Run-time error in QWizardPage when I connect a signal to a slot, and page is canceled

[falconium]

Hi,

PageCounter is a QWizardPage of a QWizard. This is the slot I'm using in it:

void PageCounter::refreshDescription(int selectedItem)
{
// this changes the text of a QPlainTextEdit based on the selected item in QComboBox:
plaintextDescriptionOfSelectedCounter->setPlainText(wizard->caller->getCounterDescription(originalCounterIDs.at(selectedItem)));
}

void PageCounter::refreshDescription(int selectedItem)
{
// this changes the text of a QPlainTextEdit based on the selected item in QComboBox:
plaintextDescriptionOfSelectedCounter->setPlainText(wizard->caller->getCounterDescription(originalCounterIDs.at(selectedItem)));
}

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Signal is a QComboBox currentIndexChanged(int) defined in PageCounter constructor:

connect(comboCounters, SIGNAL(currentIndexChanged(int)), this, SLOT(refreshDescription(int)));

connect(comboCounters, SIGNAL(currentIndexChanged(int)), this, SLOT(refreshDescription(int)));

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Everything works, except if I cancel the wizard, then it crashes the whole program.
Maybe I should disconnect the signal, but I don't know where. This is the only clue I have, since it had been working perfectly before I added connect.

Thx!

[falconium]

PageCounter::~PageCounter()
{
    disconnect(comboCounters, SIGNAL(currentIndexChanged(int)), this, SLOT(refreshDescription(int)));
}

PageCounter::~PageCounter()
{
    disconnect(comboCounters, SIGNAL(currentIndexChanged(int)), this, SLOT(refreshDescription(int)));
}

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I have put it into the destructor, but still the same.
Please, help, I cannot debug it, it simply crashes...

[falconium]

This has also appeared in Application Output tab.

ASSERT failure in QList<T>::at: "index out of range", file d:\Qt\2010.05\qt\include/QtCore/../../src/corelib/tools/qlist.h, line 455

It looks like QComboBox is destroyed sooner than SIGNAL/SLOT connection - just a guess. How could I avoid this?

[falconium]

Nobody knows it?

[zenzero-2001]

Hi,

I don't know the answer to your problem. But I think the argument for setPlainText could be a bit suspect. It is possible that wizard could be a null pointer? Sorry if I'm stating something you have already thought of