系统编程

开发平台：
Visual C++

NTShutdownDlg.cpp：源码内容
							// NTShutdownDlg.cpp : implementation file
//
#include "stdafx.h"
#include "NTShutdown.h"
#include "NTShutdownDlg.h"
#include   <windows.h>  
#include   <tchar.h>  
#include   <stdio.h>   
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CAboutDlg dialog used for App About
class CAboutDlg : public CDialog
{
public:
	CAboutDlg();
	
	// Dialog Data
	//{{AFX_DATA(CAboutDlg)
	enum { IDD = IDD_ABOUTBOX };
	//}}AFX_DATA
	
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CAboutDlg)
protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
	//}}AFX_VIRTUAL
	
	// Implementation
protected:
	//{{AFX_MSG(CAboutDlg)
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD)
{
	//{{AFX_DATA_INIT(CAboutDlg)
	//}}AFX_DATA_INIT
}
void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CAboutDlg)
	//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog)
//{{AFX_MSG_MAP(CAboutDlg)
// No message handlers
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CNTShutdownDlg dialog
CNTShutdownDlg::CNTShutdownDlg(CWnd* pParent /*=NULL*/)
: CDialog(CNTShutdownDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CNTShutdownDlg)
	// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}
void CNTShutdownDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CNTShutdownDlg)
	// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}
BEGIN_MESSAGE_MAP(CNTShutdownDlg, CDialog)
//{{AFX_MSG_MAP(CNTShutdownDlg)
ON_WM_SYSCOMMAND()
ON_WM_PAINT()
ON_WM_QUERYDRAGICON()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
/////////////////////////////////////////////////////////////////////////////
// CNTShutdownDlg message handlers
BOOL CNTShutdownDlg::OnInitDialog()
{
	CDialog::OnInitDialog();
	
	// Add "About..." menu item to system menu.
	
	// IDM_ABOUTBOX must be in the system command range.
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);
	ASSERT(IDM_ABOUTBOX < 0xF000);
	
	CMenu* pSysMenu = GetSystemMenu(FALSE);
	if (pSysMenu != NULL)
	{
		CString strAboutMenu;
		strAboutMenu.LoadString(IDS_ABOUTBOX);
		if (!strAboutMenu.IsEmpty())
		{
			pSysMenu->AppendMenu(MF_SEPARATOR);
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);
		}
	}
	
	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	
	return TRUE;  // return TRUE  unless you set the focus to a control
}
void CNTShutdownDlg::OnSysCommand(UINT nID, LPARAM lParam)
{
	if ((nID & 0xFFF0) == IDM_ABOUTBOX)
	{
		CAboutDlg dlgAbout;
		dlgAbout.DoModal();
	}
	else
	{
		CDialog::OnSysCommand(nID, lParam);
	}
}
// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.
void CNTShutdownDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting
		
		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);
		
		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;
		
		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}
// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CNTShutdownDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}
void CNTShutdownDlg::OnOK() 
{
	// TODO: Add extra validation here
//	WinShutdown(EWX_POWEROFF|EWX_FORCE);
	WinShutdown(EWX_LOGOFF|EWX_FORCE);
}
void CNTShutdownDlg::WinShutdown(UINT ShutdownFlag)
{  
	OSVERSIONINFO   oi;  
	oi.dwOSVersionInfoSize   =   sizeof(OSVERSIONINFO);  
	GetVersionEx(&oi);  
	//如果是NT/2000下需先设置相关权限  
	if   (oi.dwPlatformId   ==   VER_PLATFORM_WIN32_NT)    
	{  
		HANDLE   handle;  
		TOKEN_PRIVILEGES   tkp;  
		
		OpenProcessToken(GetCurrentProcess(),   TOKEN_ADJUST_PRIVILEGES   |   TOKEN_QUERY,   &handle);  
		LookupPrivilegeValue(NULL,   SE_SHUTDOWN_NAME,   &tkp.Privileges[0].Luid);  
		
		tkp.PrivilegeCount   =   1;     //   one   privilege   to   set          
		tkp.Privileges[0].Attributes   =   SE_PRIVILEGE_ENABLED;    
		
		AdjustTokenPrivileges(handle,   FALSE,   &tkp,   0,   (PTOKEN_PRIVILEGES)NULL,   0);  
	}  
	
	//WIN98下关机或注销时可直接调用下面涵数既可  
	::ExitWindowsEx(ShutdownFlag,0);  
}   

						