change the default behavior of qt selectionModel so shift-selection only starts at the current item if the current item is also selected -

in qt, have item1, item2, item3 , item4 , do:

1. shift-select item1 item3
2. deselect them
3. then shift-select item4

the result both item3 , item4 selected. because qt considers item3 current item after step.2 , shift-selection starts selection range current item.

is there way can change default behavior shift-selection starts selection range current item only if current item selected? example, in previous case, after step 1-3 result item4 selected.