adjust Font size to a given rect when drawText

[patrik08]

I have to adjust a Font size, when the user resized Widget where I draw text in a given rectangle.
Can somebody to give me a hint or point me to the right example?
Thanks in advance

You can draw a arial 6point to a 2000 pixel QWidget and is not need to change point size
only think Vector ...

QPainterPath is your friend ...

void ButtonAction::paintText()
{
    QPainter *p = new QPainter(this);
    p->setRenderHint(QPainter::Antialiasing);
    const int borderI = 25;
    /* button text */
    QPainterPath textPath;
    textPath.addText(borderI,borderI * 2,fontText,textBut);  ////  fontText is any font() //// textBut text one line
    /* fix view from text */
    const QRectF reo = textPath.boundingRect();
    TXTrect = reo;
    /* tanslate text rect to rect window button */
    p->setWindow ( reo.x() , reo.y() ,  reo.width() , reo.height()  );
    /* color text */
    p->setPen(Qt::NoPen);
    p->setBrush(colText);
    p->drawPath(textPath);
    Pm = p->deviceMatrix();
    p->end();
}

void ButtonAction::paintText()
{
    QPainter *p = new QPainter(this);
    p->setRenderHint(QPainter::Antialiasing);
    const int borderI = 25;
    /* button text */
    QPainterPath textPath;
    textPath.addText(borderI,borderI * 2,fontText,textBut);  ////  fontText is any font() //// textBut text one line
    /* fix view from text */
    const QRectF reo = textPath.boundingRect();
    TXTrect = reo;
    /* tanslate text rect to rect window button */
    p->setWindow ( reo.x() , reo.y() ,  reo.width() , reo.height()  );
    /* color text */
    p->setPen(Qt::NoPen);
    p->setBrush(colText);
    p->drawPath(textPath);
    Pm = p->deviceMatrix();
    p->end();
}

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