[QT4] Trivial question(s)

Hello all !

I have some new questions but I'll begin with a "simple" one.

ui_muref.h (automatically generated from the .ui file itself from QtDesigner)

Code:

#ifndef UI_MUREF_H
#define UI_MUREF_H
 
#include <QtCore/QVariant>
    ...// (other default includes...)
 
class Ui_MainWindow
{
public:
    ...
    QTreeView *treeView;
    ...

ui_murefimpl.h

Code:

#ifndef UI_MUREFIMPL_H
#define UI_MUREFIMPL_H
 
#include "ui_muref.h"
#include <qmainwindow.h>
#include <qwidget.h>
#include <qtreeview.h>
 
class ui_murefImpl : public QMainWindow
{
    Q_OBJECT
public:
    ui_murefImpl(QWidget *parent = 0);
    QTreeView *qTree;
    void buildQTree();
private:
    Ui::MainWindow ui;
private slots:
    void slotQuit();
 
    // test slots
    void slotTest();
};
#endif

ui_murefimpl.cpp

Code:

#include "ui_murefimpl.h"
#include <qwidget.h>
#include <qtreeview.h>
#include "ui_muref.h"
 
ui_murefImpl::ui_murefImpl(QWidget *parent) : QMainWindow(parent)
{
    ui.setupUi(this);
    // do connections
    connect(ui.actionQuit, SIGNAL(activated()), this, SLOT(slotQuit()));
 
    // test slots
    connect(ui.actionTest, SIGNAL(activated()), this, SLOT(slotTest()));
    // end
}
 
void ui_murefImpl::slotTest()
{
    ui_murefImpl::buildQTree();
}
 
void ui_murefImpl::buildQTree()
{
   // what to put here ?
}

The question is : "how to access to the treeView which is in the ui_muref.h" ??
My goal is to "configure" it by default with the function "buildQTree()" !

Thanks a lot for the first who solve this (noob) problem :p !