Setting up the contents of treewidget in a slot of a subclass of treewidget not work!

[prakash437]

Dear All,
Yet another novice question

I have a subclass of QTreeWidget, called, QFileBrowser.

class QFileBrowser : public QTreeWidget
{
    Q_OBJECT
 
public:
    QFileBrowser(QWidget *parent);
    ~QFileBrowser();
public slots:
    void onFilesFoldersSelected(QDir*, QStringList*);
    void onFileModeToggled(bool);
private:
    QFileDialog::FileMode selMode;
}

class QFileBrowser : public QTreeWidget
{
    Q_OBJECT

public:
    QFileBrowser(QWidget *parent);
    ~QFileBrowser();
public slots:
    void onFilesFoldersSelected(QDir*, QStringList*);
    void onFileModeToggled(bool);
private:
    QFileDialog::FileMode selMode;
}

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And in the main window, I have implemented a signal that is connected to the slot, onFilesFoldersSelected.

QObject::connect(this, SIGNAL(filesFoldersSelected(QDir*, QStringList*)), ui->twFileBrowser, SLOT(onFilesFoldersSelected(QDir*, QStringList*)));

QObject::connect(this, SIGNAL(filesFoldersSelected(QDir*, QStringList*)), ui->twFileBrowser, SLOT(onFilesFoldersSelected(QDir*, QStringList*)));

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Everything works fine and whenever, i am emitting a signal, I land in the slot. I also see that the pointers point to the data passed in the main window. However, when I try to set the tree as in below, I could see nothing ..

QList<QTreeWidgetItem *> itemList;
        QTreeWidgetItem treeItem((QTreeWidget *)this, *strList, 0);
        itemList.append(&treeItem);
        this->insertTopLevelItems(0, itemList); // I Expected this to do the job of inserting items in the tree 
 
        for (int i=0; i<strList->size(); i++)
            qDebug() << strList->at(i); // I can see that the strList has the strings that I am passing !!!

QList<QTreeWidgetItem *> itemList;
        QTreeWidgetItem treeItem((QTreeWidget *)this, *strList, 0);
        itemList.append(&treeItem);
        this->insertTopLevelItems(0, itemList); // I Expected this to do the job of inserting items in the tree 

        for (int i=0; i<strList->size(); i++)
            qDebug() << strList->at(i); // I can see that the strList has the strings that I am passing !!!

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I am sure, im overlooking something small. Could anyone point me to that please !!!

Thanks !!
P.