vb 关机代码

vb 关机代码 用VB语言如何设置一个简单的关机程序(2006-10-29 19:25:10) 如果系统是XP的话，你可以用这个语句: shell "shutdown -r -t " %26 text1.text '%26 "-c " %26 text2.text text1.text就是你要设置的关机时间，单位为秒，text2.text是你的关机提示(不想关机的 话，就运行"shutdown -a" 就行了( 如果你倒计时间是固定的话(比如30秒)，可以用以下的: shell "shutdown -r -t 30" 如果说别的系统的话，这里有一个模块，你自己调用吧 Private Type OSVERSIONINFO dwOSVersionInfoSize As Long dwMajorVersion As Long dwMinorVersion As Long dwBuildNumber As Long dwPlatformId As Long szCSDVersion As String * 128 ' Maintenance string for PSS usage End Type Private Declare Function GetVersionEx Lib "kernel32" Alias "GetVersionExA" (lpVersionInformation As OSVERSIONINFO) As Long Private Const VER_PLATFORM_WIN32_NT = 2 Private Const VER_PLATFORM_WIN32_WINDOWS = 1 Private Const VER_PLATFORM_WIN32s = 0 'API错误: Private Const FORMAT_MESSAGE_ALLOCATE_BUFFER = %26H100 Private Const FORMAT_MESSAGE_ARGUMENT_ARRAY = %26H2000 Private Const FORMAT_MESSAGE_FROM_HMODULE = %26H800 Private Const FORMAT_MESSAGE_FROM_STRING = %26H400 Private Const FORMAT_MESSAGE_FROM_SYSTEM = %26H1000 Private Const FORMAT_MESSAGE_IGNORE_INSERTS = %26H200 Private Const FORMAT_MESSAGE_MAX_WIDTH_MASK = %26HFF Private Declare Function FormatMessage Lib "kernel32" Alias "FormatMessageA" (ByVal dwFlags As Long, lpSource As Any, ByVal dwMessageId As Long, ByVal dwLanguageId As Long, ByVal lpBuffer As String, ByVal nSize As Long, Arguments As Long) As Long ' ===================================================================== ' NT Only Private Type LARGE_INTEGER LowPart As Long HighPart As Long End Type 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(0 To 0) As LUID_AND_ATTRIBUTES End Type Private Declare Function GetCurrentProcess Lib "kernel32" () As Long Private Declare Function OpenProcessToken Lib "advapi32.dll" (ByVal ProcessHandle As Long, ByVal DesiredAccess As Long, TokenHandle As Long) As Long Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long Private Declare Function GetTokenInformation Lib "advapi32.dll" (ByVal TokenHandle As Long, TokenInformationClass As Integer, TokenInformation As Any, ByVal TokenInformationLength As Long, ReturnLength As Long) 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 LookupPrivilegeValue Lib "advapi32.dll" Alias "LookupPrivilegeValueA" (ByVal lpSystemName As String, ByVal lpName As String, lpLuid As LUID) As Long Private Const SE_SHUTDOWN_NAME = "SeShutdownPrivilege" Private Const SE_PRIVILEGE_ENABLED = %26H2 Private Const READ_CONTROL = %26H20000 Private Const STANDARD_RIGHTS_ALL = %26H1F0000 Private Const STANDARD_RIGHTS_EXECUTE = (READ_CONTROL) Private Const STANDARD_RIGHTS_READ = (READ_CONTROL) Private Const STANDARD_RIGHTS_REQUIRED = %26HF0000 Private Const STANDARD_RIGHTS_WRITE = (READ_CONTROL) Private Const TOKEN_ASSIGN_PRIMARY = %26H1 Private Const TOKEN_DUPLICATE = (%26H2) Private Const TOKEN_IMPERSONATE = (%26H4) Private Const TOKEN_QUERY = (%26H8) Private Const TOKEN_QUERY_SOURCE = (%26H10) Private Const TOKEN_ADJUST_PRIVILEGES = (%26H20) Private Const TOKEN_ADJUST_GROUPS = (%26H40) Private Const TOKEN_ADJUST_DEFAULT = (%26H80) Private Const TOKEN_ALL_ACCESS = (STANDARD_RIGHTS_REQUIRED Or _ TOKEN_ASSIGN_PRIMARY Or _ TOKEN_DUPLICATE Or _ TOKEN_IMPERSONATE Or _ TOKEN_QUERY Or _ TOKEN_QUERY_SOURCE Or _ TOKEN_ADJUST_PRIVILEGES Or _ TOKEN_ADJUST_GROUPS Or _ TOKEN_ADJUST_DEFAULT) Private Const TOKEN_READ = (STANDARD_RIGHTS_READ Or TOKEN_QUERY) Private Const TOKEN_WRITE = (STANDARD_RIGHTS_WRITE Or _ TOKEN_ADJUST_PRIVILEGES Or _ TOKEN_ADJUST_GROUPS Or _ TOKEN_ADJUST_DEFAULT) Private Const TOKEN_EXECUTE = (STANDARD_RIGHTS_EXECUTE) Private Const TokenDefaultDacl = 6 Private Const TokenGroups = 2 Private Const TokenImpersonationLevel = 9 Private Const TokenOwner = 4 Private Const TokenPrimaryGroup = 5 Private Const TokenPrivileges = 3 Private Const TokenSource = 7 Private Const TokenStatistics = 10 Private Const TokenType = 8 Private Const TokenUser = 1 Private Declare Function InitiateSystemShutdown Lib "advapi32.dll" Alias "InitiateSystemShutdownA" (ByVal lpMachineName As String, ByVal lpMessage As String, ByVal dwTimeout As Long, ByVal bForceAppsClosed As Long, ByVal bRebootAfterShutdown As Long) As Long Private Declare Function AbortSystemShutdown Lib "advapi32.dll" Alias "AbortSystemShutdownA" (ByVal lpMachineName As String) As Long ' ================================================================ Public Function WinError(ByVal lLastDLLError As Long) As String Dim sBuff As String Dim lCount As Long '返回与LastDLLError关联的错误消息: sBuff = String$(256, 0) lCount = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM Or FORMAT_MESSAGE_IGNORE_INSERTS, _ 0, lLastDLLError, 0%26, sBuff, Len(sBuff), ByVal 0) If lCount Then WinError = Left$(sBuff, lCount) End If End Function Public Function IsNT() As Boolean Static bOnce As Boolean Static bValue As Boolean '返回系统是否为NT: If Not (bOnce) Then Dim tVI As OSVERSIONINFO tVI.dwOSVersionInfoSize = Len(tVI) If (GetVersionEx(tVI) %26lt; 0) Then bValue = (tVI.dwPlatformId = VER_PLATFORM_WIN32_NT) bOnce = True End If End If IsNT = bValue End Function Private Function NTEnableShutDown(ByRef sMsg As String) As Boolean Dim tLUID As LUID Dim hProcess As Long Dim hToken As Long Dim tTP As TOKEN_PRIVILEGES, tTPOld As TOKEN_PRIVILEGES Dim lTpOld As Long Dim lR As Long '在NT下，我们必须给试图关闭系统的进程SE_SHUTDOWN_NAME特权 '否则，所有企图关闭系统的调用都会无效～ '寻找Shoudown特权令牌的LUID: lR = LookupPrivilegeValue(vbNullString, SE_SHUTDOWN_NAME, tLUID) '如果我们找到了 If (lR %26lt; 0) Then '取得当前进程的句柄: hProcess = GetCurrentProcess() If (hProcess %26lt; 0) Then '打开令牌来Adjust和Query(用户可能没有权限) lR = OpenProcessToken(hProcess, TOKEN_ADJUST_PRIVILEGES Or TOKEN_QUERY, hToken) If (lR %26lt; 0) Then '好，我们现在可以调整Shutdown特权了: With tTP .PrivilegeCount = 1 With .Privileges(0) .Attributes = SE_PRIVILEGE_ENABLED .pLuid.HighPart = tLUID.HighPart .pLuid.LowPart = tLUID.LowPart End With End With '现在允许这个进程关闭系统: lR = AdjustTokenPrivileges(hToken, 0, tTP, Len(tTP), tTPOld, lTpOld) If (lR %26lt; 0) Then NTEnableShutDown = True Else Err.Raise eeSSDErrorBase + 6, App.EXEName %26 ".mShutDown", "不能 shutdown:你没有关闭本系统的权限。[" %26 WinError(Err.LastDllError) %26 "]" End If '记得用完后关闭这个句柄: CloseHandle hToken Else Err.Raise eeSSDErrorBase + 6, App.EXEName %26 ".mShutDown", "不能 shutdown:你没有关闭本系统的权限。[" %26 WinError(Err.LastDllError) %26 "]" End If Else Err.Raise eeSSDErrorBase + 5, App.EXEName %26 ".mShutDown", "不能shutdown: 不能终止当前进程。[" %26 WinError(Err.LastDllError) %26 "]" End If Else Err.Raise eeSSDErrorBase + 4, App.EXEName %26 ".mShutDown", "不能shutdown: 找不到SE_SHUTDOWN_NAME特权值。[" %26 WinError(Err.LastDllError) %26 "]" End If End Function Public Function NTForceTimedShutdown( _ Optional ByVal lTimeOut As Long = -1, _ Optional ByVal sMsg As String = "", _ Optional ByVal sMachineNetworkName As String = vbNullString, _ Optional ByVal bForceAppsToClose As Boolean = False, _ Optional ByVal bReboot As Boolean = False _ ) As Boolean Dim lR As Long If IsNT Then '如果我们在NT下，确信我们已经给了这个进程关闭系统的特权: If Not (NTEnableShutDown(sMsg)) Then Exit Function End If '这是定时关闭系统的代码: lR = InitiateSystemShutdown(sMachineNetworkName, sMsg, lTimeOut, bForceAppsToClose, bReboot) If (lR = 0) Then Err.Raise eeSSDErrorBase + 2, App.EXEName %26 ".mShutDown", "InitiateSystemShutdown failed: " %26 WinError(Err.LastDllError) End If Else Err.Raise eeSSDErrorBase + 1, App.EXEName %26 ".mShutDown", "函数仅在Windows NT下有效。" End If End Function Public Function NTAbortTimedShutdown(Optional ByVal sMachineNetworkName As String = vbNullString) AbortSystemShutdown sMachineNetworkName End Function 用vb关闭与打开显示器 在窗口中放置两个按扭名为command1和command2,将下面的代码放到程序中 Private Declare Function GetVersionEx Lib "kernel32" Alias "GetVersionExA" (lpVersionInformation As OSVERSIONINFO) As Long Private Type OSVERSIONINFO dwOSVersionInfoSize As Long dwMajorVersion As Long dwMinorVersion As Long dwBuildNumber As Long dwPlatformId As Long szCSDVersion(1 To 128) As Byte End Type Private Declare Function SendScreenMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long Private Const MONITOR_ON = -1& Private Const MONITOR_LOWPOWER = 1& Private Const MONITOR_OFF = 2& Private Const SC_MONITORPOWER = &HF170& Private Const WM_SYSCOMMAND = &H112 Private Sub Command1_Click() If IsNT Then Call SendScreenMessage(Me.hwnd, WM_SYSCOMMAND, SC_MONITORPOWER, ByVal MONITOR_LOWPOWER) Else Call SendScreenMessage(Me.hwnd, WM_SYSCOMMAND, SC_MONITORPOWER, ByVal 0) End If End Sub Private Sub Command2_Click() Call SendScreenMessage(Me.hwnd, WM_SYSCOMMAND, SC_MONITORPOWER, ByVal MONITOR_ON) End Sub Public Function IsNT() As Boolean '判断系统 Dim OSVer As OSVERSIONINFO OSVer.dwOSVersionInfoSize = LenB(OSVer) GetVersionEx OSVer 'IsNT = OSVer.dwPlatformId = VER_PLATFORM_WIN32_NT If OSVer.dwMajorVersion < 5 Then IsNT = False ElseIf OSVer.dwMajorVersion >= 5 Then IsNT = True End If End Function