Protection application

Private Declare Function GetVolumeInformation Lib _
"Kernel32.dll" Alias "GetVolumeInformationA" (ByVal _
lpRootPathName As String, ByVal lpVolumeNameBuffer As _
String, ByVal nVolumeNameSize As Integer, _
lpVolumeSerialNumber As Long, _
lpMaximumComponentLength _
As Long, lpFileSystemFlags As Long, ByVal _
lpFileSystemNameBuffer As String, ByVal _
nFileSystemNameSize As Long) As Long

Function NumSerieDD(LettreDD As String) As Long
Dim SerialNum As Long
Dim R As Long
Dim Temp1 As String
Dim Temp2 As String
LettreDD = LettreDD & ":\"
Temp1 = String$(255, Chr$(0))
Temp2 = String$(255, Chr$(0))
R = GetVolumeInformation(LettreDD, Temp1, _
Len(Temp1), SerialNum, 0, 0, Temp2, Len(Temp2))
NumSerieDD = SerialNum
End Function