根据系统时间的变化来进行加密

				; CLW file contains information for the MFC ClassWizard
				
				[General Info]
				Version=1
				ClassCount=1
				Class1=CControlApp
				LastClass=CControlApp
				NewFileInclude2=#include "Control.h"
				ResourceCount=0
				NewFileInclude1=#include "stdafx.h"
				
				[CLS:CControlApp]
				Type=0
				HeaderFile=Control.h
				ImplementationFile=Control.cpp
				Filter=N
				BaseClass=CWinApp
				VirtualFilter=AC