is it possible to have the mousewheel scroll the combobox
dropdown... say it displays 5 items at a time, but there are 100
items, can the mousewheel scroll the scrollbar downward instead of
having to grab it and drag??
Yes, this can be done. All we do is add a listener to the
Mouse when the user opens the combobox. I've made a little example
for you (i called my instance of the combobox componend "my
combobox"), feel free to use it if you like.