C#实现重启、关机、开关显示器的方法

using System;
using System.Runtime.InteropServices;// public static void Reboot() 重启// public static void PowerOff()关机// public static void LogOff()注销// public static void CloseMonitor(IntPtr handle)关闭显示器// public static void OpenMonitor(IntPtr handle)打开显示器 public class MyControl
{
[StructLayout(LayoutKind.Sequential, Pack = 1)]
private struct TokPriv1Luid
{
public int Count;
public long Luid;
public int Attr;
} [DllImport("kernel32.dll", ExactSpelling = true)]
private static extern IntPtr GetCurrentProcess(); [DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)]
private static extern bool OpenProcessToken(IntPtr h, int acc, ref IntPtr phtok); [DllImport("advapi32.dll", SetLastError = true)]
private static extern bool LookupPrivilegeValue(string host, string name, ref long pluid); [DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)]
private static extern bool AdjustTokenPrivileges(IntPtr htok, bool disall, ref TokPriv1Luid newst, int len, IntPtr prev, IntPtr relen); [DllImport("user32.dll", ExactSpelling = true, SetLastError = true)]
private static extern bool ExitWindowsEx(int DoFlag, int rea); [DllImport("user32.dll")]
public static extern IntPtr SendMessage(IntPtr hWnd, uint msg, uint wParam, int lParam); private const int SE_PRIVILEGE_ENABLED = 0x00000002;
private const int TOKEN_QUERY = 0x00000008;
private const int TOKEN_ADJUST_PRIVILEGES = 0x00000020;
private const string SE_SHUTDOWN_NAME = "SeShutdownPrivilege";
private const int EWX_LOGOFF = 0x00000000;
private const int EWX_SHUTDOWN = 0x00000001;
private const int EWX_REBOOT = 0x00000002;
private const int EWX_FORCE = 0x00000004;
private const int EWX_POWEROFF = 0x00000008;
private const int EWX_FORCEIFHUNG = 0x00000010; private const uint WM_SYSCOMMAND = 0x0112;
private const uint SC_MONITORPOWER = 0xF170; private static void DoExitWin(int DoFlag)
{
bool ok;
TokPriv1Luid tp;
IntPtr hproc = GetCurrentProcess();
IntPtr htok = IntPtr.Zero;
ok = OpenProcessToken(hproc, TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, ref htok); tp.Count = 1;
tp.Luid = 0;
tp.Attr = SE_PRIVILEGE_ENABLED;
ok = LookupPrivilegeValue(null, SE_SHUTDOWN_NAME, ref tp.Luid);
ok = AdjustTokenPrivileges(htok, false, ref tp, 0, IntPtr.Zero, IntPtr.Zero);
ok = ExitWindowsEx(DoFlag, 0);
} public static void Reboot()
{
DoExitWin(EWX_FORCE | EWX_REBOOT);
} public static void PowerOff()
{
DoExitWin(EWX_FORCE | EWX_POWEROFF);
} public static void LogOff()
{
DoExitWin(EWX_FORCE | EWX_LOGOFF);
} public static void CloseMonitor(IntPtr handle)
{
SendMessage(handle, WM_SYSCOMMAND, SC_MONITORPOWER, 2);
} public static void OpenMonitor(IntPtr handle)
{
SendMessage(handle, WM_SYSCOMMAND, SC_MONITORPOWER, -1);
}
}