[Qt-interest] transparent child blocking events to the parentwidget.

[Jeroen De Wachter]

Hey Manish,

You could try setting the Qt::WA_TransparentForMouseEvents Widget
attribute and see if that solves your problem.

I haven't tried this though, I just came across the WA flag...

Kind regards,

Jeroen De Wachter


On Wed, 2010-01-13 at 11:35 +0100, Ulf-Alexander v.
Ceumern-Lindenstjerna wrote:
> Well  your transparent widget completely covers your parent widget.
> While it is rendered transparently, it still receives all input events.
> If you want the parent widget to receive the events you have to manually
> forward them yourself.
> 
> Think of your transparent widget as a glass window you can look through,
> but you still cannot touch what you see...
> 
> Cheers, Ulf
> 
> > -----Original Message-----
> > From: qt-interest-bounces at trolltech.com [mailto:qt-interest-
> > bounces at trolltech.com] On Behalf Of manish.s.sharma at nokia.com
> > Sent: Wednesday, January 13, 2010 11:16 AM
> > To: qt-interest at trolltech.com
> > Subject: [Qt-interest] transparent child blocking events to the
> > parentwidget.
> > 
> > Hi all,
> > 
> > I am creating a widget containing some lineedits and creating another
> > transparent widget and setting this transparent widget as child of the
> > widget containing the lineedits. Now when I do a show on the parent
> > widget and try to click on the lineeditors I cannot click it seems the
> > transparent child widget is consuming all the events. Isn't this a
> > wrong  bahaviour? What I was expecting was since the child widget is
> > transparent event should be going to the parent widget. I think it is
> a
> > bug or am I missing something fundamental?
> > 
> > Below is the code to reproduce the problem.
> > 
> > #include <QApplication>
> > #include <QLineEdit>
> > #include <QVBoxLayout>
> > 
> > int main(int argc, char** argv)
> > {
> >     QApplication app(argc, argv);
> > 
> >     QWidget *widget = new QWidget;
> >     QVBoxLayout *layout = new QVBoxLayout;
> >     layout->addWidget(new QLineEdit);
> >     layout->addWidget(new QLineEdit);
> >     layout->addWidget(new QLineEdit);
> >     widget->setLayout(layout);
> > 
> > 
> >     // creating a transparent widget and setting this widget as child
> >     // of above widget
> >     QWidget *transparentWidget = new QWidget;
> >     transparentWidget->setAttribute(Qt::WA_TranslucentBackground);
> >     transparentWidget->resize(widget->geometry().size());
> >     transparentWidget->setParent(widget);
> > 
> >     widget->show();
> >     app.exec();
> > }
> > 
> > 
> > Regards,
> > Manish
> > 
> > 
> 
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