE h files, it seems like there might be
some kind of timing issues related to the signals, but I have no idea why
importing other modules would trigger the problem.
Jim
# -*- coding: utf-8 -*-
import sys
from qt import QDialog, QPushButton, SIGNAL
from kdecore import KCmdLineArgs, KApplication, KURL
from kio import KDirLister
# Remove one or both of the comment to crash the application
#from khtml import *
#from kparts import * #
class TestCrash(QDialog):
def __init__(self, parent=None):
QDialog.__init__(self, parent)
button = QPushButton(Run kdirlister, self)
self._dirLister = KDirLister()
self.connect(button, SIGNAL(clicked()), self._openHome)
# self.connect(self._dirLister, SIGNAL(newItems(const
# KFileItemList)),
self.connect(self._dirLister, SIGNAL(completed ()),
self._slotNewItems)
self._slotNewItems)
def _openHome(self):
self._dirLister.openURL(KURL(/))
def _slotNewItems(self, items):
print =*50
# for item in items:
for item in self._dirLister.items ():
print item.url().prettyURL()
print =*50
def main():
try:
KCmdLineArgs.init(sys.argv, crash test, crash test,crash
test)
app = KApplication(True, True)
widget = TestCrash()
widget.show()
app.setMainWidget(widget)
res = app.exec_loop()
print Return value, res
except Exception, what:
print Exception catched:, str(what)
sys.exit(-1)
if __name__==__main__:
main()
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