FAR Manager 1.70 beta 4 offers the following scheme for working with DI_COMBOBOX and DI_LISTBOX lists:

• Dialog[Ex] start
  FarDialogItem.Param.ListItems - only for first initialization.
  
  
• DM_LISTADD
  Adds list item only, without associated data.
  
  
• DM_LISTINSERT
  Inserts list item only, without associated data.
  
  
• DM_LISTUPDATE
  Deletes UserData for the list item to be updated.
  Updates list item only, without associated data.
  
  
• DM_LISTSETDATA
  Associates new data with the list item, old data is deleted (if memory was allocated for it).
  
  
• DM_LISTGETDATA
  Returns value previously set by DM_LISTSETDATA.
  
  
• DM_LISTGETDATASIZE
  Returns size of associated data.
  
  
• DM_LISTGETITEM
  Returns list item only, without associated data.
  
  
• DM_GETDLGITEM
  Sets FarDialogItem.Param.ListPos variable.
  
  
• Dialog[Ex] completion
  Setting FarDialogItem.Param.ListPos variable.
  Deleting associated data (if memory was allocated for it).