使用QT出大问题了！！！

while(1)

    {

        ERROR_NO perr = ERR_UNKNOWN;

        uint32 msgItem = portMessageQPend(gLocalUpdateUpdateStatusMsgQ, 0, &perr);

        if (ERR_SUCCESS == perr)

        {

            mutex.lock();

            LOCAL_UPDATE_MSG_ITEM item = *((LOCAL_UPDATE_MSG_ITEM*)&msgItem);

            MEM_HANDLE hData = item.msg_data;

            int dataLen = mem_len(hData);

            unsigned char *buf = new unsigned char[dataLen];

            mem_read(buf, dataLen, hData, 0, dataLen);

            mem_free(hData);

            

            if (item.msg_type == UPDATE_DATA_INFO)

            {

                char updateBuf[256] = {0};

                char temp_buf[10];

                for(int i = 0; i < dataLen; i++)

                {

                    sprintf_s(temp_buf,10,"%02x,",buf[i]);

                    strcat(updateBuf, temp_buf);

                }



                strList.append(QString::fromLocal8Bit(updateBuf));

            }

            else

            {

                strList.append(QString::fromLocal8Bit((const char*)buf));

            }

            

            int count = strList.count();

            if(count > 20)

                strList.erase(strList.begin());

             strModel.setStringList(strList);

            

             delete[] buf;

            mutex.unlock();

        }

         

    }