Windows模擬電腦假死之鍵盤鼠標(biāo)無響應(yīng)

1. 場景需求

模擬Windows電腦假死，失去鍵盤鼠標(biāo)響應(yīng)。

2. 解決方案

采用Windows系統(tǒng)提供的鉤子(Hook) API 攔截系統(tǒng)鼠標(biāo)鍵盤消息。

3. 示例程序

【1】. 創(chuàng)建MFC對話框項目

新建一個MFC應(yīng)用程序項目，項目名稱取名為 "FakeDeath" ，如下圖所示：

應(yīng)用程序類型，選擇【基于對話框】項目。

其余配置選項，默認(rèn)即可。

創(chuàng)建完成。

【2】. 編譯并運行程序

右鍵項目名稱，選擇【生成】。

運行程序。

【3】. 編輯對話框

調(diào)取《資源視圖》界面，編輯對話框控件。

雙擊【鍵盤鼠標(biāo)假死】按鈕，向?qū)詣舆M入到對應(yīng)按鈕的處理函數(shù)上。

【4】. 添加鍵盤鼠標(biāo)系統(tǒng)鉤子

鍵盤鼠標(biāo)系統(tǒng)鉤子代碼如下：

/*------------------------------------開始添加鍵盤鼠標(biāo)系統(tǒng)鉤子代碼--------------------------------*///鼠標(biāo)鉤子句柄;
HHOOK g_hMouseHook = nullptr;
//鍵盤鉤子句柄;
HHOOK g_hKeyboardHook = nullptr;//安裝鉤子;
void InstallSysHook();
//卸載鉤子;
void UninstallSysHook();//鍵盤鉤子處理函數(shù);
static LRESULT CALLBACK OnKeyboardHookProc(int nCode, WPARAM wParam, LPARAM lParam);
//鼠標(biāo)鉤子處理函數(shù);
static LRESULT CALLBACK OnMouseHookProc(int nCode, WPARAM wParam, LPARAM lParam);/
/
/
void InstallSysHook()
{g_hMouseHook = SetWindowsHookEx(WH_MOUSE_LL, OnMouseHookProc, GetModuleHandleA(0), 0);g_hKeyboardHook = SetWindowsHookEx(WH_KEYBOARD_LL, OnKeyboardHookProc, GetModuleHandleA(0), 0);
}void UninstallSysHook()
{if (g_hKeyboardHook){UnhookWindowsHookEx(g_hKeyboardHook);}if (g_hMouseHook){UnhookWindowsHookEx(g_hMouseHook);}
}LRESULT CALLBACK OnKeyboardHookProc(int nCode, WPARAM wParam, LPARAM lParam)
{if (nCode == HC_ACTION){// 【A】鍵盤按下時程序結(jié)束KBDLLHOOKSTRUCT *ks = (KBDLLHOOKSTRUCT*)lParam;if (ks->vkCode == 'A'){UninstallSysHook();exit(0);}}// return CallNextHookEx(g_hKeyboardHook, nCode, wParam, lParam);return 1;
}LRESULT CALLBACK OnMouseHookProc(int nCode, WPARAM wParam, LPARAM lParam)
{if (nCode == HC_ACTION){// 處理鼠標(biāo)消息;// ...}// return CallNextHookEx(g_hMouseHook, nCode, wParam, lParam);return 1;
}/*-----------------------------------鍵盤鼠標(biāo)系統(tǒng)鉤子添加結(jié)束--------------------------------*/

FakeDeathDlg.cpp源文件修改如下

// FakeDeathDlg.cpp : 實現(xiàn)文件
//#include "stdafx.h"
#include "FakeDeath.h"
#include "FakeDeathDlg.h"
#include "afxdialogex.h"#ifdef _DEBUG
#define new DEBUG_NEW
#endif// 用于應(yīng)用程序“關(guān)于”菜單項的 CAboutDlg 對話框class CAboutDlg : public CDialogEx
{
public:CAboutDlg();// 對話框數(shù)據(jù)enum { IDD = IDD_ABOUTBOX };protected:virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV 支持// 實現(xiàn)
protected:DECLARE_MESSAGE_MAP()
};CAboutDlg::CAboutDlg() : CDialogEx(CAboutDlg::IDD)
{
}void CAboutDlg::DoDataExchange(CDataExchange* pDX)
{CDialogEx::DoDataExchange(pDX);
}BEGIN_MESSAGE_MAP(CAboutDlg, CDialogEx)
END_MESSAGE_MAP()// CFakeDeathDlg 對話框CFakeDeathDlg::CFakeDeathDlg(CWnd* pParent /*=NULL*/): CDialogEx(CFakeDeathDlg::IDD, pParent)
{m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}void CFakeDeathDlg::DoDataExchange(CDataExchange* pDX)
{CDialogEx::DoDataExchange(pDX);
}BEGIN_MESSAGE_MAP(CFakeDeathDlg, CDialogEx)ON_WM_SYSCOMMAND()ON_WM_PAINT()ON_WM_QUERYDRAGICON()ON_BN_CLICKED(IDC_BTN_INSTALL, &CFakeDeathDlg::OnBnClickedBtnInstall)
END_MESSAGE_MAP()// CFakeDeathDlg 消息處理程序BOOL CFakeDeathDlg::OnInitDialog()
{CDialogEx::OnInitDialog();// 將“關(guān)于...”菜單項添加到系統(tǒng)菜單中。// IDM_ABOUTBOX 必須在系統(tǒng)命令范圍內(nèi)。ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);ASSERT(IDM_ABOUTBOX < 0xF000);CMenu* pSysMenu = GetSystemMenu(FALSE);if (pSysMenu != NULL){BOOL bNameValid;CString strAboutMenu;bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX);ASSERT(bNameValid);if (!strAboutMenu.IsEmpty()){pSysMenu->AppendMenu(MF_SEPARATOR);pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);}}// 設(shè)置此對話框的圖標(biāo)。  當(dāng)應(yīng)用程序主窗口不是對話框時，框架將自動//  執(zhí)行此操作SetIcon(m_hIcon, TRUE);			// 設(shè)置大圖標(biāo)SetIcon(m_hIcon, FALSE);		// 設(shè)置小圖標(biāo)// TODO:  在此添加額外的初始化代碼return TRUE;  // 除非將焦點設(shè)置到控件，否則返回 TRUE
}void CFakeDeathDlg::OnSysCommand(UINT nID, LPARAM lParam)
{if ((nID & 0xFFF0) == IDM_ABOUTBOX){CAboutDlg dlgAbout;dlgAbout.DoModal();}else{CDialogEx::OnSysCommand(nID, lParam);}
}// 如果向?qū)υ捒蛱砑幼钚』粹o，則需要下面的代碼
//  來繪制該圖標(biāo)。  對于使用文檔/視圖模型的 MFC 應(yīng)用程序，
//  這將由框架自動完成。void CFakeDeathDlg::OnPaint()
{if (IsIconic()){CPaintDC dc(this); // 用于繪制的設(shè)備上下文SendMessage(WM_ICONERASEBKGND, reinterpret_cast<WPARAM>(dc.GetSafeHdc()), 0);// 使圖標(biāo)在工作區(qū)矩形中居中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;// 繪制圖標(biāo)dc.DrawIcon(x, y, m_hIcon);}else{CDialogEx::OnPaint();}
}//當(dāng)用戶拖動最小化窗口時系統(tǒng)調(diào)用此函數(shù)取得光標(biāo)
//顯示。
HCURSOR CFakeDeathDlg::OnQueryDragIcon()
{return static_cast<HCURSOR>(m_hIcon);
}/*---------------------------------開始添加鍵盤鼠標(biāo)系統(tǒng)鉤子代碼-----------------------------------*///鼠標(biāo)鉤子句柄;
HHOOK g_hMouseHook = nullptr;
//鍵盤鉤子句柄;
HHOOK g_hKeyboardHook = nullptr;//安裝鉤子;
void InstallSysHook();
//卸載鉤子;
void UninstallSysHook();//鍵盤鉤子處理函數(shù);
static LRESULT CALLBACK OnKeyboardHookProc(int nCode, WPARAM wParam, LPARAM lParam);
//鼠標(biāo)鉤子處理函數(shù);
static LRESULT CALLBACK OnMouseHookProc(int nCode, WPARAM wParam, LPARAM lParam);/
/
/
void InstallSysHook()
{g_hMouseHook = SetWindowsHookEx(WH_MOUSE_LL, OnMouseHookProc, GetModuleHandleA(0), 0);g_hKeyboardHook = SetWindowsHookEx(WH_KEYBOARD_LL, OnKeyboardHookProc, GetModuleHandleA(0), 0);
}void UninstallSysHook()
{if (g_hKeyboardHook){UnhookWindowsHookEx(g_hKeyboardHook);}if (g_hMouseHook){UnhookWindowsHookEx(g_hMouseHook);}
}LRESULT CALLBACK OnKeyboardHookProc(int nCode, WPARAM wParam, LPARAM lParam)
{if (nCode == HC_ACTION){// 【A】鍵盤按下時程序結(jié)束KBDLLHOOKSTRUCT *ks = (KBDLLHOOKSTRUCT*)lParam;if (ks->vkCode == 'A'){UninstallSysHook();exit(0);}}// return CallNextHookEx(g_hKeyboardHook, nCode, wParam, lParam);return 1;
}LRESULT CALLBACK OnMouseHookProc(int nCode, WPARAM wParam, LPARAM lParam)
{if (nCode == HC_ACTION){// 處理鼠標(biāo)消息;// ...}// return CallNextHookEx(g_hMouseHook, nCode, wParam, lParam);return 1;
}/*--------------------------------------鍵盤鼠標(biāo)系統(tǒng)鉤子添加結(jié)束--------------------------------*/// 鍵盤鼠標(biāo)假死按鈕處理函數(shù)
void CFakeDeathDlg::OnBnClickedBtnInstall()
{// 安裝系統(tǒng)鉤子;InstallSysHook();
}

【5】. 運行效果

點擊【鼠標(biāo)鍵盤假死】按鈕后，桌面進入假死狀態(tài)，除了【Ctrl+Alt+Delete】和【A】鍵外，其他鍵盤和鼠標(biāo)輸入均不響應(yīng)。