Option Compare Database
Option Explicit
Declare Function GetVolumeInformationA Lib "kernel32" _
(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 SerienNummer() As String
Dim SerialNumber As Long
GetVolumeInformationA "C:\", vbNullString, 0, SerialNumber, _
0, 0, vbNullString, 0
'MsgBox SerialNumber
SerienNummer = SerialNumber
Debug.Print SerienNummer ' es kommt: 1892914751
End Function