The rowsource in this case is an array, but it is an alias on other pages. It appears the only difference (other than yours is based on a class and ours is not) is the integral height. I cannot test it right now but I will later and get back to you...



>In our case the listbox is based on a class which has When and Init event. Also the listbox is in container. Did you try to set IntegralHeight to true? What is the row source for the list?
>
>I'm trying to figure out, which properties or environment settings produce this behavior...
>
>>dblclick has code
>>click has code
>>gotfocus has code
>>init has code
>>interactivechange has code
>>lostfocus has code
>>when has code
>>
>>>>>>So, you're saying, that it's a generic bug in VFP9 with listboxes on a pageframe?
>>>>
>>>>I'm wondering <s> if its an common anomoly with listboxes and containers/pageframes...
>>>
>>>In our case the listbox has This.Parent.Parent.Parent.aDEDataAccess as RowSource. The method code is in DoubleClick, the IntegralHeight property is set to true. The fontname and fontsize are not VFP default.
>>>
>>>What non default properties do you have for the listbox?