Rhayader Thanks A TON...!! for your help and time. I learned few very very important things.

Forgive my ignorance on the problem. But, i am still thinking that there were 2 classes with 2 listwidget as members, i was thinking to have a friend function sort of thing which can be called as slot.

Actually, i also don't like my implementation but currently i am experimenting and i am not aware of many things. And sorry for those headers, that belong to my original project, i forgot to remove it for discussion here.

But thanks a Ton !
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Dipesh