INNER-LINES attribute
The number of data lines within a combo-box drop down list, editor widget, or selection list.
Data type: INTEGER
Access: Readable/Writeable
For combo boxes, this attribute has meaning only in Windows.
This attribute is more portable than the HEIGHT-CHARS attribute. For combo boxes, the value must be 3 or greater.
If a selection list or combo box is not already realized and you reference its INNER-LINES attribute, the AVM realizes the widget.
For browses, this attribute applies only to combo-box browse columns.