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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Microsoft.Win32;
using System.Security.Permissions;
namespace ScreenSaver
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
DisableTaskManager();
}
protected override void OnKeyDown(KeyEventArgs e)
{
if (e.KeyCode == Keys.F4 && e.Modifiers == Keys.Alt)
e.Handled = true;
else
base.OnKeyDown(e);
}
private void DisableTaskManager()
{
RegistryKey regkey = default(RegistryKey);
string keyValueInt = "1";
string subKey = "Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System";
try
{
regkey = Registry.CurrentUser.CreateSubKey(subKey);
regkey.SetValue("DisableTaskMgr", keyValueInt);
regkey.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
private void EnableTaskManager()
{
RegistryKey regkey = default(RegistryKey);
string subKey = "Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System";
try
{
regkey = Registry.CurrentUser.CreateSubKey(subKey);
regkey.DeleteValue("DisableTaskMgr");
regkey.Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.ToString());
}
}
private void Form1_Load(object sender, EventArgs e)
{
label1.Text = DateTime.Now.ToString();
timer1.Start();
timer2.Start();
}
private void Form1_MouseClick(object sender, MouseEventArgs e)
{
panel1.Left = (this.Width - panel1.Width) / 2;
panel1.Top = (this.Height - panel1.Height) / 2;
panel1.Visible = true;
textBox1.Text = "";
textBox1.Focus();
}
private void button1_Click(object sender, EventArgs e)
{
if (textBox1.Text == "xyz")
{
EnableTaskManager();
Application.Exit();
}
else
{
MessageBox.Show("密碼錯誤!", "忘記密碼?", MessageBoxButtons.OK, MessageBoxIcon.Error);
textBox1.Text = "";
textBox1.Focus();
}
}
private void button2_Click(object sender, EventArgs e)
{
panel1.Visible = false;
}
Random R = new Random();
private void timer1_Tick(object sender, EventArgs e)
{
label1.Text = DateTime.Now.ToString();
label1.Left -= 5;
if (label1.Right < 0)
{
label1.Left = this.ClientSize.Width;
label1.Top = R.Next(this.Height - label1.Height);
}
}
int curP = 0;
private void timer2_Tick(object sender, EventArgs e)
{
curP = 1;
if (curP > 8)
{
curP = 1;
}
switch (curP)
{
case 1:
this.BackgroundImage = Properties.Resources.P1;
break;
case 2:
this.BackgroundImage = Properties.Resources.P2;
break;
case 3:
this.BackgroundImage = Properties.Resources.P3;
break;
case 4:
this.BackgroundImage = Properties.Resources.P4;
break;
case 5:
this.BackgroundImage = Properties.Resources.P5;
break;
case 6:
this.BackgroundImage = Properties.Resources.P6;
break;
case 7:
this.BackgroundImage = Properties.Resources.P7;
break;
case 8:
this.BackgroundImage = Properties.Resources.P8;
break;
}
}
}
}