Subclassing QTreeWidgetItem - qt

Question

I am trying to subclass QTreeWidgetItem so I can fill-in class with data I need.
Went through all the code and couldn't find one complete example on how to do it right.
In my implementation something is wrong because application won't start up, but if I do it with QTreeWidgetItem then it works without any problems.
So I have created subclass as H file:
#ifndef XITEM_H
#define XITEM_H
#include <QTreeWidget>
class XItem : public QObject,public QTreeWidgetItem
{
Q_OBJECT
public:
XItem ();
void setText(int column, const QString &atext);
void addChild(QTreeWidgetItem *child);
};
#endif
And C file:
#include "X.h"
XItem ::XItem (): QTreeWidgetItem(UserType)
{
}
void XItem::setText(int column, const QString &atext){
setText(column,atext);
}
void XItem::addChild(QTreeWidgetItem *child){
addChild(child);
}
And code that runs it all:
QTreeWidget * tree = ui->treeWidget;
QTreeWidgetItem * topLevel = new QTreeWidgetItem();
topLevel->setText(0, "This is top level");
for(int i=0; i<5; i++)
{
//QTreeWidgetItem * item = new QTreeWidgetItem();
XItem *item = new XItem();
item->setText(0,"item " + QString::number(i+1));
topLevel->addChild(item);
}
tree->addTopLevelItem(topLevel);
If I run it like this application hangs and if I comment:
XItem *item = new XItem();
and un-comment:
QTreeWidgetItem * item = new QTreeWidgetItem();
it works.
Could anyone help out on this please.
Kind regards!

Answer 1

Anyway... after all years still simple mistake as this one can come along long hours coding.
ERROR:
void XItem::setText(int column, const QString &atext){
setText(column,atext);
}
void XItem::addChild(QTreeWidgetItem *child){
addChild(child);
}
Should be:
void XItem::setText(int column, const QString &atext){
QTreeWidgetItem::setText(column,atext);
}
void XItem::addChild(QTreeWidgetItem *child){
QTreeWidgetItem::addChild(child);
}