Combo WaitCursor and Toggle

I'm using AW.UI.Combo() with a huge amount of data (up to 1000 lines; I know its not the best idea).

Since it needs a while to render the list I would like to display a wait cursor after clicking the combo button.

I would also like to use the combo button as a toggle button so that the popup will when clicking the button again.

I did not yet find a way to do that (neighter by myself nor in the forum).

Does anybody have some code snippets?

Thanks