C++爱好者 - 网友留言

我想问一下OnCommNotify 这个事件是否有自动刷新的功能?我在这个时间里的程序如下:

unsigned char Buf1[24],Buf2[24],Buf3[24];
int mBuf1=0,mBuf2=0,mBuf3=0;
unsigned long int data1[3],data2[3],data3[3];

unsigned char Buffer[4000]; //接收缓存
   int n = YbCommDevice1->Read(Buffer,4000); //收到数据的字节数
  if(n>0)
  {
   for(int i=0; i   {
     if(i%4==0)
      switch(Buffer[i])
      {
       case 1: Buf1[mBuf1*4+0]=Buffer[i];
               Buf1[mBuf1*4+1]=Buffer[i+1];
               Buf1[mBuf1*4+2]=Buffer[i+2];
               Buf1[mBuf1*4+3]=Buffer[i+3];
               mBuf1=mBuf1+1;
               break;
       case 2: Buf2[mBuf2*4+0]=Buffer[i];
               Buf2[mBuf2*4+1]=Buffer[i+1];
               Buf2[mBuf2*4+2]=Buffer[i+2];
               Buf2[mBuf2*4+3]=Buffer[i+3];
               mBuf2=mBuf2+1;
               break;
       case 3: Buf3[mBuf3*4+0]=Buffer[i];
               Buf3[mBuf3*4+1]=Buffer[i+1];
               Buf3[mBuf3*4+2]=Buffer[i+2];
               Buf3[mBuf3*4+3]=Buffer[i+3];
               mBuf3=mBuf3+1;
               break;
      }
    data1[0]=Buf1[1]*256^2+Buf1[2]*256+Buf1[3];//
    data1[1]=Buf2[1]*256^2+Buf2[2]*256+Buf2[3];
    data1[2]=Buf3[1]*256^2+Buf3[2]*256+Buf3[3];
   }
 }
怎么接收到的始终是第一组数据?它不是应该自动覆盖前面发的?我现在急用程序,日思夜想,还没人指导,只好求你帮忙了.谢谢!



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