help me for this code? (Sql server in Qt)

[complexcoding]

hi Entourage
help me for this code?
I do not understand the red part
#include <QtGui>
#include <QtSql>

#include "../connection.h"

void initializeModel(QSqlTableModel *model)
{
model->setTable("person");
model->setEditStrategy(QSqlTableModel::OnManualSubmit) ;
model->select();

model->setHeaderData(0, Qt::Horizontal, QObject::tr("ID"));
model->setHeaderData(1, Qt::Horizontal, QObject::tr("First name"));
model->setHeaderData(2, Qt::Horizontal, QObject::tr("Last name"));
}

QTableView *createView(QSqlTableModel *model, const QString &title = "")
{
QTableView *view = new QTableView;
view->setModel(model);
#if defined(Q_OS_SYMBIAN) || defined(Q_WS_MAEMO_5) || defined(Q_WS_SIMULATOR)
Q_UNUSED(title)
#else
view->setWindowTitle(title);
#endif
return view;
}

int main(int argc, char *argv[])
{
QApplication app(argc, argv);
if (!createConnection())
return 1;

QSqlTableModel model;

initializeModel(&model);

#if defined(Q_OS_SYMBIAN) || defined(Q_WS_MAEMO_5) || defined(Q_WS_SIMULATOR)
QTabWidget *tabWidget = new QTabWidget;
tabWidget->addTab(createView(&model), "View 1");
tabWidget->addTab(createView(&model), "View 2");

tabWidget->showMaximized();
#else
QTableView *view1 = createView(&model, QObject::tr("Table Model (View 1)"));
QTableView *view2 = createView(&model, QObject::tr("Table Model (View 2)"));

view1->show();
view2->move(view1->x() + view1->width() + 20, view1->y());
view2->show();
#endif

return app.exec();
}

thank you very much

[wysota]

Which red part? There are a couple of red parts here.

[complexcoding]

I'm working with a database in Qt
To display a simple table in the form
Unfortunately, I do not know nothing
Please ... Please help!

[wysota]

Read these: QTableView, QAbstractItemModel, model-view programming