[형변환]char* to QBytearray & QBytearray to char*

• char* To QByteArray

QByteArray databuf;  databuf = QByteArray(reinterpret_cast<char*>(buf), 10);  databuf = QByteArray((char*)buf, 10);  databuf = QByteArray::fromRawData(buf, 10);

• QByteArray To char*

QByteArray data;  const std::size_t count = data.size();  unsigned char* hex =new unsigned char[count];  std::memcpy(hex,data.constData(),count);  char* pData = data.data();