Public Declare Function GetCurrentProcessId Lib “kernel32” () As 

Long 

  ’获得当前进程ID函数的声明 

  Public Declare Function RegisterServiceProcess Lib “kernel32” (ByVal ProcessId As 

Long, ByVal ServiceFlags As   Lo ng) As Long 

  ’在系统中注册当前进程ID函数的声明

form1.Visible=False

  form1.ShowInTaskBar=False

  在代码窗口添加如下代码：



Private Declare Function GetDriveType Lib “kernel32” Alias “GetDriveTypeA” (ByVal 

nDrive As String) As Long 

’获得当前驱动器类型函数的声明 

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 

’获得当前驱动器信息函数的声明 

Private Sub Form_Load() 

Dim drive_no As Long, drive_flag As Long 

Dim drive_chr As String, drive_disk As String 

Dim serial_no As Long, kkk As Long 

Dim stemp3 As String, dflag As Boolean 

Dim strlabel As String, strtype As String，strc As Long 

RegisterServiceProcess GetCurrentProcessId, 1 ’ 从系统中取消当前进程 

strlabel = String(255, Chr(0)) 

strtype = String(255, Chr(0)) 

stemp3 = “172498135” ’这是作者C盘的序列号（十进制）,读者可根据自己情况更改。 

dflag = False 

For drive_no = 0 To 25 

　drive_disk = Chr(drive_no + 67) 

　drive_chr = drive_disk & “:\” 

　drive_flag = GetDriveType(drive_chr) 

　If drive_flag = 3 Then 

 kkk = GetVolumeInformation(drive_chr, strlabel, Len(strlabel), serial_no, 0, 0, 

strtype, Len(strtype)) ’通过GetVolumeInformation获得磁盘序列号 

　Select Case drive_no 

 Case 0 

 strc = serial_no 

　End Select 

　If serial_no = stemp3 Then 

 dflag = True 

 Exit For 

　End If 

End If 

Next drive_no 

If drive_no = 26 And dflag = False Then ’非法用户 

　GoTo err: 

End If 

MsgBox (“HI，合法用户！”) 

Exit Sub 

err: 

　MsgBox (“错误!你的C：盘ID号是” & strc) 

End Sub 

Private Sub Form_Unload(Cancel As Integer) 

RegisterServiceProcess GetCurrentProcessId, 0 ’从系统中取消当前程序的进程 

End Sub