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  • C#实现的GDI+时钟

    using System;
    002using System.Data;
    003using System.Drawing;
    004using System.Drawing.Drawing2D;
    005class Clock
    006{
    007        private Point mickeyMouse = new Point(0, 0);
    008        private void Form1_Paint(object sender, PaintEventArgs e)
    009        {
    010            DrawClock(e.Graphics);
    011            timer1.Start();
    012        }
    013 
    014        private void DrawClock(Graphics g)
    015        {
    016            ///centre(120, 130);
    017            Rectangle outRect = new Rectangle(0, 0, 240, 260);
    018            Rectangle midRect = new Rectangle(7, 7, 226, 246);
    019            Rectangle inRect = new Rectangle(10, 10, 220, 240);
    020  
    021            LinearGradientBrush outlBlueBrush = new LinearGradientBrush(outRect, Color.FromA#000064,
    022                Color.FromA#0000ff, LinearGradientMode.BackwardDiagonal);
    023            LinearGradientBrush midlBlueBrush = new LinearGradientBrush(midRect, Color.FromA#0000ff,
    024                Color.FromA#000064, LinearGradientMode.BackwardDiagonal);
    025            LinearGradientBrush inlBlueBrush = new LinearGradientBrush(inRect, Color.FromA#000064,
    026               Color.FromA#0000ff, LinearGradientMode.BackwardDiagonal);
    027  
    028            g.FillEllipse(outlBlueBrush, outRect);
    029            g.FillEllipse(midlBlueBrush, midRect);
    030            g.FillEllipse(inlBlueBrush, inRect);
    031            outlBlueBrush.Dispose();
    032            midlBlueBrush.Dispose();
    033            inlBlueBrush.Dispose();
    034            Font myFont = new Font("Arial", 20, FontStyle.Bold);
    035            SolidBrush whiteBrush = new SolidBrush(Color.White);
    036            g.DrawString("12", myFont, whiteBrush, 100, 10);
    037            g.DrawString("6", myFont, whiteBrush, 110, 223);
    038            g.DrawString("3", myFont, whiteBrush, 210, 120);
    039            g.DrawString("9", myFont, whiteBrush, 10, 120);
    040            g.DrawString("1", myFont, whiteBrush, 160, 26);
    041            g.DrawString("2", myFont, whiteBrush, 194, 64);
    042            g.DrawString("5", myFont, whiteBrush, 156, 210);
    043            g.DrawString("4", myFont, whiteBrush, 192, 174);
    044            g.DrawString("11", myFont, whiteBrush, 55, 28);
    045            g.DrawString("10", myFont, whiteBrush, 22, 66);
    046            g.DrawString("7", myFont, whiteBrush, 64, 210);
    047            g.DrawString("8", myFont, whiteBrush, 28, 174);
    048            myFont.Dispose();
    049            whiteBrush.Dispose();
    050            //DateTime;
    051            g.TranslateTransform(120, 130, MatrixOrder.Append);
    052            Pen hourPen = new Pen(Color.White, 6);
    053            hourPen.SetLineCap(LineCap.RoundAnchor, LineCap.ArrowAnchor, DashCap.Flat);
    054            Pen minutePen = new Pen(Color.White, 4);
    055            minutePen.SetLineCap(LineCap.RoundAnchor, LineCap.ArrowAnchor, DashCap.Flat);
    056            Pen secondPen = new Pen(Color.Red, 2);
    057            int sec = DateTime.Now.Second;
    058            int min = DateTime.Now.Minute;
    059            int hour = DateTime.Now.Hour;
    060            double secondAngle = 2.0 * Math.PI * sec / 60.0;
    061            double minuteAngle = 2.0 * Math.PI * (min + sec / 60.0) / 60.0;
    062            double hourAngle = 2.0 * Math.PI * (hour + min / 60.0) / 12.0;
    063            Point centre = new Point(0, 0);
    064            Point hourHand = new Point((int)(40 * Math.Sin(hourAngle)),
    065            (int)(-40 * Math.Cos(hourAngle)));
    066            g.DrawLine(hourPen, centre, hourHand);
    067  
    068            Point minHand = new Point((int)(80 * Math.Sin(minuteAngle)),
    069            (int)(-80 * Math.Cos(minuteAngle)));
    070            g.DrawLine(minutePen, centre, minHand);
    071  
    072            Point secHand = new Point((int)(80 * Math.Sin(secondAngle)),
    073            (int)(-80 * Math.Cos(secondAngle)));
    074            g.DrawLine(secondPen, centre, secHand);
    075  
    076            hourPen.Dispose();
    077            minutePen.Dispose();
    078            secondPen.Dispose();
    079        }
    080        private void timer1_Tick(object sender, EventArgs e)
    081        {
    082            this.Invalidate();             
    083        }
    084        private void hideToolStripMenuItem_Click(object sender, EventArgs e)
    085        {
    086            if (contextMenuStrip1.Items[0].ToString() == "Hide")
    087            {
    088                this.Hide();
    089                contextMenuStrip1.Items[0].Text = "Show";
    090                return;
    091            }
    092  
    093            if (contextMenuStrip1.Items[0].ToString() == "Show")
    094            {
    095                this.Show();
    096                contextMenuStrip1.Items[0].Text = "Hide";
    097                return;
    098            }
    099        }
    100        private void Form1_MouseDown(object sender, MouseEventArgs e)
    101        {
    102            mickeyMouse = new Point(-e.X, -e.Y);
    103        }
    104        private void Form1_MouseMove(object sender, MouseEventArgs e)
    105        {
    106            if (e.Button == MouseButtons.Left)
    107            {
    108                Point mousePos = Control.MousePosition;
    109                mousePos.Offset(mickeyMouse.X, mickeyMouse.Y);
    110                Location = mousePos;
    111            }
    112        }
    113        private void notifyIcon1_DoubleClick(object sender, EventArgs e)
    114        {
    115            if (contextMenuStrip1.Items[0].ToString() == "Show")
    116            {
    117                this.Show();
    118                contextMenuStrip1.Items[0].Text = "Hide";
    119                return;
    120            }
    121        }
    122}
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  • 原文地址:https://www.cnblogs.com/shihao/p/2331447.html
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