Specifies the horizontal spacing (in pixels) between adjacent columns of arranged list view items for icon-based list views. A value of zero is interpreted as "unspecified", implying that the control's default horizontal spacing is used.

This attribute, together with the SPACING-Y attribute, thus determines the size of the logical grid used by the ARRANGE action.

Note that the spcified value is automatically scaled on control creation, if necessary, if the parent dialog's AUTO-ADJUST attribute is set to TRUE.

For more information, please refer to the article Working with List View Controls.

Applies to	List view control.
Data Type	I4
Default Value	0
Possible Values	0 - 9999