Question

请教如何把1个QString数字字符串转换成16进制的QString数字字符串

Answer 1

char* m_pData;
memcpy(m_pData, pData, nLength);
m_nLength = nLength;

//char存储到QString里
for (int i = 0; i < m_nLength; i++)
{
bool ok;
QString m_tmp = QString::number(*m_pData,16);

//接收字符为0x00，变字符串为00
if (m_tmp.toInt(&ok,10) == 0)
{
m_tmp = ("00");
}
//接收字符为0x04,0x07等，补足0
if ((m_tmp.toInt(&ok,10) < 10) && (m_tmp.toInt(&ok,10) > 0))
{
m_tmp = m_tmp.insert(0, "0");
}

m_exchange.append(m_tmp);
m_exchange.append(" ");
m_pData = m_pData + 1;
m_tmp.clear();
}

Answer 2

QString str = "123";
QByteArray ba;
qDebug()<<ba.appand(str).toHex()<<endl;

Answer 3

sprintf(m_tmp, "%2X",(unsigned char)*m_pData)