Ok, the code works perfectly, without declaring or creating any instance
of the class.
I have only one note... I get a segmentation fault the first time I used
it cause there was a destructor that was freeing the class itself
without checking if it was assigned (a check was useless in the "normal"
way of using it).
I resolved with a "if not assigned" check like the one you gived me.
Thanks again
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