>>No, Combobox doesn't have it, only ListBox has.
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>Indeed; now I see it. I was checking the help file for ComboBox, and it included the MultiSelect property - must be the same text for both ListBox and ComboBox.
>
>>BTW, what would be a good name for such a listbox class?
>
>Something that reflects its function. Since it is supposed to imitate a ComboBox, perhaps ComboMulti or ComboMultiSelect; or, since it is a collapsable ListBox, CollapseListBox, CollapsableListBox, etc.

I called it Listbox_Expanded, though I like this name better. May be I still can re-name it, though.