http://www.cnblogs.com/del/archive/2008/05/26/1207768.html (图形处理)
http://www.cnblogs.com/del/archive/2008/06/02/1212382.html (WinAPI: SetWindowExtEx、SetViewportExtEx)
http://www.cnblogs.com/del/archive/2008/06/03/1212534.html (WinAPI: ExtCreateRegion - 区域变换)