Rendering SVG on a paint event

[Luc4]

Hi! I'm trying to paint a SVG in a QGraphicsItem in the paint event. I did it this way:

QSvgRenderer svg(QString("SCD_shadow.svg"), this);
svg.render(painter);

QSvgRenderer svg(QString("SCD_shadow.svg"), this);
svg.render(painter);

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Unfortunately nothing is rendered. I also tried with a specific rect, but still nothing is rendered. Any idea why? I tried to build a QSvgWidget and it works fine.
Thanks for any advice!