OpenEuphoria

Re: Matt re:setListviewIndex

• Posted by Tony Steward <figjam at nlc.net.au> Aug 01, 2001
• 437 views

Hi Matt & all Euphorians,
Thanks again Matt but the proc. you sent (Below) does not make the row set 
in setIndex for a listview visible. Ie it doesn't scroll into view 
automatically. I have played with it quite a bit but with my limited 
knowledge I cant make it do what I want. Also as you said with large LV it 
is very slow, how can I get it to only go through the selected items in the 
list to reset them.
Alternatively the earlier proc you sent me works fine I just need to know 
how to set the selected items to unselected.

Thanks again
Tony Steward

>
>----- Original Message -----
>From: "Tony Steward" <figjam at nlc.net.au>
>
> > Hi Matt or anyone who can help,
> > Matt sent me the routine below so I could set the index of a listview,
> > which works well thanks thankyou. At the moment when you set one index 
> that
> > index is made visible and highlighted. If you then set a second index both
> > are highlighted. I would prefer that when an index is set that the 
> previous
> > selection be cleared. Is this possible.
>
>You're correct.  That code only changes the status of the item you've
>specified, but doesn't 'unselect' the currently selected item(s).  I'm not
>certain when I sent that to you, but in my copy of .55, I've modified setIndex
>(did it on 1/26/01):
>
>I added integers:
>integer msg,
>-- added for listview:
>     start, check, ix, count
>
>and added an elsif clause that cycles through the listview and
>deselects/selects as appropriate.  It might be faster for larger listviews to
>merely get the selected group of items and deselect those, then selecting your
>list.
>
>elsif window_type[id] = ListView then
>
>     if atom( index ) then
>         index = { index }
>     end if
>
>     start = 0
>
>     result = struct_LVITEM( LVIF_STATE, start, 0, 0,
>         LVIS_SELECTED, 0, 0, 0 )
>
>     store( result, LVITEM_stateMask, LVIS_SELECTED )
>     count = sendMessage( id, LVM_GETITEMCOUNT, 0, 0)
>     while count do
>
>         ix = getLVItemlParam( id, start )
>         if find( ix, index ) then
>             store( result, LVITEM_state, LVIS_SELECTED )
>         else
>             store( result, LVITEM_state, 0 )
>         end if
>
>         VOID = sendMessage( id, LVM_SETITEMSTATE, start, result )
>         start += 1
>         count -= 1
>     end while
>
>     -- release the structure from memory
>     ix = new_memset()
>     manage_mem( ix, result )
>     release_mem( ix )
>     return
>
>
>=====
>Matt Lewis
>http://www14.brinkster.com/matthewlewis
>
>

Regards
Tony Steward


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