CListView and LVS_OWNERDATA

Hi to everyone,

I use a virtual list with LVS_OWNERDATA style to show data from a recordset. How can I do to show a check box and to put a number in pDispInfo->item.lParam.
In OnGetDispinfo function, I try : if(pDispInfo->item.mask & LVIF_STATE)
but i doesn't work

thanks!