Convert to painter

I tied convert this stylesheet to painter, but I'm failed.

stylesheet

Code:

---

"background: qlineargradient(x1: 0, y1: 0, x2: 0, y2: 1, stop: 0 #e7effd, stop: 1 #cbdaf1);"

---

painter

Code:

---

QLinearGradient linearGrad(0, 0, 0, 1);
linearGrad.setColorAt(0, QColor("#e7effd"));
linearGrad.setColorAt(1, QColor("#cbdaf1"));
 
painter->fillRect(option.rect, QBrush(linearGrad));

---

What is wrong ?

linearGrad(0,0,0,1) will make you a gradient that is 0 pixels wide and 1 pixel high. That's probably not what you want. Either set a different Spread for the gradient or use absolute (as opposed to relative used by style sheets) coordinates.