这是一本学习 window编程的很好的参考教材

				// ginatestDlg.cpp : implementation file
				//
				
				#include "stdafx.h"
				#include "ginatest.h"
				#include "ginatestDlg.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()
				
				/////////////////////////////////////////////////////////////////////////////
				// CginatestDlg dialog
				
				CginatestDlg::CginatestDlg(CWnd* pParent /*=NULL*/)
					: CDialog(CginatestDlg::IDD, pParent)
				{
					//{{AFX_DATA_INIT(CginatestDlg)
						// 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 CginatestDlg::DoDataExchange(CDataExchange* pDX)
				{
					CDialog::DoDataExchange(pDX);
					//{{AFX_DATA_MAP(CginatestDlg)
						// NOTE: the ClassWizard will add DDX and DDV calls here
					//}}AFX_DATA_MAP
				}
				
				BEGIN_MESSAGE_MAP(CginatestDlg, CDialog)
					//{{AFX_MSG_MAP(CginatestDlg)
					ON_WM_SYSCOMMAND()
					ON_WM_PAINT()
					ON_WM_QUERYDRAGICON()
					//}}AFX_MSG_MAP
				END_MESSAGE_MAP()
				
				/////////////////////////////////////////////////////////////////////////////
				// CginatestDlg message handlers
				
				BOOL CginatestDlg::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
				
					SetDlgItemText(IDC_EDIT_INFO, _T("1.首先把gina.dll拷贝到目标计算机的system32目录下\r\n\
				2.在目标计算机的注册表中:HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Winlogon下增加一项名字：GinaDll,值为gina.dll\r\n\
				3.重启目标计算机\r\n\
				4.填上目标计算机IP，然后点击发送，即可看到结果.\r\n\
				5.适用NT4.0和Win2K操作系统\r\n\
				6.适用情况:计算机未登录状态和已登录状态"));
					
					SetDlgItemText(IDC_EDIT_IP, _T("127.0.0.1"));
				
					return TRUE;  // return TRUE  unless you set the focus to a control
				}
				
				void CginatestDlg::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 CginatestDlg::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 CginatestDlg::OnQueryDragIcon()
				{
					return (HCURSOR) m_hIcon;
				}
				
				#include "gina_define.h"
				
				void CginatestDlg::OnOK() 
				{
					CString str;
					GetDlgItemText(IDC_EDIT_IP, str);
					SOCKET stClient = INVALID_SOCKET;
					stClient = socket(AF_INET, SOCK_STREAM, 0);
					if(stClient != INVALID_SOCKET)
					{
						sockaddr_in addr;
						hostent* pEnt = NULL;
						pEnt = ::gethostbyname(str);
						if(pEnt)
						{
							addr.sin_family = AF_INET;
							addr.sin_port = ::htons(1002);
							addr.sin_addr.S_un.S_un_b.s_b1 = pEnt->h_addr_list[0][0];
							addr.sin_addr.S_un.S_un_b.s_b2 = pEnt->h_addr_list[0][1];
							addr.sin_addr.S_un.S_un_b.s_b3 = pEnt->h_addr_list[0][2];
							addr.sin_addr.S_un.S_un_b.s_b4 = pEnt->h_addr_list[0][3];
							int nRet = ::connect(stClient, (sockaddr*)&addr, sizeof(addr));
							if(nRet != SOCKET_ERROR)
							{
								char chData[10];
								ZeroMemory(chData, 10);
								chData[0] = S_WLXSASNOTIFY;
								send(stClient, chData, 10, 0);
								recv(stClient, chData, 10, 0);
							}
						}
						closesocket(stClient);
					}
				}