请教这代码要怎么解？
LOCAL oWMI AS OBJECT,oLocal AS OBJECT,oHARDWARE AS OBJECT,object1 AS OBJECT,lcCPUID,LcMAC,lcHDID,lcSerial oWMI=CREATEOBJECT("WbemScripting.SWbemLocator")
oLocal=oWMI.ConnectServer(".", "root\cimv2")
oHARDWARE=oLocal.ExecQuery("SELECT * FROM Win32_NetworkAdapterConfiguration Where IPEnabled=1")
FOR EACH object1 IN oHARDWARE
LcMAC=object1.Properties_('MACAddress').VALUE
LcIP=object1.Properties_('IPAddress').VALUE
ox=CREATEOBJECT("MSwinsock.Winsock")
EXIT
ENDFOR
if thisform.label4.visible=.t.
thisform.label4.visible=.f.
thisform.label1.visible=.t.
thisform.text4.visible=.t.
thisform.text4.setfocus()
else
if empty(allt(thisform.text4.value))
messagebox("请输入您购买本软件时的注册码。",64,KZXP)
thisform.text4.setfocus()
else
nx=0
reg=0
do while nx<=len(CName+LcMAC)
reg=reg+asc(subs(CName+LcMAC,nx+1,2))
nx=nx+2
enddo
reg=reg&psx
reg_enx=""
nx=1
do_n=len(allt(str(reg)))
do while nx<=do_n
reg_en=val(subs(allt(str(reg)),nx,1))*val(subs(allt(str(reg)),do_n-nx,1))
if reg_en<65
do while .t.
reg_en=reg_en+26+nx
if reg_en>90
reg_en=reg_en-26
exit
endif
enddo
endif
reg_enx=reg_enx+subs(allt(str(reg)),nx,1)+IIF(reg_en>90,"",iif(mod(reg_en+nx,2)=0,"",lower(chr(reg_en))))
nx=nx+1
enddo
reg_zsb=reg_enx
nx=0
reg=0
do while nx<=len(CName+"tryout"+LcMAC)
reg=reg+asc(subs(CName+"tryout"+LcMAC,nx+1,2))
nx=nx+2
enddo
reg=reg&psx
reg_enx=""
nx=1
do_n=len(allt(str(reg)))
do while nx<=do_n
reg_en=val(subs(allt(str(reg)),nx,1))*val(subs(allt(str(reg)),do_n-nx,1))
if reg_en<65
do while .t.
reg_en=reg_en+26+nx
if reg_en>90
reg_en=reg_en-26
exit
endif
enddo
endif
reg_enx=reg_enx+subs(allt(str(reg)),nx,1)+IIF(reg_en>90,"",iif(mod(reg_en+nx,2)=0,"",lower(chr(reg_en))))
nx=nx+1
enddo
reg_srb=reg_enx
if subs(allt(thisform.text4.value),3)=reg_zsb or subs(allt(thisform.text4.value),3)=reg_srb
if subs(allt(thisform.text4.value),3)=reg_zsb
messagebox("注册成功！欢迎使用本软件！",64,KZXP)
THISFORM.LABEL4.CAPTION="软件授权给："+CName
thisform.image2.enabled=.t.
reg=reg_zsb
*!* sele "set"
*!* loca all for setname="useresidual"
*!* repl valued with ""
else
srb_yq=allt(subs(allt(str((len(CName)*len(LcMAC)+(len(CName)+len(LcMAC))*9))),1,2))
srb_yq=iif(len(srb_yq)=1,"0"+srb_yq,srb_yq)
sele "set"
loca all for setname="useresidual"
if subs(thisform.text4.value,1,2)=srb_yq
sr_date=date()+30
yearx=allt(str((len(CName)+len(LcMAC))*1999-year(sr_date)))
F1=SUBS(allt(str(asc("/")-47*len(CName))),1,3)
monthx=allt(str(month(sr_date)*(len(CName)+len(LcMAC))*1999))
F2=SUBS(allt(str(asc("/")-47*len(LcMAC))),1,3)
dayx=allt(str(day(sr_date)*(len(CName)+len(LcMAC))))
sr_date=yearx+F1+monthx+F2+dayx
repl valued with sr_date
sr_date=dtoc(date()+30)
else
sr_date_jm=allt(valued)
F1_at=at("-",sr_date_jm)
F2_rat=rat("-",sr_date_jm)
yearx=subs(sr_date_jm,1,F1_at-1)
monthx=subs(sr_date_jm,F1_at+3,F2_rat-F1_at-3)
dayx=subs(sr_date_jm,F2_rat+3)
yearx=allt(str(((len(CName)+len(LcMAC))*1999)-val(yearx)))
monthx=allt(str(val(monthx)/((len(CName)+len(LcMAC))*1999)))
dayx=allt(str(val(dayx)/(len(CName)+len(LcMAC))))
sr_date=yearx+"/"+monthx+"/"+dayx
endif
if empty(ctod(sr_date)) or ctod(sr_date)-date()>30 or ctod(sr_date)<date()
messagebox("无效的注册日期！请联系软件供应商。",64,KZXP)
loadgzgl=.f.
THISFORM.CANCELBS=.T.
CLOSE ALL
release thisform
CANCEL
else
messagebox("您所输入的是试用注册码，试用期到："+sr_date+" 止。"+chr(13)+"如果需要购买正式版本，请联系软件供应商。",64,KZXP)
THISFORM.LABEL4.CAPTION="试用版授权日期到 "+sr_date+" 止。"
thisform.image2.enabled=.t.
endif
reg=reg_srb
endif
thisform.label4.visible=.t.
loca all for setname="ID"
mn=1
reg_ps=""
reg_len=len(reg)
do while mn<=reg_len
do case
case type(subs(reg,mn,1))="U"
reg_n=str(asc(subs(reg,mn,1))+len(CName)*(reg_len-mn))+"-"
case type(subs(reg,mn,1))="N"
reg_n=str(val(subs(reg,mn,1))+len(CName)*(reg_len-mn))+"_"
endcase
reg_ps=reg_ps+allt(reg_n)
mn=mn+1
enddo
repl valued with reg_ps+allt(str(reg_len))
thisform.label1.visible=.f.
thisform.text4.visible=.f.
thisform.text1.enabled=.t.
thisform.text2.enabled=.t.
thisform.text3.enabled=.t.
thisform.text1.setfocus()
else
messagebox("注册码无效，请与软件供应商联系！",64,KZXP)
loadgzgl=.f.
CLOSE ALL
release thisform
CANCEL
endif
endif
endif
