C#实现关机、重启、注销

01	<PRE class=brush:csharp;collapse:true;>        //实现关机,重启,注销

02	[StructLayout(LayoutKind.Sequential, Pack = 1)]

03	internal struct TokPriv1Luid

04

05	public int Count;

06	public long Luid;

07	public int Attr;

08

09

10	//[DllImport]允许.NET调用任意非托管的C/C++基类库,包括操作系统中的API.但与基于COM的软件通信时，[DLLImport]不能使用.

11	[DllImport("kernel32.dll", ExactSpelling = true)]

12	internal static extern IntPtr GetCurrentProcess();

13

14	[DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)]

15	internal static extern bool OpenProcessToken(IntPtr h, int acc, ref   IntPtr phtok);

16

17	[DllImport("advapi32.dll", SetLastError = true)]

18	internal static extern bool LookupPrivilegeValue(string host, string name, ref   long pluid);

19

20	[DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)]

21	internal static extern bool AdjustTokenPrivileges(IntPtr htok, bool disall,

22	ref   TokPriv1Luid newst, int len, IntPtr prev, IntPtr relen);

23

24	[DllImport("user32.dll", ExactSpelling = true, SetLastError = true)]

25	internal static extern bool ExitWindowsEx(int flg, int rea);

26

27	internal const int SE_PRIVILEGE_ENABLED = 0x00000002;

28	internal const int TOKEN_QUERY = 0x00000008;

29	internal const int TOKEN_ADJUST_PRIVILEGES = 0x00000020;

30	internal const string SE_SHUTDOWN_NAME = "SeShutdownPrivilege"

31	internal const int EWX_LOGOFF = 0x00000000;

32	internal const int EWX_SHUTDOWN = 0x00000001;

33	internal const int EWX_REBOOT = 0x00000002;

34	internal const int EWX_FORCE = 0x00000004;

35	internal const int EWX_POWEROFF = 0x00000008;

36	internal const int EWX_FORCEIFHUNG = 0x00000010;

37

38	private static void DoExitWin(int flg)

39

40

bool ok;

41	TokPriv1Luid tp;

42	IntPtr hproc = GetCurrentProcess();

43	IntPtr htok = IntPtr.Zero;

44	ok = OpenProcessToken(hproc, TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, ref   htok);

45	tp.Count = 1;

46	tp.Luid = 0;

47	tp.Attr = SE_PRIVILEGE_ENABLED;

48	ok = LookupPrivilegeValue(null, SE_SHUTDOWN_NAME, ref   tp.Luid);

49	ok = AdjustTokenPrivileges(htok, falseref   tp, 0, IntPtr.Zero, IntPtr.Zero);

50	ok = ExitWindowsEx(flg, 0);

51

52

53

//重启

54	public void Reboot()

55

56	DoExitWin(EWX_FORCE | EWX_REBOOT);

57

58

59

//关机

60	public void PowerOff()

61

62	DoExitWin(EWX_FORCE | EWX_POWEROFF);

63

64

65

//注销

66	public static void LogoOff()

67

68	DoExitWin(EWX_FORCE | EWX_LOGOFF);

69

70

71

</PRE>

72	<BR>        }<BR><BR>