Qt 数值进制转换
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QString::number(63,16).toUpper() //"3F"
QString::number(63,16) //“3f”
QString QString::number ( long n, int base = 10 ) [static]
Returns a string equivalent of the number n according to the specified base.
The base is 10 by default and must be between 2 and 36. For bases other than 10, n is treated as an unsigned integer.
long a = 63;
QString s = QString::number(a, 16); // s == "3f"
QString t = QString::number(a, 16).toUpper(); // t == "3F"
See also setNum().
QString QString::number ( double n, char format = 'g', int precision = 6 ) [static]
Returns a string equivalent of the number n, formatted according to the specified format and precision. See Argument Formats for details.
Unlike QLocale::toString(), this function does not honor the user's locale settings.
See also setNum() and QLocale::toString().
QString QString::number ( ulong n, int base = 10 ) [static]
This is an overloaded function.
QString QString::number ( int n, int base = 10 ) [static]
This is an overloaded function.
QString QString::number ( uint n, int base = 10 ) [static]
This is an overloaded function.
QString QString::number ( qlonglong n, int base = 10 ) [static]
This is an overloaded function.
QString QString::number ( qulonglong n, int base = 10 ) [static]
This is an overloaded function.
QString::number(63,16) //“3f”
QString QString::number ( long n, int base = 10 ) [static]
Returns a string equivalent of the number n according to the specified base.
The base is 10 by default and must be between 2 and 36. For bases other than 10, n is treated as an unsigned integer.
long a = 63;
QString s = QString::number(a, 16); // s == "3f"
QString t = QString::number(a, 16).toUpper(); // t == "3F"
See also setNum().
QString QString::number ( double n, char format = 'g', int precision = 6 ) [static]
Returns a string equivalent of the number n, formatted according to the specified format and precision. See Argument Formats for details.
Unlike QLocale::toString(), this function does not honor the user's locale settings.
See also setNum() and QLocale::toString().
QString QString::number ( ulong n, int base = 10 ) [static]
This is an overloaded function.
QString QString::number ( int n, int base = 10 ) [static]
This is an overloaded function.
QString QString::number ( uint n, int base = 10 ) [static]
This is an overloaded function.
QString QString::number ( qlonglong n, int base = 10 ) [static]
This is an overloaded function.
QString QString::number ( qulonglong n, int base = 10 ) [static]
This is an overloaded function.
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