[SOLVED]How to make the Widget transparent with styleSheet

[sirnodin]

i konw other ways to make the widget transparent or having strange shape, but i wonder how to make it with styleSheet?

How to make the Widget transparent with styleSheet?
whent i write:
@
background-color:transparent
@
the backgournd of the widget turns out to be in black color.

[Sam]

Is it a QWidget or your custom widget that subclasses QWidget ? If you are creating your own custom widget that inherits from QWidget, you need to override the paintEvent() for your custom widget to make the stylesheet work.

eg :-

@void CustomWidget::paintEvent(QPaintEvent *event)
{
QStyleOption opt;
opt.init(this);
QPainter p(this);
style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this);
}@

you can have a look at "this":http://qt-project.org/wiki/How_to_Change_the_Background_Color_of_QWidget

[sirnodin]

Well, Thanks.

But I already know that, and in fact what u said was just what I did.

My problem is, i tried to give the Widget a color "transparent", but it won't work as what i think "transparent" is.

it turns out that the Widget got a black color rather than a "transparent" one. How to fix it?

[quote author="Sam" date="1355810845"]Is it a QWidget or your custom widget that subclasses QWidget ? If you are creating your own custom widget that inherits from QWidget, you need to override the paintEvent() for your custom widget to make the stylesheet work.

eg :-

@void CustomWidget::paintEvent(QPaintEvent *event)
{
QStyleOption opt;
opt.init(this);
QPainter p(this);
style()->drawPrimitive(QStyle::PE_Widget, &opt, &p, this);
}@

you can have a look at "this":http://qt-project.org/wiki/How_to_Change_the_Background_Color_of_QWidget[/quote]

[sirnodin]

Well, i add a
@
setAttribute(Qt::WA_TranslucentBackground, true)；
@
int the cpp file. it seems to work fine....
Maybe my problem is solved.

[Sam]

[quote author="sirnodin" date="1355812795"]Well, i add a
@
setAttribute(Qt::WA_TranslucentBackground, true)；
@
int the cpp file. it seems to work fine....
Maybe my problem is solved.[/quote]

Yeah i forgot to add that one. For reference there are some other topics "here":http://doc.qt.digia.com/qq/qq16-background.html and "here":http://qt-project.org/forums/viewthread/1107

Regards
Soumitra.