How to set the opacity of a widget whose parent is not NULL?

[stevewang]

Is that possible?

Thanks.

[raven-worx]

@
QGraphicsOpacityEffect* opacityEffect = new QGraphicsOpacityEffect(this);
opacityEffect->setOpacity( 0.7 );
this->setGraphicsEffect(opacityEffect);
@

[stevewang]

Cool ! Thanks.
[quote author="raven-worx" date="1390294777"]@
QGraphicsOpacityEffect* opacityEffect = new QGraphicsOpacityEffect(this);
opacityEffect->setOpacity( 0.7 );
this->setGraphicsEffect(opacityEffect);
@[/quote]