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基于C#實(shí)現(xiàn)電腦系統(tǒng)掛機(jī)鎖

更新時(shí)間：2022年12月18日 08:41:18 作者：芝麻粒兒

這篇文章主要為大家詳細(xì)介紹了如何利用C#實(shí)現(xiàn)電腦系統(tǒng)掛機(jī)鎖，文中的示例代碼講解詳細(xì)，對(duì)我們學(xué)習(xí)C#有一定的幫助，感興趣的小伙伴可以跟隨小編一起了解一下

實(shí)踐過(guò)程

效果

代碼

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }
    private Point mouseOffset;//鼠標(biāo)位置
    private bool isMouseDown = false;//表示鼠標(biāo)是否按下
    private void pictureBox2_Click(object sender, EventArgs e)
    {
        Application.Exit();//窗體的關(guān)閉按鈕
    }

    private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
    {
        int xOffset;
        int yOffset;
        if (e.Button == MouseButtons.Left)
        {
            xOffset = -e.X;
            yOffset = -e.Y;
            mouseOffset = new Point(xOffset, yOffset);
            isMouseDown = true;
        }
    }

    private void pictureBox1_MouseMove(object sender, MouseEventArgs e)
    {
        if (isMouseDown)
        {
            Point mousePos = Control.MousePosition;
            mousePos.Offset(mouseOffset.X, mouseOffset.Y);
            Location = mousePos;
        }
    }

    private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
    {
        if (e.Button == MouseButtons.Left)
        {
            isMouseDown = false;
        }
    }

    private void button2_Click(object sender, EventArgs e)
    {
        Application.Exit();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        if (txtPwd.Text.Trim() == "" || txtPwd2.Text.Trim() == "")//判斷是否輸入密碼
        {
            MessageBox.Show("請(qǐng)輸入密碼！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
            return;
        }
        else
        {
            if (txtPwd2.Text.Trim() == txtPwd.Text.Trim())//如果兩次密碼輸入一致
            {
                Form2 frm2 = new Form2();//實(shí)例化Form2窗體
                frm2.s = this.Size;//傳遞窗體大小
                frm2.x = this.Location.X;//傳遞窗體的X坐標(biāo)
                frm2.y = this.Location.Y;//傳遞窗體的Y坐標(biāo)
                frm2.infos = txtInfo.Text.Trim();//傳遞掛機(jī)信息
                frm2.pwd = txtPwd2.Text.Trim();//傳遞解鎖密碼
                this.Hide();//隱藏當(dāng)前窗體
                frm2.ShowDialog();//打開(kāi)Form2窗體
            }
            else
            {
                MessageBox.Show("兩次密碼不一致！", "提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
                return;
            }
        }
    }

    private void Form1_Load(object sender, EventArgs e)
    {

    }
}

public partial class Form2 : Form
{
    public Form2()
    {
        InitializeComponent();
    }
    public Size s;//獲取鼠標(biāo)活動(dòng)的區(qū)域
    public int x;//獲取鼠標(biāo)活動(dòng)區(qū)域的X坐標(biāo)
    public int y;//獲取鼠標(biāo)活動(dòng)區(qū)域的Y坐標(biāo)
    public string infos;//獲取掛機(jī)信息
    public string pwd;//獲取解鎖密碼
    myHook h = new myHook();//實(shí)例化公共類
    private void Form2_Load(object sender, EventArgs e)
    {
        label1.Location = new Point(x,y-50);//設(shè)置顯示掛機(jī)信息的位置
        label1.Text = infos;//顯示掛機(jī)信息
        base.Opacity = 0.5;//設(shè)置掛機(jī)界面透明度
        h.InsertHook();//安裝鉤子
    }

    private void Form2_MouseMove(object sender, MouseEventArgs e)
    {
        Cursor.Clip = new Rectangle(x, y, s.Width, s.Height);//設(shè)置鼠標(biāo)活動(dòng)的區(qū)域
    }

    private void Form2_MouseClick(object sender, MouseEventArgs e)
    {
        Form3 frm3 = new Form3();//實(shí)例化Form3窗體
        frm3.x = x;//傳遞X坐標(biāo)
        frm3.y = y;//傳遞Y坐標(biāo)
        frm3.infos = infos;//傳遞掛機(jī)信息
        frm3.pwd = pwd;//傳遞解鎖密碼
        frm3.ShowDialog();//打開(kāi)解鎖界面
    }

    private void timer1_Tick(object sender, EventArgs e)
    {
        Process[] p = Process.GetProcesses();//獲取所有系統(tǒng)運(yùn)行的進(jìn)程
        foreach (Process p1 in p)//遍歷進(jìn)程
        {
            try
            {
                //如果進(jìn)程中存在名為“taskmgr”，則說(shuō)明任務(wù)管理器已經(jīng)打開(kāi)   
                if (p1.ProcessName.ToLower().Trim() == "taskmgr")
                {
                    p1.Kill();//關(guān)掉任務(wù)管理器的進(jìn)程
                    Cursor.Clip = new Rectangle(x, y, s.Width, s.Height);//重新設(shè)置鼠標(biāo)活動(dòng)的區(qū)域
                    return;
                }
            }
            catch
            {
                return;
            }
        }
    }

    private void Form2_FormClosing(object sender, FormClosingEventArgs e)
    {
        h.UnInsertHook();//卸載鉤子
        timer1.Stop();//停止計(jì)時(shí)器
    }
}

public partial class Form3 : Form
{
    public Form3()
    {
        InitializeComponent();
    }
    public int x;//鼠標(biāo)活動(dòng)區(qū)域的X坐標(biāo)
    public int y;//鼠標(biāo)活動(dòng)區(qū)域的Y坐標(biāo)
    public string infos;//掛機(jī)界面顯示的信息
    public string pwd;//解鎖密碼
    private void Form3_Load(object sender, EventArgs e)
    {
        this.TopMost = true;//設(shè)置停靠在最前端
        this.Location = new Point(x, y);//設(shè)置窗體位置
        lblinfo.Text = infos;//顯示掛機(jī)信息
    }

    private void button1_Click(object sender, EventArgs e)
    {
        if (txtPwd.Text.Trim() == pwd)//判斷輸入的密碼是否正確
        {
            Application.Exit();//如果正確則退出掛機(jī)界面
        }
        else//否則
        {
            lblinfo.Text = "輸入解鎖密碼錯(cuò)誤，請(qǐng)重新輸入！";//提示錯(cuò)誤信息
        }
    }

    private void button2_Click(object sender, EventArgs e)
    {
        this.TopMost = false;//取消?？孔钋暗脑O(shè)置
        this.Close();//關(guān)閉窗體
    }
}

public class myHook
{
    private IntPtr pKeyboardHook = IntPtr.Zero;//鍵盤(pán)鉤子句柄
    public delegate int HookProc(int nCode, Int32 wParam, IntPtr lParam);// 鉤子委托聲明
    //鍵盤(pán)鉤子委托實(shí)例不能省略變量
    private HookProc KeyboardHookProcedure;
    //底層鍵盤(pán)鉤子
    public const int idHook = 13;
    //安裝鉤子
    [DllImport("user32.dll", CallingConvention = CallingConvention.StdCall)]
    public static extern IntPtr SetWindowsHookEx(int idHook, HookProc lpfn,
        IntPtr pInstance, int threadId);
    //卸載鉤子
    [DllImport("user32.dll", CallingConvention = CallingConvention.StdCall)]
    public static extern bool UnhookWindowsHookEx(IntPtr pHookHandle);
    //鍵盤(pán)鉤子處理函數(shù)
    private int KeyboardHookProc(int nCode, Int32 wParam, IntPtr lParam)
    {
        KeyMSG m = (KeyMSG)Marshal.PtrToStructure(lParam, typeof(KeyMSG));
        if (pKeyboardHook != IntPtr.Zero)
        {
            switch (((Keys)m.vkCode))
            {
                case Keys.LWin:
                case Keys.RWin:
                case Keys.Delete:
                case Keys.Alt:
                case Keys.Escape:
                case Keys.F4:
                case Keys.Control:
                case Keys.Tab:
                    return 1;
            }
        }
        return 0;
    }
    //安裝鉤子
    public bool InsertHook()
    {
        IntPtr pIn = (IntPtr)4194304;
        if (this.pKeyboardHook == IntPtr.Zero)
        {
            this.KeyboardHookProcedure = new HookProc(KeyboardHookProc);
            this.pKeyboardHook = SetWindowsHookEx(idHook, KeyboardHookProcedure, pIn, 0);
            if (this.pKeyboardHook == IntPtr.Zero)
            {
                this.UnInsertHook();
                return false;
            }
        }

        return true;
    }
    //卸載鉤子
    public bool UnInsertHook()
    {
        bool result = true;
        if (this.pKeyboardHook != IntPtr.Zero)
        {
            result = (UnhookWindowsHookEx(this.pKeyboardHook) && result);
            this.pKeyboardHook = IntPtr.Zero;
        }
        return result;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct KeyMSG
    {
        public int vkCode;
        public int scanCode;
        public int flags;
        public int time;
        public int dwExtraInfo;
    }
}

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