>>Have run into occasions where on some computers, comboboxes and dropdown lists don't function quite right. In particular if you use a mouse, you can click on the control, the list does appear, but clicking on an item in the list does not make a selection when you click on a list item (i.e. the list is dismissed w/o making a selection). On the other hand, if you use the keyboard you can indeed make a selection. Does anybody have an idea of what may be causing this issue ?
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>Is it really only on some computers? I've had issues when a combo is bound to a property, having problems with getting the value to take.
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>Tamar

As I'd stated, I'd only observed this behavior on only a handful of installations -- I'm wondering if it might be a "side-effect" of various accessibility settings like "sticky keys" or "mouse lock".

The combobox(es) in question are rather "vanilla" (i.e. quite plain in configuration) -- the style is set so they work as dropdown list, and they're populated with AddListItem() (and generally not populated with more than 20 items) and in most of those cases the VALUE property is the same as LISTINDEX. The same comboxes are working as expected on other computers. The problem seems to be isolated to only a handful of computers when I've seen it occur.

Unfortunately I didn't get much of a chance to "play around" on the systems in question long enough to see if I could notice if the usual "tracking" behavior of the listbox was present (after clicking on listbox, the selection bar "follows" the mouse).