>In my book it's a bug. Documentation have an 32767 limit for nItemID but I don't think it applies here. Probably an internal array is kept per column ?

>On The Other Hand it doesn't need a special workaround. I always believed if I'm using listbox either I should keep the element count too low or use a RowSourceType which is kind of cursor/table.

>You're saying it's populated from an SQL but RowSourceType = 2 is alias. Why not directly use RowSourceType = 3 ? It'd let you repopulate if need be just with a 'listbox.requery()'.
I tend to use RowSourceType=3. Anyway it doesn't matter. Whenever I use a similar rowsource I never use ListIndex but directly alias.field to get what I want (any movement in listbox moves pointer in its cursor). It's shorter to code and reliable.

Cetin,

If it is (or seems to be) a bug, do you know if it is reported or if MS has some to say about?

It's RowSourceType=2 because I'm not using the SQL Select as the RowSource, in fact I'm using the result cursor of a previously executed SQL Select.

 Select      IT_Filial,              ;
             IT_CodItem,             ;
             IT_Descr                ;
 From        InvPrd_Itens            ;
 Into Cursor CurItens                ;
 Where       IT_Filial = SelFilial   ;
 Order By    IT_CodItem

 cCadItensRowSource = "Space (2) + CurItens.IT_Filial, IT_CodItem, IT_Descr"

Think the workaround I used is what you described:

Add Object lstCadItens  as cPtrListBox   with Top              	=  28               , ;
                                              Left             	=  15               , ;
                                              Height           	= 340               , ;
                                              Width            	= 435               , ;
                                              RowSourceType     =   2               , ;
                                              RowSource         = cCadItensRowSource, ;
                                              ColumnCount      	=  3                , ;
                                              ColumnWidths     	= "70, 120, 220"

 . . .

 Procedure cmdDetails.Click
*          ---------- -----
           Select CurItens
           GoTo   ThisForm.lstCadItens.ListIndex

           wIT_Filial  = SelFilial
           wIT_CodItem = IT_CodItem

           ShowDetails ()
 EndProc

I use ListBoxes a lot because IMO grids are very cumbersome to use and, as you can see above, in a simple Add Object I do all I want to have a simple display of itens (cPtrListBox is a class based in the ListBox class that has all properties I commonly use. BTW, I define all my forms programatically).

Many thanks for your reply!

Fernando