怎么用 VB6.0 代码关闭 Windows XP 系统？
大家好！

怎么用 VB6.0 代码关闭 Windows XP 系统？
谢谢!

[解决办法]
在公共标准模块中声明WIN API：
Public Declare Function ExitWindowsEx Lib "user32 " (ByVal uFlags As Long, ByVal dwReserved As Long) As Long

在按钮事件中用如下代码可关机：
Private Sub Command1_Click()
ExitWindowsEx 1, 0
End Sub

在按钮事件中用如下代码可重启：
Private Sub Command1_Click()
ExitWindowsEx 2, 0
End Sub

[解决办法]
<98 下的代码>

Private Declare Function ExitWindows Lib "user32 " (ByVal dwReserved As Long, ByVal uReturnCode As Long) As Long

Private Const EWX_LOGOFF = 0
Private Const EWX_SHUTDOWN = 1
Private Const EWX_REBOOT = 2
Private Const EWX_FORCE = 4

Private Sub execute(op as string)
Select Case op
Case "关机 "
ExitWindows EWX_SHUTDOWN, 0
Case "重启 "
ExitWindows EWX_REBOOT, 0
Case "注销 "
ExitWindows EWX_LOGOFF, 0
End Select
End Sub

==============================================================================

<2000 和 xp 下的代码>

Private Declare Function ExitWindowsEx Lib "user32 " (ByVal uFlags As Long, ByVal dwReserved As Long) As Long
Private Declare Function GetCurrentProcess Lib "kernel32 " () As Long
Private Declare Function LookupPrivilegeValue Lib "advapi32.dll " Alias "LookupPrivilegeValueA " (ByVal lpSystemName As String, ByVal lpName As String, lpLuid As LUID) As Long
Private 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
Private Declare Function OpenProcessToken Lib "advapi32.dll " (ByVal ProcessHandle As Long, ByVal DesiredAccess As Long, TokenHandle As Long) As Long

Private Const ANYSIZE_ARRAY = 1 '--------AT
Private Const TOKEN_ADJUST_PRIVILEGES = &H20 '--------AT
Private Const TOKEN_QUERY = &H8 '--------AT
Private Const SE_PRIVILEGE_ENABLED = &H2 '--------AT

Sub AdjustToken()
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 ' One privilege to set
tkp.Privileges(0).pLuid = tmpLuid
tkp.Privileges(0).Attributes = SE_PRIVILEGE_ENABLED
'Get the LUID for shutdown privilege.

AdjustTokenPrivileges hdlTokenHandle, False, tkp, Len(tkpNewButIgnored), tkpNewButIgnored, lBufferNeeded
'Enable the shutdown privilege in the access token of this process.
End Sub

Private Sub execute(op as string) '--------AT
Call AdjustToken

Select Case op
Case "注销 "
ExitWindowsEx EWX_LOGOFF, 0
Case "关闭 "
ExitWindowsEx EWX_SHUTDOWN, 0
Case "重启 "
ExitWindowsEx EWX_REBOOT, 0
Case "强制关闭 "
ExitWindowsEx EWX_FORCE, 0
End Select

End Sub

[解决办法]
Option Explicit

Public Declare Function ExitWindowsEx Lib "user32 " (ByVal uFlags As Long, _
ByVal dwReserved As Long) As Long

Enum HowExitConst
EWX_FORCE = 4 ' 强制关机
EWX_LOGOFF = 0 ' 登出
EWX_REBOOT = 2 ' 重开机
EWX_SHUTDOWN = 1 ' 关机
EWX_POWEROFF = 8
End Enum

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

Private Type LUID
lowpart As Long
highpart As Long
End Type

Private Type LUID_AND_ATTRIBUTES
pLuid As LUID
Attributes As Long
End Type

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

Private Declare Function GetCurrentProcess Lib "kernel32 " () As Long
Private Declare Function LookupPrivilegeValue Lib "advapi32.dll " Alias _
"LookupPrivilegeValueA " (ByVal lpSystemName As String, _
ByVal lpName As String, lpLuid As LUID) As Long
Private 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
Private Declare Function OpenProcessToken Lib "advapi32.dll " _
(ByVal ProcessHandle As Long, ByVal DesiredAccess As Long, _
TokenHandle As Long) As Long

Public Sub AdjustToken()
'因为 98以上的机器存在一个安全机制的问题 这个就是处理安全机制问题的代码


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


Private Sub Label1_Click(Index As Integer)
'该代码可以关闭所以的windows系统
Select Case Index
Case 0
AdjustToken
Call ExitWindowsEx(EWX_LOGOFF, 0) '注销
End
Case 1
AdjustToken
Call ExitWindowsEx(EWX_POWEROFF, 0) '对付98不能关机
Call ExitWindowsEx(EWX_SHUTDOWN, 0) '关机
End
Case 2
AdjustToken
Call ExitWindowsEx(EWX_REBOOT, 0) '重启
End
Case 3
Unload Me
'取消
End Select

End Sub