利用WIN95中的注册表建植,在注册表的HKEY-LOCAL-MACHINE\System\CurrentControlSet\Services\RemoteAcces\下,当计算机连上因特网时,Remote Connection的植为01 00 00 00,反之,为00 00 00 00,通过这一建植可判断是否连网。 1.建立新模块 - public const ERROR-SUCCESS= 0&
- public const APINULL= 0&
- public const HKEY-LOCAL-MACHINE= &H80000002
- public ReturnCode as long
复制代码
声明API函数 - RegCloseKey()
- RegQueryValueEx()
复制代码
自定义函数 - public function ActiveConnection() as boolean
- dim hKey as long
- dim lpSubKey as string
- dim lpReserved as long
- dim lpType as long
- dim lpData as long
- dim lpcbData as long
- ActiveConnection=False
- lpSubKey="System\CurrentControlSet\Services\RemoteAccess"
- ReturnCode=RegOpenKey(HKEY-LOCAL-MACHINE,lpSubKey,phkResult)
- if ReturnCode=ERROR-SUCCESS then
- hKey=phkResult
- lpValueName="Remote Connection"
- lpReserved=APINULL
- lpType=APINULL
- lpData=APINULL
- lpcbData=APINULL
- ReturnCode=RegQueryValueEx(hKey,lpValueName,lpReserved,lpType,ByVal lpData,lpcba
- ta)
- lpcbData=Len(lpData)
- ReturnCode=RegQueryValueEx(hKey,lpValueName,lpReserved,lpType,ByVal lpData,lpcba
- ta)
- if ReturnCode=ERROR-SUCCESS then
- if lpData=0 then
- ActiveConnection=false
- else
- ActiveConnection=True
- end if
- end if
- RegCloseKey(hKey)
- end if
- end funtion
复制代码
2.新建窗体 - priate sub Command1-click()
- if ActiveConnection=True then
- msgbox "OK!"
- else
- msgbox "ERROR!"
- end sub
复制代码
|