| 发表于：2007-09-12 11:38:031楼 得分:100 |
using system;
using system.drawing;
using system.collections;
using system.componentmodel;
using system.windows.forms;
using system.runtime.interopservices;
using system.threading;
namespace 文件和系统操作
{
public class 注销和关闭计算机 : system.windows.forms.form
{
[structlayout（layoutkind.sequential, pack=1)]
public struct tokprivlluid
{
public int count;
public long luid;
public int attr;
}
// getcurrentprocess函数返回当前进程的一个句柄
[dllimport（ "kernel32.dll ",exactspelling=true)]
public static extern intptr getcurrentprocess（);
// openprocesstoken 函数打开一个进程的访问代号
[dllimport（ "advapi32.dll ",exactspelling=true,setlasterror=true)]
public static extern bool openprocesstoken（intptr processhandles, int desiredaccess, ref intptr tokenhandle);
// lookupprivilegevalue 函数获得本地唯一标识符（luid）,用于在特定系统中表示特定优先权
[dllimport（ "advapi32.dll ",setlasterror=true)]
public static extern bool lookupprivilegevalue（string lpsystemname, string lpname, ref long lpluid);
// adjusttokenprivileges 函数使允许或者禁用指定访问记号的优先权
// 允许或者禁用优先权需要token_adjust_privileges 访问权限
[dllimport（ "advapi32.dll ",exactspelling=true,setlasterror=true)]
public static extern bool adjusttokenprivileges（intptr tokenhandle, bool disableallprivileges,
ref tokprivlluid newstate, int bufferlength, intptr previousstate, intptr returnlength);
// exitwindowsex 函数可以退出登陆、关机或者重新启动系统
[dllimport（ "user32.dll ",exactspelling=true,setlasterror=true)]
public static extern bool exitwindowsex（int flg, int rea);
private system.threading.timer timer;
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; //注销
private const int ewx_shutdown = 0x00000001; //关机
private const int ewx_reboot = 0x00000002; //重起
private const int ewx_force = 0x00000004;
private system.windows.forms.label label1;
private system.windows.forms.textbox textbox1;
private system.windows.forms.button button1;
private system.windows.forms.button button2;
private system.windows.forms.button button3;
private system.componentmodel.container components = null;
public 注销和关闭计算机（)
{
initializecomponent（);
this.textbox1.text = （environment.tickcount / （1000 * 60)).tostring（) + "分钟 ";
timer = new system.threading.timer（new timercallback（ontimer), null, 0, 1000);
}
protected override void dispose（ bool disposing )
{
if（ disposing )
{
if（components != null)
{
components.dispose（);
}
}
base.dispose（ disposing );
}
#region windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void initializecomponent（)
{
this.label1 = new system.windows.forms.label（);
this.textbox1 = new system.windows.forms.textbox（);
this.button1 = new system.windows.forms.button（);
this.button2 = new system.windows.forms.button（);
this.button3 = new system.windows.forms.button（);
this.suspendlayout（);
//
// label1
//
this.label1.location = new system.drawing.point（56, 32);
this.label1.name = "label1 ";
this.label1.size = new system.drawing.size（168, 23);
this.label1.tabindex = 0;
this.label1.text = "系统已运行时间 ";
//
// textbox1
//
this.textbox1.location = new system.drawing.point（56, 72);
this.textbox1.name = "textbox1 ";
this.textbox1.size = new system.drawing.size（176, 21);
this.textbox1.tabindex = 1;
this.textbox1.text = " ";
//
// button1
//
this.button1.location = new system.drawing.point（40, 144);
this.button1.name = "button1 ";
this.button1.size = new system.drawing.size（56, 23);
this.button1.tabindex = 2;
this.button1.text = "关闭 ";
this.button1.click += new system.eventhandler（this.button1_click);
//
// button2
//
this.button2.location = new system.drawing.point（128, 144);
this.button2.name = "button2 ";
this.button2.size = new system.drawing.size（56, 23);
this.button2.tabindex = 3;
this.button2.text = "注销 ";
this.button2.click += new system.eventhandler（this.button2_click);
//
// button3
//
this.button3.location = new system.drawing.point（216, 144);
this.button3.name = "button3 ";
this.button3.size = new system.drawing.size（56, 23);
this.button3.tabindex = 4;
this.button3.text = "重起 ";
this.button3.click += new system.eventhandler（this.button3_click);
//
// 注销和关闭计算机
//
this.autoscalebasesize = new system.drawing.size（6, 14);
this.clientsize = new system.drawing.size（304, 214);
this.controls.add（this.button3);
this.controls.add（this.button2);
this.controls.add（this.button1);
this.controls.add（this.textbox1);
this.controls.add（this.label1);
this.name = "注销和关闭计算机 ";
this.text = "注销和关闭计算机 ";
this.resumelayout（false);
}
#endregion
private static void rebootcommand（int flg)
{
bool ok;
tokprivlluid 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（flg, 0);
}
//获得系统已运行的时间
private void ontimer（object state)
{
this.textbox1.text = （environment.tickcount / （1000 * 60)).tostring（) + "分钟 ";
this.textbox1.refresh（);
}
private void button1_click（object sender, system.eventargs e)
{
rebootcommand（ewx_shutdown + ewx_force);
}
private void button2_click（object sender, system.eventargs e)
{
rebootcommand（ewx_logoff + ewx_force);
}
private void button3_click（object sender, system.eventargs e)
{
rebootcommand（ewx_reboot + ewx_force);
}
}
}
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