Qt字符串QStringarg（）⽤法总结1、QString::arg()//⽤字符串变量参数依次替代字符串中最⼩数值
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1. QString i = "iTest"; // current file's number
2. QString total = "totalTest"; // number of files to process
3. QString fileName = "fileNameTest"; // current file's name
4.
5. QString status = QString("Processing file %1 of %2: %3")
6. .arg(i).arg(total).arg(fileName);
7. > qDebug() << status ;</span>
结果就是："Processing file iTest of totalTest: fileNameTest"
爱和自由育儿网>诸葛亮神机妙算First, arg(i) replaces %1. Then arg(total) replaces %2. Finally, arg(fileName) replaces %3.
生物书七年级下册2、QString::arg ( int a, int fieldWidth = 0, int ba = 10, const QChar & fillChar = QLatin1Char( ' ' ) ) const 16进制输出：fieldWidth表⽰字符宽度，ba表⽰进制，职业性格类型
工作个人先进事迹500字Cpp代码
1. QString str;
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2. str = QString("Decimal 63 is %1 in hexadecimal")
3. .arg(63, 0, 16);
4. // str == "Decimal 63 is 3f in hexadecimal"
5.
6. QLocale::tDefault(QLocale(QLocale::English, QLocale::UnitedStates));
7. str = QString("%1 %L2 %L3")
8. .arg(12345)
9. .arg(12345)
10. .arg(12345, 0, 16);
黄豆汤11. // str == "12345 12,345 3039"
12. //16进制显⽰，就忽略%L3的L
