private sub form_load()
if isconnected = true then
msgbox (「您已經連通了inter***!」)
end if
if isconnected = false then
msgbox (「您還沒有連通 inter***!」)
end if
end sub
option explicit
/＊有關的api宣告和定義＊/
public declare function rasenumconnections lib 「rasapi32.dll」 alias 「rasenumconnectionsa」 (lprascon as any, lpcb as long, lpcconnections as long) as long
public declare function rasgetconnectstatus lib 「rasapi32.dll」 alias 「rasgetconnectstatusa」 (byval hrascon as long, lpstatus as any) as long
/＊常數和變數的設定＊/
public const ras95_maxentryname = 256
public const ras95_maxdevicetype = 16
public const ras95_maxdevicename = 32
public type rasconn95
dwsize as long
hrascon as long
szentryname(ras95_maxentryname) as byte
szdevicetype(ras95_maxdevicetype) as byte
szdevicename(ras95_maxdevicename) as byte
end type
public type rasconnstatus95
dwsize as long
rasconnstate as long
dwerror as long
szdevicetype(ras95_maxdevicetype) as byte
szdevicename(ras95_maxdevicename) as byte
end type
/＊函式isconnected返回連通的狀態，如果為true則表示已連通＊/
public function isconnected() as boolean
dim trascon(255) as rasconn95
dim lg as long
dim lpcon as long
dim retval as long
dim tstatus as rasconnstatus95
trascon(0).dwsize = 412
lg = 256 ＊ trascon(0).dwsize
retval = rasenumconnections(trascon(0), lg, lpcon)
if retval <> 0 then
msgbox 「錯誤」
exit function
end if
tstatus.dwsize = 160
retval = rasgetconnectstatus(trascon(0)
.hrascon,tstatus)
if tstatus.rasconnstate = ＆h2000 then
isconnected = true
else
isconnected = false
end if
end function
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