ScrollBar

[A9am]

Hai all,



If i don't want to scroll the contents of scrollarea by scrolling mousewheel and i want to scroll the contents of scrollarea only by dragging the slider of scrollarea , how can i do that?



Thanks.

[Lykurg]

Subclass the scrollarea and reimp QAbstractScrollArea::wheelEvent() that it does nothing, or install an event filter, that eats the mouse wheel event.

[A9am]

Hai,

Thanks Lykurg for your reply.I have installed eventfilter for mousewheel. But still the contents are scrolled when I scroll the mousewheel.Why so?Am I doing anything wrong?

bool MainWindow::eventFilter(QObject *obj, QEvent *event)
{

if (obj == ui->scrollArea)
{
if (event->type() == QEvent::Wheel)
{

return true;
}
else
{
return false;
}
}
else
{
return QMainWindow::eventFilter(obj, event);
}

}




Thanks.

[Lykurg]

Hi, I can't try it right now, but also try to use the viewport of the scroll view: QAbstractScrollArea::viewport(). Also see if the event filter is actually called.

[A9am]

Hi,

Yes, i have called eventfilter in constuctor of class .


ui->scrollArea->installEventFilter(this);


Now I will try viewport as you said.


Thanks

[A9am]

What I want to do is , I have an Image in scrollarea . I dont want to scroll the contents using mousewheel.Instead I want to zoom the image to the mouse point by mousewheel.So i thought to adjust the scrollbar position according to the mouse point.For that I need to disable the scrolling option.But I want scrollbars too. How can I do this?