[PyQt] possible regression

Sebastian Elsner sebastianelsner at freenet.de
Tue Jul 10 08:40:20 BST 2012

Thank you I understand your point. I was just wondering why it worked in 
previous versions and thought this might be a bug.

On 07/09/2012 06:20 PM, Phil Thompson wrote:
> On Mon, 09 Jul 2012 17:28:31 +0200, Sebastian Elsner
> <sebastianelsner at freenet.de> wrote:
>> Hello,
>> I am updating some code to use PyQt-Py2.6-x86-gpl-4.9.4-1.exe. I have
>> previously used PyQt-Py2.6-x86-gpl-4.8.6-1.exe. With the code attached I
>> get a runtime error in 4.9.4 I did not get in the 4.8.6.
>> Please execute the attached py file and click the open button in the
>> window appearing. This opens a dialog. Close the dialog and click the
>> signal button. Here I am getting an error:
>> Traceback (most recent call last):
>>     File "pyqt_runtimeerror.py", line 50, in check
>>       print "test checked", self.isChecked()
>>     File "pyqt_runtimeerror.py", line 28, in isChecked
>>       return self.checkBox.isChecked()
>> RuntimeError: wrapped C/C++ object of %S has been deleted
> The %S is obviously a (sip) bug, but it doesn't affect anything.
>> To get rid of the problem I can comment line 8 (self.dialog = parent).
>> Is this something I should fix in my app and was the 4.8.6 behaviour
>> unintened or is this a bug?
> The current behaviour seems perfectly reasonable to me. The C++ dialog and
> its contents are destroyed when the dialog is closed. The corresponding
> Python objects are still alive because you have an explicit reference. If
> you remove that explicit reference (by commenting out line 8) then the
> Python objects get garbage collected. You don't get an exception in that
> case because the connection was broken when the slot object was garbage
> collected.
> Phil

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