取得磁碟机之Volumn及Serial Numbe

适用ACCESS97、2000

这两项磁碟机资料须使用API函数方可取得，代码如下：

Private Declare Function GetVolumeInformation Lib "kernel32" Alias "GetVolumeInformationA" (ByVal lpRootPathName As String, ByVal lpVolumeNameBuffer As String, ByVal nVolumeNameSize As Long, lpVolumeSerialNumber As Long, lpMaximumComponentLength As Long, lpFileSystemFlags As Long, ByVal lpFileSystemNameBuffer As String, ByVal nFileSystemNameSize As Long) As Long

Function GetVolumn(X As String) As String

If Len(X) < 3 Then

X = Left(X, 1) & ":\"

Else

X = Left(X, 3)

End If

Dim nRet As Long, VolName As String, VolSN As Long, MaxCompLen As Long

Dim VolFlags As Long, VolFileSys As String

VolName = Space$(256)

VolFileSys = Space$(256)

nRet = GetVolumeInformation(X, VolName, Len(VolName), _

VolSN, MaxCompLen, VolFlags, _

VolFileSys, Len(VolFileSys))

If nRet = 1 Then

GetVolumn = VolName

Else

GetVolumn = ""

End If

End Function

Function GetNumber(X As String) As String

If Len(X) < 3 Then

X = Left(X, 1) & ":\"

Else

X = Left(X, 3)

End If

Dim nRet As Long, VolName As String, VolSN As Long, MaxCompLen As Long

Dim VolFlags As Long, VolFileSys As String

VolName = Space$(256)

VolFileSys = Space$(256)

nRet = GetVolumeInformation(X, VolName, Len(VolName), _

VolSN, MaxCompLen, VolFlags, _

VolFileSys, Len(VolFileSys))

If nRet = 1 Then

GetNumber = VolSN

Else

GetVolumn = ""

End If

End Function

前面的Declare陈述式宣告一个API函数（GetVolumeInformation），可取得磁碟机的两项资料。