vertical slider

Hi

I'va a simple window (QMainWindow):

Code:

---

FormTransportOperacje::FormTransportOperacje(QString ID_transport, QWidget *parent) : QMainWindow(parent)
{
    this->setMaximumHeight(400);
    QWidget *base = new QWidget();
    QGridLayout *layout = new QGridLayout(base);
    QSqlQuery query("SELECT Imie, Nazwisko, Data_operacji, Nazwa_operacji FROM m_transporty_operacje AS Top LEFT JOIN m_uzytkownicy AS U ON (U.ID_u=Top.ID_uzytkownik) WHERE ID_transport="+ID_transport+" ORDER BY Data_operacji DESC");
 
    int i = 0;
    while (query.next()) {       
        QGroupBox *GbTMP= new QGroupBox(query.value(3).toString());        
        GbTMP->setMinimumHeight(70);
        GbTMP->setMaximumHeight(70);
        QGridLayout *layoutTMP = new QGridLayout();
        QDateTime DTData = query.value(2).toDateTime();
 
        QLabel *Uzytkownik = new QLabel(query.value(0).toString()+" "+query.value(1).toString());
        QLabel *Data_operacji = new QLabel(DTData.toString("yyyy-MM-dd HH:mm:ss"));
 
        GbTMP->setLayout(layoutTMP);
        layout->addWidget(GbTMP,i++,0,1,1);
    }
 
    base->show();
    this->setCentralWidget(base);
    this->move(((QApplication::desktop()->width()-this->width())/2),((QApplication::desktop()->height()-this->height())/2));
 
}

---

And when there are many records, the window extends beyond the boundary of screen.

How can I "freez" the size of window, and add the verticalslider when the content does not fit in the window?

use a QScrollArea as your central widget.

I've used:

Code:

---

QScrollArea *Sa = new QScrollArea();
    Sa->setWidgetResizable(true);
    Sa->setHorizontalScrollBarPolicy( Qt::ScrollBarAlwaysOff );
    Sa->setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
QWidget *base = new QWidget(Sa);
 
 
.
.
.
base->show();
    this->setCentralWidget(Sa);

---

and Scroll has appeard but ther is no active :/

Did you use QScrollArea::setWidget()?

Thanks! It's working.