module1.bas

学校机房的上机管理系统.可以安排免费上机,可以收费上机.适合中小型机房.修改后也可以作为网吧管理软件.

Attribute VB_Name = "Module1"
Option Explicit

Public Declare Function CreateToolhelpSnapshot Lib "kernel32" Alias "CreateToolhelp32Snapshot" (ByVal lFlags As Long, ByVal lProcessID As Long) As Long
Public Declare Function ProcessFirst Lib "kernel32" Alias "Process32First" (ByVal hSnapShot As Long, uProcess As PROCESSENTRY32) As Long
Public Declare Function ProcessNext Lib "kernel32" Alias "Process32Next" (ByVal hSnapShot As Long, uProcess As PROCESSENTRY32) As Long
Public Const MAX_PATH As Integer = 260
Public Type PROCESSENTRY32
dwSize As Long
cntUsage As Long
th32ProcessID As Long
th32DefaultHeapID As Long
th32ModuleID As Long
cntThreads As Long
th32ParentProcessID As Long
pcPriClassBase As Long
dwFlags As Long
szExeFile As String * MAX_PATH
End Type
Public Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long


Public Const TH32CS_SNAPPROCESS = &H2
Public Const TH32CS_SNAPheaplist = &H1
Public Const TH32CS_SNAPthread = &H4
Public Const TH32CS_SNAPmodule = &H8
Public Const TH32CS_SNAPall = TH32CS_SNAPPROCESS + TH32CS_SNAPheaplist + TH32CS_SNAPthread + TH32CS_SNAPmodule


'##############################################
'以下强制关机功能


Private Const EWX_POWEROFF = 8                          '关闭系统并关闭电源
Private Const EWX_SHUTDOWN = 1                          '关闭系统使之能安全关闭电源

Private Const EWX_FORCE = 4                             '应用程序强制关闭

Private Const TOKEN_ADJUST_PRIVILEGES = &H20
Private Const TOKEN_QUERY = &H8
Private Const SE_PRIVILEGE_ENABLED = &H2
Private 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

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

'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 Function ShutDownPC()
    
    Call AdjustTokenPrivilegesForNT             '是NT以上系统就要先调用这个
    
    ExitWindowsEx EWX_POWEROFF Or EWX_SHUTDOWN Or EWX_FORCE, 0              '强制关机
End Function