go next screen

[sabbu]

i have been create a listwidget and add three items i want when touch on item then open new screen.but i can't success please help me i send the code
////////////////header//////////

#ifndef MYWIDGET_H
#define MYWIDGET_H
 
#include <QWidget>
#include<QtGui>
namespace Ui {
    class MyWidget;
}
class QListWidget;
class QListWidgetItem;
class MyWidget : public QWidget
{
    Q_OBJECT
 
public:
    explicit MyWidget(QWidget *parent = 0);
    ~MyWidget();
private slots:
void itemClicked(QListWidgetItem *item);
 
private:
 
    QListWidget *m_myListWidget;
   QPushButton *widget2;
    QPushButton *widget3;
 
 
 
};
 
#endif // MYWIDGET_H

#ifndef MYWIDGET_H
#define MYWIDGET_H

#include <QWidget>
#include<QtGui>
namespace Ui {
    class MyWidget;
}
class QListWidget;
class QListWidgetItem;
class MyWidget : public QWidget
{
    Q_OBJECT

public:
    explicit MyWidget(QWidget *parent = 0);
    ~MyWidget();
private slots:
void itemClicked(QListWidgetItem *item);

private:

    QListWidget *m_myListWidget;
   QPushButton *widget2;
    QPushButton *widget3;

     

};

#endif // MYWIDGET_H

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/////////////////////cpp////////////////

#include "mywidget.h"
#include "ui_mywidget.h"
 
MyWidget::MyWidget(QWidget *parent) :
    QWidget(parent)
 
{
 
    m_myListWidget = new QListWidget(this);
    new QListWidgetItem(tr("shahid"), m_myListWidget);
    // new QListWidgetItem(tr("Fir"), m_myListWidget);
    connect( m_myListWidget, SIGNAL(itemClicked(QListWidgetItem *)), SLOT(itemClicked (QListWidgetItem *)));
 
}
void MyWidget::itemClicked(QListWidgetItem *item)
{
 
      widget2 = new QPushButton("Text message");
      widget3 = new QPushButton("Create Message");
      QVBoxLayout *layout =new QVBoxLayout(this);
      layout->addWidget(widget2);
      layout->addWidget(widget3);
      setLayout(layout);
 
 
}
 
 
MyWidget::~MyWidget()
{
     delete m_myListWidget;
}

#include "mywidget.h"
#include "ui_mywidget.h"

MyWidget::MyWidget(QWidget *parent) :
    QWidget(parent)

{

    m_myListWidget = new QListWidget(this);
    new QListWidgetItem(tr("shahid"), m_myListWidget);
    // new QListWidgetItem(tr("Fir"), m_myListWidget);
    connect( m_myListWidget, SIGNAL(itemClicked(QListWidgetItem *)), SLOT(itemClicked (QListWidgetItem *)));

}
void MyWidget::itemClicked(QListWidgetItem *item)
{

      widget2 = new QPushButton("Text message");
      widget3 = new QPushButton("Create Message");
      QVBoxLayout *layout =new QVBoxLayout(this);
      layout->addWidget(widget2);
      layout->addWidget(widget3);
      setLayout(layout);

   
}


MyWidget::~MyWidget()
{
     delete m_myListWidget;
}

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please any one can help me