Qt___QList____使用

#include "ctestqlist.h"

#include <QDebug>

CTestQList::CTestQList(QWidget *parent)

    : QWidget(parent)

{

    int i;

    unsigned char  buf[20];

    unsigned char buf1[20];

    int len;

    for(i=0;i<20;i++)

   {

        buf[i]=i+5;

        buf1[i]=100;

    }

    addToList(buf,20);

//----------------------------

    for(i=0;i<20;i++)

   {

        buf[i]=i+80;

        buf1[i]=100;

    }

    addToList(buf,20);

    //----------------------------

        for(i=0;i<20;i++)

       {

            buf[i]=i+100;

            buf1[i]=100;

        }

        addToList(buf,20);

        //----------------------------

            for(i=0;i<20;i++)

           {

                buf[i]=i+200;

                buf1[i]=100;

            }

            addToList(buf,20);

            //----------------------------

                for(i=0;i<20;i++)

               {

                    buf[i]=i+300;

                    buf1[i]=100;

                }

                addToList(buf,20);

                //----------------------------

                    for(i=0;i<20;i++)

                   {

                        buf[i]=i+400;

                        buf1[i]=100;

                    }

                    addToList(buf,20);

    qDebug()<<"get from buffer.....";

    len=getFromList(buf1);

    for(i=0;i<len;i++)

        qDebug()<<buf1[i];

    len=getFromList(buf1);

    for(i=0;i<len;i++)

        qDebug()<<buf1[i];

 qDebug()<<"get from buffer.....";

 len=getFromList(buf1);

 for(i=0;i<len;i++)

     qDebug()<<buf1[i];

qDebug()<<"get from buffer.....";

len=getFromList(buf1);

for(i=0;i<len;i++)

    qDebug()<<buf1[i];

qDebug()<<"get from buffer.....";

len=getFromList(buf1);

for(i=0;i<len;i++)

    qDebug()<<buf1[i];

qDebug()<<"get from buffer.....";

len=getFromList(buf1);

for(i=0;i<len;i++)

    qDebug()<<buf1[i];

qDebug()<<"get from buffer.....";

len=getFromList(buf1);

for(i=0;i<len;i++)

    qDebug()<<buf1[i];

qDebug()<<"get from buffer.....";

len=getFromList(buf1);

for(i=0;i<len;i++)

    qDebug()<<buf1[i];

qDebug()<<"get from buffer.....";

}

CTestQList::~CTestQList()

{

}

void CTestQList::addToList(unsigned char *buf,int len)

{

   rcvBuf_t rcvBuf;

   if(buf==NULL)

   {

      return ;

   }

   rcvBuf.buf=(unsigned char *)malloc(len);

   if(rcvBuf.buf!=NULL)

   {

       memcpy(rcvBuf.buf,buf,len);

       rcvBuf.len=len;

   }

   m_list.append(rcvBuf);

}

int  CTestQList::getFromList(unsigned char *buf)

{

    int length;

    if(buf==NULL)

    {

      return -1;

    }

    QList<rcvBuf_t>::iterator Iter;

    for(Iter=m_list.begin();Iter!=m_list.end();Iter++)

     {

                    if(Iter->buf!=NULL)

                    {

                        memcpy(buf,Iter->buf,Iter->len);

                        free(Iter->buf);

                        length=Iter->len;

                        m_list.erase(Iter);

                        return length;

                    }

               }

      return 0;

}

void CTestQList::clearList()

{

    QList<rcvBuf_t>::iterator Iter;

                for(Iter=m_list.begin();Iter!=m_list.end();Iter++)

               {

                      m_list.erase(Iter);

               }

}