C++字符串中查找子字符串并替换

BOOL FindAndReplaceStr(TCHAR * dest,TCHAR * findStr,TCHAR *replaceStr)
{
    TCHAR  *pfirst = NULL;
    int tmp_len=wcslen(dest);
    TCHAR pdest[MAX_PATH]={0};
    wcscat_s(pdest, MAX_PATH, dest);
    pfirst=wcswcs(dest,findStr);

 

    if(pfirst== NULL)

    {

        return FALSE;

    }
    wcsncpy_s(pdest,tmp_len,dest,(pfirst-dest));

    wcscat_s(pdest, MAX_PATH, replaceStr);
    pfirst=pfirst+wcslen(findStr);
    wcscat_s(pdest, MAX_PATH, pfirst);
    memset(dest,'\0',tmp_len);
    wcscpy_s(dest, MAX_PATH, pdest);

    return TRUE;
}