QListWidget

#include "dialog.h"
#include "ui_dialog.h"
#include <QtCore>
#include <QtGui>
#include <QMessageBox>

Dialog::Dialog(QWidget *parent) :
    QDialog(parent),
    ui(new Ui::Dialog)
{
    ui->setupUi(this);

    for(int i = 0; i < 9;i++)
    {
        ui->listWidget->addItem(QString::number(i)+" item here");
    }
}

Dialog::~Dialog()
{
    delete ui;
}



void Dialog::on_pushButton_clicked()
{
    ui->listWidget->currentItem()->setText("boatlet");
    QListWidgetItem *itm=  ui->listWidget->currentItem();
    itm->setTextColor(Qt::red);
    itm->setBackgroundColor(Qt::blue);
}