2.5.43 ListWidth
An unsigned integer that specifies the width, in HIMETRIC units, of the ListBox part of a ComboBox control. The value SHOULD be set to zero for ListBox controls. A value of zero specifies that the ListBox part is the same width as the TextBox part.<7>
The file format default is 0x00, matches the TextBox part.
Applies to: ComboBox | ListBox