Convert Number to QString

Useful API of OString, converting number to QString

QString number ( long n, int base = 10 )
QString number ( ulong n, int base = 10 )
QString number ( int n, int base = 10 )
QString number ( uint n, int base = 10 )
QString number ( qlonglong n, int base = 10 )
QString number ( qulonglong n, int base = 10 )
QString number ( double n, char format = 'g', int precision = 6 )