定时强制锁屏休息程序源码下载(C#)

【实例截图】

【核心代码】

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Microsoft.Win32;
using System.Diagnostics;
using System.Runtime.InteropServices;
using System.Threading;

namespace WinLockScreen
{
    public partial class Form1 : Form
    {
        #region 变量
        Random Random1 = new Random();
        #endregion

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            this.Hide();
            
            btnClose.Hide();
            lblInfo1.Text = "Width："   this.Width.ToString();
            lblInfo2.Text = "Height："   this.Height.ToString();
            lblInfo3.Text = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
            //lblInfo1.Text = this.Width.ToString();
            SetTopMost();
            btnClose.Location = new Point(this.Width - 150, this.Height - 50);
        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            e.Cancel = true;
        }

        private void btnClose_Click(object sender, EventArgs e)
        {
            this.Hide();
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            if (DateTime.Now.Minute % 30 != 0)
            //if (DateTime.Now.Second % 20 < 10)
            {
                this.Hide();
            }
            else
            {
                this.Show();
                SetTopMost();
                lblInfo3.Text = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");
                SetLblTipMessageChange();
            }
        }
        /// <summary>
        /// 设置窗体为最前显示
        /// </summary>
        void SetTopMost()
        {
            this.TopMost = false;
            this.TopMost = true;
        }
        /// <summary>
        /// 改变提示信息位置
        /// </summary>
        void SetLblTipMessageChange()
        {
            int width = this.Width - Random1.Next(this.Width - lblTipMessage.Width);
            int height = this.Height - Random1.Next(this.Height - lblTipMessage.Height);
            lblTipMessage.Location = new Point(width, height);
        }

        private void Form1_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.Modifiers == Keys.Alt && e.KeyCode == Keys.F4)
            {
                e.Handled = true;
            }
        }

        private void btnCloseTaskmgr_Click(object sender, EventArgs e)
        {
        }
    }
}