Qt：udp的初始化及数据接收

//revthread.cpp  该文件的udp设置 及接收函数
void MainWindow::UdpInit(void)
{       
      glv_UDPRevSocket =new QUdpSocket(this);       

     connect(glv_UDPRevSocket,SIGNAL(readyRead()),this,SLOT(datareceive()));       
       bool result= glv_UDPRevSocket->bind(port,QUdpSocket::ShareAddress);                                     
         if(!result)                
    {                        
      qDebug()<<"udp init chucuo";                
  }
}
//报文接收缓冲区 
char glv_recebuffer[200];
void MainWindow::datareceive()
{        
     if(recflag!=1)                
            recflag=1;       
      while (glv_UDPRevSocket->hasPendingDatagrams())        
         {                
           qDebug()<pendingDatagramSize();                
            glv_UDPRevSocket->readDatagram(glv_recebuffer,\                        
            glv_UDPRevSocket->pendingDatagramSize());        
  }
}