subject_35982.htm

一些关于vc的问答

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序号：35982 发表者：林城宇 发表日期：2003-04-11 00:56:51
<br>主题：win2000用ExitWindowsEx(EWX_SHUTDOWN|EWX_FORCE,0)
<br>内容：win2000用ExitWindowsEx(EWX_SHUTDOWN|EWX_FORCE,0)关机，可是关了到显示桌面的图片就不继续关闭电源了！！！要按一下 按钮才会跳出保存设置的对话框，不知道为什么？请教！！！<BR>换几个参数ExitWindowsEx(EWX_POWEROFF|EWX_FORCE,0)<BR>也不行！！！！
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<font color=red>答案被接受</font><br>回复者：bird 回复日期：2003-04-11 08:58:47
<br>内容：Windows NT/2000/XP: The following example enables the SE_SHUTDOWN_NAME privilege and then shuts down the system. <BR><BR>HANDLE hToken; <BR>TOKEN_PRIVILEGES tkp; <BR> <BR>// Get a token for this process. <BR> <BR>if (!OpenProcessToken(GetCurrentProcess(), <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &amp;hToken)) <BR>&nbsp;&nbsp;&nbsp;&nbsp;error("OpenProcessToken"); <BR> <BR>// Get the LUID for the shutdown privilege. <BR> <BR>LookupPrivilegeValue(NULL, SE_SHUTDOWN_NAME, <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&amp;tkp.Privileges[0].Luid); <BR> <BR>tkp.PrivilegeCount = 1;&nbsp;&nbsp;// one privilege to set&nbsp;&nbsp;&nbsp;&nbsp;<BR>tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED; <BR> <BR>// Get the shutdown privilege for this process. <BR> <BR>AdjustTokenPrivileges(hToken, FALSE, &amp;tkp, 0, <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(PTOKEN_PRIVILEGES)NULL, 0); <BR> <BR>// Cannot test the return value of AdjustTokenPrivileges. <BR> <BR>if (GetLastError() != ERROR_SUCCESS) <BR>&nbsp;&nbsp;&nbsp;&nbsp;error("AdjustTokenPrivileges"); <BR> <BR>// Shut down the system and force all applications to close. <BR> <BR>if (!ExitWindowsEx(EWX_SHUTDOWN | EWX_FORCE, 0)) <BR>&nbsp;&nbsp;&nbsp;&nbsp;error("ExitWindowsEx"); <BR>
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回复者：zjllyy 回复日期：2003-04-11 09:02:30
<br>内容：在win2000、nt下要先为该进程分配关机权限，用AdjustTokenPrivileges函数<BR>关机是要用EWX_SHUTDOWN|EWX_POWEROFF|EWX_FORCE
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回复者：林城宇 回复日期：2003-04-11 12:35:23
<br>内容：AdjustTokenPrivileges()<BR>呵呵这个我设置过了的，我的机器（win2000)可以关机的，可是我同学的机器也是win2000 不能彻底关机！也许是没有用administrator登陆的原因吧 我试试 呵呵！谢谢以上各位！
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