Is There a Vertical Scrollbar for the selectManyListbox?

[Daniel Gee]

According to the book I read, there is a scrollbar for the <h:selectManyListbox>.

I created a list box but did not see a scrollbar. Therefore, I surrounded the list box with:

<h:panelGroup style="width: 220px; height: 100px; overflow: auto;">
.....
</h:panelGroup>

to display a scrollbar. But the vertical scrollbar is too far away from the border of the list box.

I wonder whether I am doing it right. Is there a way to show a scrollbar by using the <h:selectManyListbox>? Or, is there a way to make the scrollbar generated by the code above be right next to the border of the list box?

[Daniel Gee]

Let me answer my own question.

We can use the "size" attribute in the panelGroup tag. For example, we can specify:

size = "5"

If our list box has more than 5 elements, the vertical scrollbar will show up automatically.