시계 밀리세컨드

CString str;
SYSTEMTIME cur_time;
GetLocalTime(&cur_time);
str.Format(TEXT("%4d년%02d월%02d일 %02d:%02d:%02d:%03d"), cur_time.wYear, cur_time.wMonth, 
    cur_time.wDay, cur_time.wHour, cur_time.wMinute, cur_time.wSecond, cur_time.wMilliseconds);
AfxMessageBox(str);