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ABL Reference
Handle Attributes and Methods Reference : INNER-LINES attribute

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
Applies to: BROWSE widget (column), COMBO-BOX widget, EDITOR widget, SELECTION-LIST widget
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.