sorry, but the Qt assitante does not work with me .
because i compiled the Qt on dirve c: from a while.
but now i copied the Qt from c: drive to d:
and the assitante does not work for that reason.
and it says that the documentation file does not exist on c:, but it exists on d:.
i will copy the Qt on c: to be able to open the assitante.
and thank you.