ScrollBar problem

Hi
I have a small problem in the vertical scrollbar

My issue is that , I have a QListView and QScrollbar in my mainwindow. The ListView is filled up with images ,
I need to scroll the images in the listview using the scrollbar.

you have a separate scrollbar instead of the default one provided by QListView? Can you explain more.

I have attached the screenshot for the same.
In the screenshot , you can see the images getting displayed in LISTVIEW, but I need to display the vertical scrollbar besides the LISTVIEW
How can I do it ?

what about listview->setVerticalScrollbarPolicy( Always show )?

That doesnt work

give a minimal compilable program that reproduces the problem.

Solved
I used
QScrollArea* scrollarea = new QScrollArea;
scrollArea->setWidget(this);
scrollArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysO ff);