QPrintPreviewDialog show Text from Database

[Guest]

Im actually loading long Textblocks from a Database and want to show them in a QPrintPreviewDialog. But i dont find something how to append the textblocks to the page. How is it possible to append the textblocks from top to the bottom? everytime i need to set the QPainter Rect and the text overwrites in the first line. I didnt found anything in the Internet. there are only Examples how to show single lines, but not many textblocks. maybe i use QTextDocument too? Here is my actually code.

void PrintDateRangeForm::on_pbAccept_clicked()
{
    GDatabase db;
    QVector<QByteArray> cryptedEntrys;
    BigAES crypt;
    QDate from, to;

    from = QDate::fromString(ui->leFrom->text());
    to = QDate::fromString(ui->leTo->text());

    db.selectEntryBetween(&cryptedEntrys, &date, from, to);

    for (int i = 0; i < cryptedEntrys.count(); i++)
    {
        entrys.append(crypt.Decrypt(QByteArray::fromHex(cryptedEntrys[i]), aesKey));
    }

    QPrinter printer;
    printer.setPageMargins (15,15,15,15,QPrinter::Millimeter);

    QPrintPreviewDialog preview(&printer, this);
    preview.setWindowFlags ( Qt::Window );
    connect(&preview, SIGNAL(paintRequested(QPrinter *)), SLOT(printPreview(QPrinter *)));
    preview.exec();
}

void PrintDateRangeForm::printPreview(QPrinter *printer)
{
    QPainter *painter = new QPainter(printer);
    int w = printer->pageRect().width();
    int h = printer->pageRect().height();
    QRect page( 0, 0, w, h );
    for (int i = 0; i < entrys.count(); i++)
    {
        painter->setFont(QFont("Tahoma",11));
        painter->drawText(page, Qt::AlignTop | Qt::AlignLeft, date[i].toString());
        //painter->setFont(QFont("Tahoma",9));
        //painter->drawText(10, 11, QString(entrys[i]));
    }
    painter->end();
}

[Guest]

I have found a way to do that, but now i have another problem. From the Documentation i read that setPageSize() automatically sets page breaks for new pages, but that doesnt happen. someone have an idea?

doc.setPageSize(QSizeF(printer->pageRect().size()));

[Guest]

nobody has an idea how to make page breaks?