[Qt]用QString得到16進位制,2進位制等的字串並自動填0
阿新 • • 發佈:2019-01-06
原創文章,歡迎轉載。轉載請註明:轉載自 祥的部落格
原文連結:https://blog.csdn.net/humanking7/article/details/85782122
函式原型
QString arg(int a, int fieldWidth = 0, int base = 10, QChar fillChar = QLatin1Char( ' ' )) const
QString arg(uint a, int fieldWidth = 0, int base = 10, QChar fillChar = QLatin1Char( ' ' )) const
QString arg (long a, int fieldWidth = 0, int base = 10, QChar fillChar = QLatin1Char( ' ' )) const
QString arg(ulong a, int fieldWidth = 0, int base = 10, QChar fillChar = QLatin1Char( ' ' )) const
QString arg(qlonglong a, int fieldWidth = 0, int base = 10, QChar fillChar = QLatin1Char( ' ' )) const
QString arg(qulonglong a, int fieldWidth = 0, int base = 10, QChar fillChar = QLatin1Char( ' ' )) const
QString arg(short a, int fieldWidth = 0, int base = 10, QChar fillChar = QLatin1Char( ' ' )) const
QString arg(ushort a, int fieldWidth = 0, int base = 10, QChar fillChar = QLatin1Char( ' ' )) const
QString arg(QChar a, int fieldWidth = 0, QChar fillChar = QLatin1Char( ' ' )) const
QString arg(char a, int fieldWidth = 0, QChar fillChar = QLatin1Char( ' ' )) const
QString arg(double a, int fieldWidth = 0, char format = 'g', int precision = -1, QChar fillChar = QLatin1Char( ' ' )) const
使用例項
typedef unsigned char uint8;
QString strShowHex,strShowBin;
uint8 val = 0xfc;
//16進位制
strShowHex = QString("0x%1").arg(int(val), 4, 16, QLatin1Char('0'));
//顯示結果為: 0x00fc
//2進位制
strShowBin = QString("%1 b").arg(int(val), 8, 2, QLatin1Char('0'));
//顯示結果為: 11111100 b