Filtering a TreeWidget

[soul_rebel]

I have tree widget and i want to filter, a certain kind of child

I wrote the following slot that gets triggered whenever the contents of the lineedit eBrowseFilter changes:

void    QMyClass::refilterBrowseTree()
{
    bool hide           = true;
    QTreeWidgetItem *c  = 0;
 
    QObjectList children = browseTree->children();
    browseTree->setUpdatesEnabled(false);
    for (int i = 0; i < children.count(); ++i)
    {
        c = (QTreeWidgetItem*)children.at(i);
 
        hide = false;
        if (c->type()==1000)
        {
            if (!c->text(0).contains(eBrowseFilter->text()))
                hide = true;
        }
        c->setHidden(hide);
    }
    browseTree->setUpdatesEnabled(true);
    browseTree->update();
}

void    QMyClass::refilterBrowseTree()
{
    bool hide           = true;
    QTreeWidgetItem *c  = 0;

    QObjectList children = browseTree->children();
    browseTree->setUpdatesEnabled(false);
    for (int i = 0; i < children.count(); ++i)
    {
        c = (QTreeWidgetItem*)children.at(i);

        hide = false;
        if (c->type()==1000)
        {
            if (!c->text(0).contains(eBrowseFilter->text()))
                hide = true;
        }
        c->setHidden(hide);
    }
    browseTree->setUpdatesEnabled(true);
    browseTree->update();
}

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The Program segfaults as soon as I enter something into eBrowseFilter... The Backtrace tells me it actually failed in QTreeWidget::setItemHidden()...
How can that be? Whats wrong?

Thanks for your help!

Disclaimer:
I know Qt4 has this great model-view-thing, but I personally think it rather inconvenient, since QTreeWidget doesnt allow me to setModel (its private), and reimplementing all the Item-based features for QTreeView looks like a lot of work (after all I am really happy with QTreeWidget, i just want to do some filtering).