http://blogs.msdn.com/b/msdnmagazine/archive/2007/12/19/6799999.aspxThe Visual C++ team developed the Active Template Library (ATL) to allow COM clients and servers to be easily created while producing the smallest and fastest code possible. Windows Template Library (WTL) extends ATL with a very rich set of class templatesen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)