c#小程序时钟源码.doc

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Text;using System.Windows.Forms;namespace 时钟 public partial class Form1 : Form /指?针?坐?标 private static float hour_x = 0, hour_y = 0; private static float minute_x = 0, minute_y = 0; private static float second_x = 0, second_y = 0; private float radii = 200; /将?角?度转a成弧?度 2 * 3.1415926 / 360 = 0.01745329 const float radian = 0.01745329F; public Form1() InitializeComponent(); /指?定当窗口大小?改?变?时重?绘?整?个?窗口 this.SetStyle(ControlStyles.ResizeRedraw, true); private void Form1_Load(object sender, EventArgs e) /创建定时器对?象 Timer timer = new Timer(); /启?动定时器 timer.Start(); /设定定时器事?件t的?触发函数y timer.Tick += new EventHandler(TickEvent); /设定定时器的?间?隔?时间?为a 1000 毫秒? timer.Interval = 1000; protected override void OnPaint(PaintEventArgs e) base.OnPaint(e); /创建画-刷，?并设定画-刷的?颜?色? SolidBrush brush = new SolidBrush(Color.FromArgb(255, 0, 255); Pen pen = new Pen(Color.Black); /得?到?窗口长宽两?边?最?短的?一?边?,作为a圆2的?外a切D矩?形?的?边?长 radii = this.ClientRectangle.Width this.ClientRectangle.Height ? this.ClientRectangle.Width : this.ClientRectangle.Height; radii -= 10; /把?窗口的?原-点?移?到?新?坐?标 e.Graphics.TranslateTransform(this.ClientRectangle.Width / 2 - radii / 2, this.ClientRectangle.Height / 2 - radii / 2); /画-圆2 e.Graphics.DrawEllipse(pen, 0, 0, radii, radii); /时钟刻度坐?标 float x = 0.00F, y = 0.00F; /画-出?时钟的?刻度 for (float i = 0.00F; i 12 ? DateTime.Now.Hour - 12 : DateTime.Now.Hour; hour_x = (float)(radii2 - 70) * (float)Math.Sin(hour * 30 + DateTime.Now.Minute * (30f / 60f) * radian); hour_y = (float)(radii2 - 70) * (float)Math.Cos(hour * 30 + DateTime.Now.Minute * (30f / 60f) * radian); pen.Color = Color.FromArgb(0, 255, 0); g.DrawLine(pen, 0, 0, hour_x, -hour_y); /画-出?分?针? minute_x = (float)(radii2-30) * (float)Math.Sin(DateTime.Now.Minute * 6 * radian); minute_y = (float)(radii2-30) * (float)Math.Cos(DateTime.Now.Minute * 6 * radian); pen.Color = Color.FromArgb(0, 0, 255); g.DrawLine(pen, 0, 0, minute_x, -minute_y); /画-出?秒?针? second_x = (float)(radii2-8) * (float)Math.Sin(DateTime.Now.Second * 6 * radian); second_y = (float)(radii2-8) * (float)Math.Cos(DateTime.Now.Second * 6 * radian); pen.Color = Color.FromArgb(0, 255, 255); g.DrawLine(pen, 0, 0, second_x