How to display Details of Audio File in QTreeView

[owais_blore]

I need to display details of all .mp3 files present in my drives. I am using QTreeView to display. Here is the code:

// Displays Files in Detail View on Clicking Drive
void DetailView::on_DriveView_clicked(const QModelIndex &index)
{
    int m_count=0;
    QStandardItemModel *model = new QStandardItemModel(0,0);
    QString sPath = m_SystemModel->fileInfo(index).absoluteFilePath();
    m_SystemListViewModel->setRootPath(sPath);
    ui->DriveListView->setRootIndex(m_SystemListViewModel->index(sPath));
 
    m_SystemModel->setRootPath(QDir::currentPath());
    m_SystemModel->setFilter(QDir::NoDotAndDotDot | QDir::AllDirs );
    m_SystemListViewModel->setFilter( QDir::Files | QDir::NoDotAndDotDot );
 
    QStringList m_list;
    QDirIterator dirIt(sPath,QDirIterator::Subdirectories);
 
    while (dirIt.hasNext())
    {
        dirIt.next();
        if (QFileInfo(dirIt.filePath()).isFile())
        {
            if (QFileInfo(dirIt.filePath()).suffix() == "mp3" || QFileInfo(dirIt.filePath()).suffix() == ".avi")
            {
                m_list << dirIt.filePath();
 
                QModelIndex index = model->index(m_count, 0, QModelIndex());
                model->setHeaderData( 0, Qt::Horizontal, "File Name" );
                model->setHeaderData( 1, Qt::Horizontal, "Size" );
                model->setHeaderData( 2, Qt::Horizontal, "Type" );
                model->setHeaderData( 3, Qt::Horizontal, "Date Modified" );
 
                model->setData( index, dirIt.fileName(), Qt::DecorationRole );
                QStandardItem *item = new QStandardItem(dirIt.fileName());
                model->setItem(m_count, item);
 
                ui->DriveListView->setModel(model);
                m_count++;
            }
        }        
        m_SystemListViewModel->setNameFilterDisables(false);
    }
}

// Displays Files in Detail View on Clicking Drive
void DetailView::on_DriveView_clicked(const QModelIndex &index)
{
    int m_count=0;
    QStandardItemModel *model = new QStandardItemModel(0,0);
    QString sPath = m_SystemModel->fileInfo(index).absoluteFilePath();
    m_SystemListViewModel->setRootPath(sPath);
    ui->DriveListView->setRootIndex(m_SystemListViewModel->index(sPath));

    m_SystemModel->setRootPath(QDir::currentPath());
    m_SystemModel->setFilter(QDir::NoDotAndDotDot | QDir::AllDirs );
    m_SystemListViewModel->setFilter( QDir::Files | QDir::NoDotAndDotDot );

    QStringList m_list;
    QDirIterator dirIt(sPath,QDirIterator::Subdirectories);

    while (dirIt.hasNext())
    {
        dirIt.next();
        if (QFileInfo(dirIt.filePath()).isFile())
        {
            if (QFileInfo(dirIt.filePath()).suffix() == "mp3" || QFileInfo(dirIt.filePath()).suffix() == ".avi")
            {
                m_list << dirIt.filePath();

                QModelIndex index = model->index(m_count, 0, QModelIndex());
                model->setHeaderData( 0, Qt::Horizontal, "File Name" );
                model->setHeaderData( 1, Qt::Horizontal, "Size" );
                model->setHeaderData( 2, Qt::Horizontal, "Type" );
                model->setHeaderData( 3, Qt::Horizontal, "Date Modified" );

                model->setData( index, dirIt.fileName(), Qt::DecorationRole );
                QStandardItem *item = new QStandardItem(dirIt.fileName());
                model->setItem(m_count, item);

                ui->DriveListView->setModel(model);
                m_count++;
            }
        }        
        m_SystemListViewModel->setNameFilterDisables(false);
    }
}

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Have a look at my code, even though I have used setHeaderData for Size, Type and Date Modified, it gets displayed when run the application but when i click any drive, only File Name appears and rest doesn't get displayed. I am using QTreeView, as of now my code displays all the .mp3 files under Name category. I want to display the Size, Date Modified, Type etc details too. Here is sample pic:
File.JPG
How to achieve it?