【发布时间】:2019-01-20 23:11:52
【问题描述】:
我有以下代码:
QByteArray ba; // Declare Byte array
ba.clear(); // Clear it
ba.append(80, 0x00); // Append 80 bytes of 0x00
quint32 Count = 2; // The number we want to append to the byte array
QBuffer tempBuffer(&ba); // We use temporary buffer to conveniently put integers and floats into byte-array
tempBuffer.open(QIODevice::WriteOnly);
Count = qToLittleEndian(Count); // Make sure our number is little Endian
tempBuffer.write((char*)&Count, sizeof(quint32)); // Write the number to byte array
当我打印到控制台我的字节数组的内容时:
qDebug() << "ba: " << ba.toHex();
控制台打印:
ba: "0200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"
从上面可以看出,quint32 类型的2 正确地由0x02000000 的小端十六进制值表示,但是,它是在开始处添加的字节数组的而不是结尾。如何追加我的值到字节数组的end?
【问题讨论】:
标签: qt qbytearray qbuffer