mfc list control scrolling shows additional grid lines

i mfc list control news perspective grid lines arrangement information vaguely spreadsheet manner.

sometimes user scrolls plumb by control, additional grid lines drawn, looks terrible.

this does occur slider mousewheel used scroll, wholly small down arrow symbol during bottom confine control used.

it seems occurs distance list control window an accurate even array rows, biased quarrel manifest during bottom.

if i adjust distance list control there biased rows visible, problem solved. however, seem way run another computer, presumably since array pixels indifferent quarrel changes.

i am presumption an communication between shade resolution, arise distance "dialog units".

i speculation i need programmatically force distance control created. nonetheless size?

i have attempted controlling approximateviewrect() slight nonetheless i can't work. maybe slight does know news view?

the method, i suppose, emanate possess specialization clistctrl over-ride whatever slight doing scrolling. seems approaching lot work.

this screenshot shows closely associated problem where grid lines missing

and here additional grid lines

the wholly inadequacy between twin between scrolls ideally few pixels opposite loyal distance control.