property Items.ItemAppearance(Item as HITEM) as AppearanceEnum
Specifies the item's appearance while it's of ActiveX type.

TypeDescription
Item as HITEM A long expression that indicates the item's handle that was previously created  by InsertControlItem property.
AppearanceEnum An AppearanceEnum value that indicates the item's appearance.

Use the ItemAppearance property to specify the item's appearance if the item is of ActiveX type. Use the InsertControlItem property to insert an ActiveX control inside. Use the ItemObject property to access the object being created by the InsertControlItem property. Use the ItemHeight property to specify the height of the item when containing an ActiveX control.