SendMessage $1 ${LB_ADDSTRING} 1 "STR:$R0"ListBox has HSCROLL flag. But for enable horizontal scrollbar needed to send messageSystem::Call user32::SendMessage(i$1,i${LB_SETHORIZONTALEXTENT},i$5,t.r4)The problem is that i dont know how to get item width by LB_GETITEMRECT message.