Semi-transparency through parents' widgets

[Anatoly]

Hi all,
Can you help me make a widget transparent through parents' widgets. By that I mean making a widget transparent to the desktop (for example) while the parent widget is opaque.
I've tried stuff like

setStyleSheet("background-color: QColor(r,g,b,%);");
setAttribute(Qt::WA_PaintOnScreen);
setAttribute(Qt::WA_PaintUnclipped);

setStyleSheet("background-color: QColor(r,g,b,%);");
setAttribute(Qt::WA_PaintOnScreen);
setAttribute(Qt::WA_PaintUnclipped);

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but had no luck.
Thanks in advance!

[yogeshgokul]

Hi all,
Can you help me make a widget transparent through parents' widgets. By that I mean making a widget transparent to the desktop (for example) while the parent widget is opaque.
I've tried stuff like

setStyleSheet("background-color: QColor(r,g,b,%);");
setAttribute(Qt::WA_PaintOnScreen);
setAttribute(Qt::WA_PaintUnclipped);

setStyleSheet("background-color: QColor(r,g,b,%);");
setAttribute(Qt::WA_PaintOnScreen);
setAttribute(Qt::WA_PaintUnclipped);

To copy to clipboard, switch view to plain text mode 

but had no luck.
Thanks in advance!

Check this out
void setWindowOpacity ( qreal level )

[Anatoly]

Check this out
void setWindowOpacity ( qreal level )

Yeah, but doesn't that make the whole window transparent, including titlebar etc.? I need only the one widget to be transparent, while keeping all other stuff opaque.