Article # 396, added by Geoworks, historical record
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Linking GenItemGroups using ATTR_GEN_ITEM_GROUP_LINK.



Q. Are linked GenItemGroups currently supported? I tried without
   success to use this feature. The documentation states that a
   selection is exclusive across all the linked groups, but that's
   no how it worked for me.

A. Linked Gen Item groups are supported (use ATTR_GEN_ITEM_GROUP_LINK),
   but you have to do most of the work yourself.

   To get them to work, have each linked GenItemGroup send out the same
   status message (ATTR_GEN_ITEM_GROUP_STATUS_MESSAGE). In the handler
   for this message, find out what item has been selected and broadcast
   that selection (with MSG_GEN_ITEM_GROUP_SET_SINGLE_SELECTION) to each
   item group. Since each Item in all the Item Groups should have a
   unique identifier, only one item will be selected.