Many thanks to all. I reorganized the various datawindow scripts (open and 16 ddlb) and now in Win 10 it works almost perfectly.at 99% while with win 7 it is always 100% OK. So the result is much better but I cannot prevent me from thinking that there is still a very very slight problem that I can explain by three possible causes. The quickness from changing a ddlb choice to another, the use of the option showlist = TRUE and the position of the cursor (mouse or tactile) when clicking on a selected value. I send you an image of the datawindow wishing it can be visible. The aim is to display gradually multiple levels of a tree composed of activity costs, until 15 levels, so it is very dynamic with hide and reset functions..
Best regards, Didier
