qt的结构体中FUNC_POOL封装memcpy()

最新推荐文章于 2025-09-11 22:56:57 发布

原创最新推荐文章于 2025-09-11 22:56:57 发布 · 255 阅读

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#qt

封装memcpy()

#define FUNC_POOL \
bool payload_cur_info(Net_Carrier *NetPak, uint32_t size = NET_CARRIER_PAYLOAD_MAX_SIZE)\
{\
    uint32_t self_size=sizeof (*this);\
    NetPak->_payload_size = sizeof(*this);\
    if(self_size<=size)\
    {\
        memcpy_s(NetPak->_payload,size,this,self_size);\
        return true;\
    }else{\
        return false;\
    }\
}\
uint32_t get_payload_size()\
{\
    return sizeof(*this);\
}

把数据存储为字符，存进字符流

//设置相机投影数据
struct topic_set_cam_projection_data
{
    uint16_t _node_id;
    TYPE_cam_projection_data CamProjectionData;//相机投影数据
 

    std::string ToString()
    {
    std::stringstream ss;
    ss << "_node_id:" << (int)_node_id << " ,";
    ss << CamProjectionData.ToString();
    return ss.str();
    }
   FUNC_POOL
};

       Net_Carrier NetPack;
        NetPack._msg_priorities = EMSG_PRIORITIY::GameNormal;
        NetPack._source_node = E_NNODE_MSG_CONVER;
        NetPack._target_node = E_NNODE_VISUAL;
        NetPack._time_stamp = time(0);
        NetPack._topic_id = E_TPC_SET_CAM_PROJECTION_DATA;
      
        topic_set_cam_projection_data sysSetting;
        sysSetting._node_id = id;
        sysSetting.CamProjectionData._enable = enable;
        sysSetting.CamProjectionData._top_clipping_angle = top;
        sysSetting.CamProjectionData._bottom_clipping_angle = bottom;
        sysSetting.CamProjectionData._left_clipping_angle = left;
        sysSetting.CamProjectionData._right_clipping_angle = right;
       
       	//把这个结构体数据拷贝到另一个结构体
        sysSetting.payload_cur_info(&NetPack);
       
        QByteArray SendData;
        int SendSize = 21+NetPack._payload_size;
        SendData.resize(SendSize);
        memcpy(SendData.data(),&NetPack,SendSize);
        SendUdpData(SendData,QHostAddress(ip),port,msgType);