C#挂机锁屏软件

【实例简介】挂机锁屏软件,功能强大。

开始挂机后，只有输入密码 才能进行操作，否则禁止任何操作。，解锁密码默认是：123456

【实例截图】

【核心代码】

using System;
using System.Diagnostics;
using System.Reflection;
using System.Runtime.InteropServices;
using System.Threading;
using System.Windows.Forms;
using CCWin;

namespace WindowsLockDemo
{
    public partial class FrmMain : Form
    {
        [DllImport("user32.dll", EntryPoint = "PostMessage")]
        public static extern int PostMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);
        public const int WM_SYSCOMMAND = 0x112;
        public const int SC_MINIMIZE = 0xF020;
        public const int SC_MAXIMIZE = 0xF030;

        public FrmMain()
        {
            InitializeComponent();
        }

        private void skinButton1_Click(object sender, EventArgs e)
        {
            if (skinTextBox1.Text.Trim().Equals("") || skinTextBox2.Text.Trim().Equals(""))
            {
                MessageBoxEx.Show("锁频密码不能为空或确认密码不能为空！");
                return;
            }
            if (skinTextBox1.Text.Trim().Length < 6)
            {
                MessageBoxEx.Show("锁频密码不能小于6位字符！");
                skinTextBox1.Text = "";
                skinTextBox2.Text = "";
                skinTextBox1.Focus();
                return;
            }
            if (skinTextBox1.Text.Trim() != skinTextBox2.Text.Trim())
            {
                MessageBoxEx.Show("锁频密码和确认密码不一致！");
                skinTextBox2.Text = "";
                skinTextBox2.Focus();
                return;
            }
            UserInfo.UserPassword = skinTextBox2.Text.Trim();
            this.Hide();
            FrmBack frmBack = new FrmBack();
            //打开解锁界面
            frmBack.Show();
        }

        private void FrmMain_FormClosed(object sender, FormClosedEventArgs e)
        {
            System.Environment.Exit(0);
        }
    }
}