rem: QRegExp rx( "[A-Za-z\\-\\.]+@[A-Za-z\\-\\.]+\\.[A-Za-z]+" );
add: QRegExp rx( "[A-Za-z\\-\\.\\_0-9]+@[A-Za-z\\-\\.\\_0-9]+\\.[A-Za-z]+" );
context:     EmailValidator()      : QRegExpValidator( 0, "EmailValidator" )    {      QRegExp rx( "[A-Za-z\\-\\.]+@[A-Za-z\\-\\.]+\\.[A-Za-z]+" );      setRegExp( rx );    }