Determines the first visible item in a dialog element.

The first visible item is the item displayed at the top of the dialog element. If the value is being set, the handle specified must belong to an item within the dialog element. In this case, the specified item will only become the first visible item if the scroll amount required to achieve this is within the bounds of the dialog element's scroll range (if any). For list view controls, the attribute may only be queried

Applies to	List box control, list view control, tree view control.
Data Type	HANDLE
Default Value	NULL-HANDLE
Possible Values	NULL-HANDLE / list box item handle