I have a problem with the configuration interface of a little plasmoid which I write at the moment. I have a little QTreeView where the user can see some informations.

In my header file I have

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private:
        QStandardItemModel *model;
        QStandardItem *parentItem;

I also have this function:

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void programm::createConfigurationInterface(KConfigDialog *parent)
{
    ...
    model = new QStandardItemModel;
    parentItem = model->invisibleRootItem();
    ui.tree->setModel(model);
    ...
}

and this:

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void programm::addGroup(QString icon, QString text)
{
    ...
    QStandardItem *item = new QStandardItem(KIcon(icon), text);
    parentItem->appendRow(item);
    parentItem = item;
    ....
}

All of this works fine at the first moment. But if I close the settingdialoge and reopen it, it sometimes crash at parentItem->appendRow(item). So I think parentItem points at uninitialised memory but I don't know why. I don't delete it.

I hope you can help me.

This is because everything created in createConfigurationInterface is automatically destroyed because it is a child of the Configuration dialog, which is destroyed when closed. I would recommend creating the model in init();

bcooksley wrote:This is because everything created in createConfigurationInterface is automatically destroyed because it is a child of the Configuration dialog, which is destroyed when closed. I would recommend creating the model in init();

Thanks, I see. I thought if I write it in the header it won't be deletet. Now I know it better

If you have managed to resolve the problem, could you please mark the thread as solved? Thanks in advance.