How to apply a QStyle to a widget

[Luc4]

Hi! I'm trying to apply a custom style to a widget. It seems to work correctly when I try to apply it using:

QApplication::setStyle(style);

QApplication::setStyle(style);

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but I would like to apply this only to a specific widget, so I tried:

QGraphicsView* view = new QGraphicsView(this);
view->setStyle(style);

QGraphicsView* view = new QGraphicsView(this);
view->setStyle(style);

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but this seems not to work. Any idea why?
Thanks!