Removes item from combo box in ActiveX list object.
Note: Two options: 1) Specify both sItem AND sCategory; or 2) Set sItem = "", sCategory = "", and specify only sItemID.
Syntax
CSV_ListBox_RemoveItem(hList,sItem,sCategory,sItemID)
#hList:
Handle to list object.
#sItem:
Item to remove from list.
#sCategory:
Category of item.
#sItemID:
ID of item.
Return Value
0 if successful, otherwise -1.