vb关闭计算机的模块

'关闭计算机的模块

Option Explicit

Public Declare Function SetSuspendState Lib "Powrprof" (ByVal Hibernate As Boolean, ByVal ForceCritical As Boolean, ByVal DisableWakeEvent As Boolean) As Boolean
Public Declare Function ExitWindowsEx Lib "user32" (ByVal uFlags As Long, ByVal dwReserved As Long) As Long

'ExitWindowsEx的参数uflags，有四个对应值，分别是：

Public Const EWX_LOGOFF = 0 '退出(注销)
Public Const EWX_SHUTDOWN = 1 '关机
Public Const EWX_POWEROFF = 8
Public Const EWX_REBOOT = 2 '重启动
Public Const EWX_FORCE = 4 '强制关机

Public Const TOKEN_ADJUST_PRIVILEGES = &H20
Public Const TOKEN_QUERY = &H8
Public Const SE_PRIVILEGE_ENABLED = &H2
Const ANYSIZE_ARRAY = 1

Type LUID
lowpart As Long
highpart As Long
End Type

Type LUID_AND_ATTRIBUTES
pLuid As LUID
Attributes As Long
End Type

Type TOKEN_PRIVILEGES
PrivilegeCount As Long
Privileges(ANYSIZE_ARRAY) As LUID_AND_ATTRIBUTES
End Type

Declare Function GetCurrentProcess Lib "kernel32" () As Long
Declare Function LookupPrivilegeValue Lib "advapi32.dll" Alias "LookupPrivilegeValueA" (ByVal lpSystemName As String, ByVal lpName As String, lpLuid As LUID) As Long
Declare Function AdjustTokenPrivileges Lib "advapi32.dll" (ByVal TokenHandle As Long, ByVal DisableAllPrivileges As Long, NewState As TOKEN_PRIVILEGES, ByVal BufferLength As Long, PreviousState As TOKEN_PRIVILEGES, ReturnLength As Long) As Long
Declare Function OpenProcessToken Lib "advapi32.dll" (ByVal ProcessHandle As Long, ByVal DesiredAccess As Long, TokenHandle As Long) As Long

'这个函数就是用于NT关机中使用的
Sub AdjustTokenPrivilegesForNT()

Dim hdlProcessHandle As Long
Dim hdlTokenHandle As Long
Dim tmpLuid As LUID
Dim tkp As TOKEN_PRIVILEGES
Dim tkpNewButIgnored As TOKEN_PRIVILEGES
Dim lBufferNeeded As Long

hdlProcessHandle = GetCurrentProcess()
OpenProcessToken hdlProcessHandle, (TOKEN_ADJUST_PRIVILEGES Or _
TOKEN_QUERY), hdlTokenHandle

LookupPrivilegeValue "", "SeShutdownPrivilege", tmpLuid
tkp.PrivilegeCount = 1
tkp.Privileges(0).pLuid = tmpLuid
tkp.Privileges(0).Attributes = SE_PRIVILEGE_ENABLED

AdjustTokenPrivileges hdlTokenHandle, False, tkp, _
Len(tkpNewButIgnored), tkpNewButIgnored, _
lBufferNeeded
End Sub

Public Sub SystemControl(Index As Integer)
IsReset = True
AdjustTokenPrivilegesForNT
Select Case Index
Case 0
ExitWindowsEx EWX_LOGOFF, 0
Case 1
ExitWindowsEx EWX_POWEROFF, 0
Case 2
ExitWindowsEx EWX_REBOOT, 0
Case 3
SetSuspendState False, True, False
Case 3
SetSuspendState True, True, True
End Select
End Sub