Version 1.41 or higher - important huge refactoring

Continues changing the store for the status variables from
the Windows Properties to the private member variables of
the class instance

Substitution of direct calls of _stprintf() by the new member
funciton appendString(), which

 - uses _sntprintf() instead of _stprintf (for safety)
 - keeps pointer for the next appending
 - keeps available space for appending
 - in the case of almost exhausting available space appends warning