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   源码介绍

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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.Windows.Forms;

namespace djs_timer
{
    public partial class Form1 : Form
    {
         private int _nowSecond = 0;
        private bool _colonFlag=true ;
        //自定义方法：由显示字符获取相应的资源图像
        private Image GetResourceImage(string displayStr)
        {
            if (displayStr == "0")
                return global::djs_timer.Properties.Resources._0;
            else if (displayStr == "1")
                return global ::djs_timer.Properties.Resources._1;
            else if (displayStr == "2")
                return global ::djs_timer.Properties.Resources._2;
            else if (displayStr == "3")
                return global ::djs_timer.Properties.Resources._3;
            else if (displayStr == "4")
                return global ::djs_timer.Properties.Resources._4;
            else if (displayStr == "5")
                return global ::djs_timer.Properties.Resources._5;
            else if (displayStr == "6")
                return global ::djs_timer.Properties.Resources._6;
            else if (displayStr == "7")
                return global ::djs_timer.Properties.Resources._7;
            else if (displayStr == "8")
                return global ::djs_timer.Properties.Resources._8;
            else if (displayStr == "9")
                return global ::djs_timer.Properties.Resources._9;
            else if (displayStr == ".")
                return global ::djs_timer.Properties.Resources.dot1;
            else if (displayStr == ":")
                return global ::djs_timer.Properties.Resources.dot2;
            else
                return global ::djs_timer.Properties.Resources.blank;
        }
    
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            _colonFlag = true;
            buttonStart.Enabled = true;
            buttonPause.Enabled = false;
            buttonStop.Enabled = false;
            buttonPause.Text = "暂停";


        }

        private void timer1_Tick(object sender, EventArgs e)
        {
             _nowSecond--;//时间计数值(秒）加1
            int hour = _nowSecond / 36000;
            int minute = ((_nowSecond / 600) % 600);
            int second = _nowSecond % 600;
            if(_nowSecond <=0)
            {
              timer1.Enabled = false;
              timer2.Enabled = false ;
              buttonStart.Enabled = true;
              buttonPause.Enabled = false;
              buttonStop.Enabled = false;
      
            }

            //显示当前的秒
            this.pictureBoxSecond1.Image=GetResourceImage((second/100).ToString());
            this.pictureBoxSecond2.Image=GetResourceImage((second%100/10).ToString());
            this.pictureBoxSecond3.Image = GetResourceImage((second % 10).ToString());
            //显示当前的分
            this.pictureBoxMinute1.Image=GetResourceImage((minute /10).ToString());
            this.pictureBoxMinute2.Image=GetResourceImage((minute%10).ToString());
            //显示当前的小时
            this.pictureBoxHour1.Image=GetResourceImage((hour/10).ToString());
            this.pictureBoxHour2.Image=GetResourceImage((hour%10).ToString());

        
        }

        private void buttonStart_Click(object sender, EventArgs e)
        {
            _nowSecond =Convert.ToInt32(textBoxResult.Text)*10;
            timer1.Enabled = true;
            timer2.Enabled = true;
            buttonStart.Enabled = false;
            buttonPause.Enabled = true;
            buttonStop.Enabled = true;
        
        }

        private void buttonPause_Click(object sender, EventArgs e)
        {
             if(buttonPause.Text=="暂停")
          {
            timer1.Enabled = false;
            timer2.Enabled = false;
            //改变按钮文字
            buttonPause.Text = "继续";
            buttonStop.Enabled = true;
           }
        else 
        {
        timer1.Enabled = true;
        timer2.Enabled = true;
        buttonPause.Text = "暂停";   
        }
        
        }

        private void buttonStop_Click(object sender, EventArgs e)
        {
              timer1.Enabled = false;
            timer2.Enabled = false;
            _nowSecond = 0;
            buttonStart.Enabled = true;
            buttonPause.Enabled = false;
            buttonStop.Enabled = false;
        
        }

        private void timer2_Tick(object sender, EventArgs e)
        {
             if (_colonFlag == true)
            {
                pictureBoxColon1.Image = GetResourceImage("");
                pictureBoxColon2.Image = GetResourceImage("");
                _colonFlag = false;

            }
            else
            {
                pictureBoxColon1.Image = GetResourceImage(":");
                pictureBoxColon2.Image = GetResourceImage(":");
                _colonFlag = true;
            }   
        
        }

        private void Form1_Move(object sender, EventArgs e)
        {
            //判断窗口是否能靠近屏幕左侧
            if(Math.Abs(this.Left-0)<=100)
            this.Left=0;
            //判断窗口足够靠近屏幕右侧
            if(Math.Abs (this.Right -Screen .PrimaryScreen .Bounds .Width )<=100)
                this.Left  =Screen .PrimaryScreen .Bounds .Width -this.Width ;
            //判断窗口是否能靠近屏幕上侧
            if(Math.Abs(this.Top-0)<=100)
            this.Top =0;
            //判断窗口足够靠近屏幕下侧
            if(Math.Abs (this.Bottom  -Screen .PrimaryScreen .Bounds.Height )<=100)
                this.Top  =Screen .PrimaryScreen .Bounds .Height   -this.Height  ;
        
        }

    

      
    }
}