CString behavior in VC6.0 and VS2010

Hi All,

The concatenation (A =A+B) and operator overloading (A+=B) are behaving differently in VC6.0 and VS2010. I have created sample MFC project in VC6.0 and VS2010 to reproduce this issue.

Code:

CString strTemp = _T("");

       CString strVar1 = _T("");

       CString strVar2 = _T("");

       BYTE b[5] = { 0x12, 0x33, 0x00, 0x23, 0x22};

      for(int i=0;i<5;i++)

       {

              strTemp.Format("%c",b[i]);

              strVar1 += strTemp;

              strVar2 = strVar2 + strTemp;

       }

      int len1 = strVar1.GetLength();

      int len2 = strVar2.GetLength();

       AfxMessageBox(strVar1);

       AfxMessageBox(strVar2);

Observed Behavior:

Thanks,

Vijay